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Cisco

Exam 200-125
CCNA Cisco Certified Network Associate CCNA (v3.0)
Version: 6.0

[ Total Questions: 401 ]

Topic break down

Topic

No. of Questions

Topic 1: Network Fundamentals

27

Topic 2: LAN Switching Technologies

60

Topic 3: Routing Technologies

75

Topic 4: WAN Technologies

27

Topic 5: Infrastructure Services

71

Topic 6: Infrastructure Security

18

Topic 7: Infrastructure Management

37

Topic 8: Mixed Questions

86

2

Topic 1, Network Fundamentals

Question No : 1 - (Topic 1)
Where does routing occur within the DoD TCP/IP reference model?
A. application
B. internet
C. network
D. transport
Answer: B
Explanation:
The picture below shows the comparison between TCP/IP model & OSI model. Notice that
the Internet Layer of TCP/IP is equivalent to the Network Layer which is responsible for
routing decision.

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Question No : 2 - (Topic 1)
Which of the following statements describe the network shown in the graphic? (Choose
two.)

A. There are two broadcast domains in the network.
B. There are four broadcast domains in the network.
C. There are six broadcast domains in the network.
D. There are four collision domains in the network.
E. There are five collision domains in the network.
F. There are seven collision domains in the network.
Answer: A,F
Explanation:
Only router can break up broadcast domains so in the exhibit there are 2 broadcast
domains: from e0 interface to the left is a broadcast domain and from e1 interface to the
right is another broadcast domain ->.
Both router and switch can break up collision domains so there is only 1 collision domain
on the left of the router (because hub doesn’t break up collision domain) and there are 6
collision domains on the right of the router (1 collision domain from e1 interface to the
switch + 5 collision domains for 5 PCs in Production) ->.

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Question No : 3 - (Topic 1)
A network interface port has collision detection and carrier sensing enabled on a shared
twisted pair network. From this statement, what is known about the network interface port?
A. This is a 10 Mb/s switch port.
B. This is a 100 Mb/s switch port.
C. This is an Ethernet port operating at half duplex.
D. This is an Ethernet port operating at full duplex.
E. This is a port on a network interface card in a PC.
Answer: C
Explanation:
Modern Ethernet networks built with switches and full-duplex connections no longer utilize
CSMA/CD. CSMA/CD is only used in obsolete shared media Ethernet (which uses repeater
or hub).

Question No : 4 - (Topic 1)
Host 1 is trying to communicate with Host 2. The e0 interface on Router C is down.

Which of the following are true? (Choose two.)
A. Router C will use ICMP to inform Host 1 that Host 2 cannot be reached.
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B. Router C will use ICMP to inform Router B that Host 2 cannot be reached.
C. Router C will use ICMP to inform Host 1, Router A, and Router B that Host 2 cannot be
reached.
D. Router C will send a Destination Unreachable message type.
E. Router C will send a Router Selection message type.
F. Router C will send a Source Quench message type.
Answer: A,D
Explanation:
Host 1 is trying to communicate with Host 2. The e0 interface on Router C is down. Router
C will send ICMP packets to inform Host 1 that Host 2 cannot be reached.

Question No : 5 - (Topic 1)
Refer to the exhibit.

Based on the information given, which switch will be elected root bridge and why?
A. Switch A, because it has the lowest MAC address
B. Switch A, because it is the most centrally located switch
C. Switch B, because it has the highest MAC address
D. Switch C, because it is the most centrally located switch
E. Switch C, because it has the lowest priority
F. Switch D, because it has the highest priority
Answer: E
Explanation:

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To elect the root bridge in the LAN, first check the priority value. The switch having the
lowest priority will win the election process. If Priority Value is the same then it checks the
MAC Address; the switch having the lowest MAC Address will become the root bridge. In
this case, switch C has the lowest MAC Address so it becomes the root bridge.

Question No : 6 - (Topic 1)
Which layer in the OSI reference model is responsible for determining the availability of the
receiving program and checking to see if enough resources exist for that communication?
A. transport
B. network
C. presentation
D. session
E. application
Answer: E
Explanation:
This question is to examine the OSI reference model.
The Application layer is responsible for identifying and establishing the availability of the
intended communication partner and determining whether sufficient resources for the
intended communication exist.

Question No : 7 - (Topic 1)
Refer to the graphic.

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If a packet has a hop count of 15. IP headers contain a Time to Live (TTL) value. 2. The router checks the packet for MAC-layer errors. Local devices address packets to the router's MAC address in the MAC header. the router discards the packet. Check the incoming packet for corruption. After receiving the packets. the router must perform the following steps: 1. routers can look further into the packet to discover the network for which a packet is destined. What will be the source MAC address of the frames received by Host A from the server? A. the MAC address of router interface e0 B. By default. For example. IPX headers contain a hop count. and remove the MAC header. the MAC address of host A Answer: A Explanation: Whereas switches can only examine and forward packets based on the contents of the MAC header. 8 . These network-layer headers contain source and destination network addresses.Host A is communicating with the server. Examine the age of the packet. The router must ensure that the packet has not come too far to be forwarded. the MAC address of router interface e1 C. 15 hops is the maximum number of hops (or routers) that a packet can cross. the MAC address of the server network interface D. Routers make forwarding decisions based on the packet's networklayer header (such as an IPX header or IP header). The router then strips off the MAC header and examines the network-layer header to determine what to do with the packet.

the router builds a new MAC header for the packet. which increments as the packet is forwarded through each router. B. (If you want to read the IP routing tables on a Windows 95/98 workstation. 3. the router discards the packet.(Topic 1) A router has two Fast Ethernet interfaces and needs to connect to four VLANs in the local network. Add a second router to handle the VLAN traffic. Implement a router-on-a-stick configuration. C. the IP TTL value decrements as the IP packet is forwarded through each router.) 4. How can you accomplish this task. Answer: D Explanation: A router on a stick allows you to use sub-interfaces to create multiple logical networks on a single physical interface. Add two more Fast Ethernet interfaces.(Topic 1) 9 . Use a hub to connect the four VLANS with a Fast Ethernet interface on the router. and the distance to those networks. D. After determining which direction to forward the packet. Build the new MAC header and forward the packet. the router must build a new header.Unlike the IPX hop count. the direction to the desired network (the outgoing interface number). Finally. Question No : 9 DRAG DROP . A router cannot decrement the TTL value to 1 and then forward the packet. The MAC header includes the router's MAC address and the final destination's MAC address or the MAC address of the next router in the path. Question No : 8 . If an IP packet has a TTL value of 1. Routers maintain a routing table that lists available networks. Determine the route to the destination. using the fewest physical interfaces and without decreasing network performance? A. type ROUTE PRINT in the DOS box.

session D.) Answer: Question No : 10 .Match the terms on the left with the appropriate OSI layer on the right. presentation C. data link 10 . application B. (Not all options are used. internet F. What is the highest layer of the protocol stack that the network administrator is using for this operation? A. transport E.(Topic 1) A network administrator is verifying the configuration of a newly installed host by establishing an FTP connection to a remote server.

(Topic 1) Refer to the exhibit. Not all the names or descriptions will be used.Answer: A Explanation: FTP belongs to Application layer and it is also the highest layer of the OSI model. Complete this network diagram by dragging the correct device name or description to the correct location. Question No : 11 DRAG DROP . Answer: 11 .

(Topic 1) A receiving host computes the checksum on a frame and determines that the frame is damaged. Packets are created when the network layer encapsulates a frame with source and destination host addresses and protocol-related control information. and adds a customized header containing the hardware destination and source address. session B. network D. data link E. C. Question No : 13 . physical Answer: D Explanation: The Data Link layer provides the physical transmission of the data and handles error notification. Protocols Data Unit (PDU) on Datalink layer is called frame.Question No : 12 .) A. The data link layer adds physical source and destination addresses and an FCS to the segment. and flow control. Packets are created when the network layer adds Layer 3 addresses and control information to a segment. transport C. The transport layer divides a data stream into segments and may add reliability and flow control information. network topology. each called a data frame. D. The presentation layer translates bits into voltages for transmission across the physical link.(Topic 1) Which of the following correctly describe steps in the OSI data encapsulation process? (Choose two. E. B. 12 . The Data Link layer formats the message into pieces. At which OSI layer did this happen? A. According to this question the frame is damaged and discarded which will happen at the Data Link layer. The frame is then discarded.

Each segment is assigned a sequence number.(Topic 1) Refer to exhibit: Which two destination addresses will be used by Host A to send data to Host C? (Choose two. and routes the data appropriately. basic flow control is implemented by acknowledgment by the receiver of the receipt of data. Second. First.) 13 . For example. this layer controls the logical addressing of devices. the sender waits for this acknowledgment before sending the next part. the network layer determines the best path to a particular destination network.Answer: A. Question No : 14 .D Explanation: The transport layer segments data into smaller pieces for transport. The Network layer (Layer 3) has two key responsibilities. so that the receiving device can reassemble the data on arrival. The transport layer also use flow control to maximize the transfer rate while minimizing the requirements to retransmit. in TCP.

F Explanation: While transferring data through many different networks. the source and destination IP addresses are not changed. the IP address of the router's E0 interface F. C. B. Only the source and destination MAC addresses are changed. the MAC address of the router's E0 interface Answer: C. a modem converts analog signals from a router to a leased line. A CSU/DSU converts digital signals from a router to a leased line. A CSU/DSU converts analog signals from a router to a phone line. Answer: D Explanation: CSU/DSU is used to convert digital signals from a router to a network circuit such as a T1.A. the IP address of Switch 1 B. while a modem is used to convert digital signals over a regular POTS line.(Topic 1) What is the difference between a CSU/DSU and a modem? A. the IP address of Host C D. When the router receives this data. So in this case Host A will use the IP address of Host C and the MAC address of E0 interface to send data. A CSU/DSU converts digital signals from a router to a phone line. it replaces the source MAC address with its own E1 interface’s MAC address and replaces the destination MAC address with Host C’s MAC address before sending to Host C. D. the MAC address of Switch 1 C. Question No : 15 . 14 . a modem converts analog signals from a router to a phone line. a modem converts digital signals from a router to a phone line. a modem converts digital signals from a router to a leased line. A CSU/DSU converts analog signals from a router to a leased line. the MAC address of Host C E.

A modem modulates outgoing digital signals from a computer or other digital device to analog signals for a conventional copper twisted pair telephone line and demodulates the incoming analog signal and converts it to a digital signal for the digital device. A modem terminates a digital local loop. Answer: A.Question No : 16 .) A.E Explanation: The idea behind a WAN is to be able to connect two DTE networks together through a DCE network. B. A modem terminates an analog local loop. A router is commonly considered a DTE device. A router is commonly considered a DCE device.(Topic 1) Which of the following describes the roles of devices in a WAN? (Choose three. Therefore a modem terminates an analog local loop is correct. 15 . A CSU/DSU terminates an analog local loop. F. A CSU/DSU terminates a digital local loop. C. The network’s DCE device (includes CSU/DSU) provides clocking to the DTEconnected interface (the router’s serial interface). A CSU/DSU is used between two digital lines For more explanation of answer D. in telephony the local loop (also referred to as a subscriber line) is the physical link or circuit that connects from the demarcation point of the customer premises to the edge of the carrier or telecommunications service provider’s network. E. D.D.

PC_1 is sending packets to the FTP server.(Topic 1) Refer to the exhibit. Answer: 16 .Question No : 17 DRAG DROP . Drag the correct frame and packet address to their place in the table. Consider the packets as they leave RouterA interface Fa0/0 towards RouterB.

which entry will be in the ARP cache of HostA to support this transmission? 17 . After HostA pings HostB.(Topic 1) Refer to the exhibit.Question No : 18 .

(Topic 1) 18 .1. Exhibit C D.1.168. Exhibit F Answer: A Explanation: Host A knows host B is in another network so it will send the pings to its default gateway 192. Exhibit A B. Exhibit B C. This information (IP and MAC address of the default gateway) is saved in its ARP cache for later use.A.168. Exhibit E F. Question No : 19 .6.6. Host A sends a broadcast frame asking the MAC address of 192. Exhibit D E.

0. each interface does not require an IP address.255. 19 .255. C. must be a Layer 3 device for the PCs to communicate with each other. With a network wide mask of 255. B.127 & x. With a network wide mask of 255. D.255. E.x.128.255.D.254. If Subnet Mask is 255.x.255.255.x. so the IP Addresses of 2 hosts fall in different subnets so each interface needs an IP an address so that they can communicate each other. With a network wide mask of 255.255.255.255.254.x. each interface does require an IP address on a unique IP subnet.128 the hosts vary from x.E Explanation: If Subnet Mask is 255.x. With a network wide mask of 255.255.255. With a network wide mask of 255. each interface does not require an IP address.0 the 2 specified hosts are in same subnet so are in network address and can be accommodated in same Layer 2 domain and can communicate with each other directly using the Layer 2 address.255. must be a Layer 2 device for the PCs to communicate with each other.0.255.0 the 2 specified hosts fall in different subnets so they need a Layer 3 device to communicate.128x.128.0.x.255. Which three statements correctly describe Network Device A? (Choose three. If Subnet Mask is 255.255.0 . Answer: B.x.) A.x.x.Refer to the exhibit.

when there is a carrier C. when they receive a special token B.(Topic 1) In an Ethernet network. MAC addresses are only used to communicate on the same network. Layer 3 packet also contains physical address ->. to differentiate a Layer 2 frame from a Layer 3 packet D. each frame has the same priority to transmit by default ->. Layer 2 frame and Layer 3 packet can be recognized via headers. to uniquely identify devices at Layer 2 B. they cannot communicate ->. To communicate on different network we have to use Layer 3 addresses (IP addresses) -> B is not correct. On Ethernet. All devices need a physical address to identify itself.) A. If not.(Topic 1) For what two purposes does the Ethernet protocol use physical addresses? (Choose two. to establish a priority system to determine which device gets to transmit first E. when the server grants access 20 .Question No : 20 . under what two scenarios can devices transmit? (Choose two.) A. to allow detection of a remote device when its physical address is unknown Answer: A. to allow communication between different devices on the same network F. when they detect no other devices are sending D.E Explanation: Physical addresses or MAC addresses are used to identify devices at layer 2. to allow communication with devices on a different network C. Question No : 21 . when the medium is idle E.

If a device detects another device is sending.(Topic 1) Refer to the exhibit: What will Router1 do when it receives the data frame shown? (Choose three. it will wait for a specified amount of time before attempting to transmit. C.Answer: C. When there is no traffic detected. After the message is sent.D Explanation: Ethernet network is a shared environment so all devices have the right to access to the medium.1.0c36. Router1 will strip off the destination IP address and replace it with the IP address of 21 .168. the device returns to its default listening mode. the signals collide and cannot reach the destination.6965.0c07. Router1 will strip off the destination MAC address and replace it with the MAC address 0000.40.) A. If more than one device transmits simultaneously. While this transmission is occurring. a device will transmit its message. Question No : 22 . the device continues to listen for traffic or collisions on the LAN. Router1 will strip off the source MAC address and replace it with the MAC address 0000.4320. B. Router1 will strip off the source IP address and replace it with the IP address 192. D.

E. In a properly functioning network with redundant switched paths. Question No : 23 . Answer: B. Switches that are configured with VLANs make forwarding decisions based on both Layer 2 and Layer 3 address information. Router1 will forward the data packet out interface FastEthernet0/2.F Explanation: Remember.C. E.168. Spanning Tree Protocol allows switches to automatically share VLAN information. C. the source and destination MAC changes as each router hop along with the TTL being decremented but the source and destination IP address remain the same from source to destination. Microsegmentation reduces and can even eliminate collisions because each segment is its own collision domain ->.1. Establishing VLANs increases the number of broadcast domains.(Topic 1) Which three statements accurately describe Layer 2 Ethernet switches? (Choose three. All other switches in that broadcast domain will have only one root port. Router1 will forward the data packet out interface FastEthernet0/1.) A. Microsegmentation decreases the number of collisions on the network.40. If a switch receives a frame for an unknown destination. 22 . B. F. Answer: A. Each network device gets the full bandwidth of the segment and does not have to share the segment with other devices.D.E Explanation: Microsegmentation is a network design (functionality) where each workstation or device on a network gets its own dedicated segment (collision domain) to the switch.192. Note: Microsegmentation decreases the number of collisions but it increases the number of collision domains. D. each switched segment will contain one root bridge with all its ports in the forwarding state. it uses ARP to resolve the address. F.

What is the TTL value for that ping? A. For example in the topology above. 255 Answer: B Explanation: From the CCNA ICND2 Exam book: “Routers decrement the TTL by 1 every time they forward a packet.Question No : 24 . the TTL is still remain the same. Host A pings interface S0/0 on router 3. 252 B. This prevents packets from rotating forever.” I want to make it clear that before the router forwards a packet. The picture below shows TTL values for each interface of each router and for Host B. 254 D. if a router decrements the TTL to 0. 23 . 253 C. pings to S0/1 and S0/0 of Router 2 have the same TTL.(Topic 1) Refer to the exhibit. it throws away the packet.

24 .Notice that Host A initializes ICMP packet with a TTL of 255: Question No : 25 .(Topic 1) Refer to the exhibit.

A collision domain is sometimes referred to as an Ethernet segment. The Client is asking for a IP Address. The number of collision domains would increase.What two results would occur if the hub were to be replaced with a switch that is configured with one Ethernet VLAN? (Choose two. Answer: C. this meant you had a lot of collisions. The simple way to look at it is this way: switches break up collision domains. but the client does not know how to reach the DHCP Server. So the client sends a DHCP Discover packet to EVERY PC in the local subnet 25 . The number of collision domains would decrease. Since switches and bridges allow for broadcast traffic to go unswitched. so when a broadcast hits a router (or the perimeter of a VLAN). The number of broadcast domains would increase. a broadcast domain can contain multiple collision domains. it doesn't get forwarded. E. while routers (and VLANs) break up collision domains and broadcast domains. C.D Explanation: Basically. Routers. Collision Domain: A group of Ethernet or Fast Ethernet devices in a CSMA/CD LAN that are connected by repeaters and compete for access on the network. D. broadcasts can traverse collision domains freely. you generally have one collision domain to a PC. a collision domain is a network segment that allows normal network traffic to flow back and forth. since we mostly use switches to connect computers to the network. Broadcast Domain: Broadcasting sends a message to everyone on the local network (subnet). F. The number of broadcast domains would decrease. Also. Only one device in the collision domain may transmit at any one time. you break up collision domains by switching packets bound for other collision domains. and the other devices in the domain listen to the network in order to avoid data collisions. An example for Broadcasting would be DHCP Request from a Client PC. In the old days of hubs. Broadcast domains are exactly what they imply: they are network segments that allow broadcasts to be sent across them. and the old CSMA/CD would be working overtime to try to get those packets re-sent every time there was a collision on the wire (since Ethernet allows only one host to be transmitting at once without there being a traffic jam). The number of broadcast domains would remain the same. The number of collision domains would remain the same. but a collision domain can never have more than one broadcast domain associated with it. however. don't allow broadcasts through by default.) A. B. These days. With switches.

PC_1 is exchanging packets with the FTP server. A Router is used to separate Broadcast-Domains (we could also call them Subnets . 26 . this is ONE Collision Domain. if 5 PCs are connected with separate cables to a switch. But only the DHCP Server will answer to the Request.or call them VLANs).(Broadcast). If this switch is connected to another switch or a router. hub) will reside in ONE single collision domain. Collision Domain: Each connection from a single PC to a Layer 2 switch is ONE Collision domain. we have one collision domain more. Drag the correct frame and packet addresses to their place in the table. we have TWO broadcast domains.(Topic 1) Refer to the exhibit. hub. Consider the packets as they leave RouterB interface Fa0/1 towards RouterA. we have 5 Collision domains. Each device that is connected to a Layer 1 device (repeater. Question No : 26 DRAG DROP . if they are connected with a repeater. if a router stands between all these devices. all these devices are in ONE Broadcast domain (assuming a single VLAN). switch or bridge. If 5 Devices are connected to a Hub. How to count them? Broadcast Domain: No matter how many hosts or devices are connected together. So. For example.

7 Question No : 27 DRAG DROP .3333MAC 0000.(Topic 1) Drag the cable type on the left to the purpose for which it is best suited on the right.21.250IP 172.34.16.16.9999 IP 172.0c89.) Answer: 27 .0c89. (Not all options are used.Answer: Explanation: Source Mac AddressDestination Mac AddressSource IP addressDestination MAC address MAC 0000.

switch to hub. hub to server… and we use crossover cable to connect switch to switch. router to router.To connect two serial interfaces of 2 routers we use serial cable – To specify when we use crossover cable or straight-through cable.Explanation: To remember which type of cable you should use. Switch One device in group 1 + One device in group 2: use straight-through cable Two devices in the same group: use crossover cable For example: we use straight-through cable to connect switch to router. follow these tips: . Server Group 2: Hub.(Topic 2) Refer to the exhibit. LAN Switching Technologies Question No : 28 . host to host…) Topic 2. Host. switch to host. 28 . we should remember: Group 1: Router. hub to host.

255.168.8.255.254 SwitchB(config)# interface vlan 1 SwitchB(config-if)# ip address 192.8. SwitchB(config)# ip default-network 192.0 SwitchB(config-if)# ip default-gateway 192.0 SwitchB(config-if)# no shutdown B.255.0 SwitchB(config)# interface FastEthernet 0/1 SwitchB(config-if)# ip address 192.8.255.255.255. SwitchB(config)# ip route 192.168.8.252 255.0 SwitchB(config-if)# no shutdown C.8.168.0 SwitchB(config-if)# no shutdown Answer: C Explanation: To remote access to SwitchB.8.252 255.168.254 SwitchB(config)# interface vlan 1 SwitchB(config-if)# ip address 192. Which set of commands is required to accomplish this task? A.168.168.8. SwitchB(config)# interface FastEthernet 0/1 SwitchB(config-if)# ip address 192. SwitchB(config)# interface vlan 1 SwitchB(config-if)# ip address 192.254 255.A technician has installed SwitchB and needs to configure it for remote access from the management workstation connected to SwitchA.168.8.252 255.168.255.255.255.0 SwitchB(config-if)# no shutdown E.8.255.252 255.0 SwitchB(config-if)# no shutdown D.255.255. SwitchB(config)# ip default-gateway 192. it must have a management IP address on a VLAN on that 29 .255.255.168.252 255.254 255.

More collision domains will be created. IP address utilization will be more efficient. not to forward traffic sent by devices connected to the switch. Question No : 29 . Since this is a full duplex switch. B. we often use VLAN 1 as the management VLAN (but in fact it is not secure).(Topic 2) A switch is configured with all ports assigned to VLAN 2 with full duplex FastEthernet to segment existing departmental traffic. More bandwidth will be required than was needed previously. 30 . C. each port is a separate collision domain. In the exhibit. D. Question No : 30 .switch.(Topic 2) Refer to the exhibit. What is the effect of adding switch ports to a new VLAN on the switch? A. Answer: D Explanation: Each VLAN creates its own broadcast domain. we can recognize that the Management Workstation is in a different subnet from the SwitchB. Traditionally. This default gateway is used to forward traffic originating from the switch only. you must configure at least one default gateway. An additional broadcast domain will be created. For intersubnetwork communication to occur.

or moved to another port on the same switch or a different switch. switch sends broadcast to all ports except the source to find out the destination host. This could cause confusion in frame forwarding.Switch-1 needs to send data to a host with a MAC address of 00b0. 31 . Answer: B Explanation: This question tests the operating principles of the Layer 2 switch. The MAC address entry is automatically discarded or aged out after 300 seconds If there is not MAC address of destination host in MAC table. turned off. Switch-1 will flood the data out all of its ports except the port from which the data originated. Switch1 will flood the data out all of its ports except the port from which the data originated to determine which port the host is located in. Switch-1 will drop the data because it does not have an entry for that MAC address. C. Switch-1 will forward the data to its default gateway. Switches work as follows: Switches learn the MAC addresses of PCs or workstations that are connected to their switch ports by examining the source address of frames that are received on that port. Switch-1 will send an ARP request out all its ports except the port from which the data originated. D. Machines may have been removed from a port.efa4.d056. Check the MAC address table of Switch1 and find that the MAC address of the host does not exist in the table. B. What will Switch-1 do with this data? A.

D. spanning-tree mode mst Answer: B Explanation: 32 . spanning-tree mode rapid-pvst C. When a packet is received from an 802.1Q trunk. Question No : 31 .In output there is no MAC address of give host so switch floods to all ports except the source port. C.(Topic 2) Which statement about VLAN operation on Cisco Catalyst switches is true? A. so incoming frames with unknown destinations are only transmitted to ports that reside in the same VLAN as the incoming frame. the VLAN ID can be determined from the source MAC address and the MAC address table. spanning-tree uplinkfast B.(Topic 2) Which command enables RSTP on a switch? A. Question No : 32 . Answer: B Explanation: Each VLAN resides in its own broadcast domain. Ports between switches should be configured in access mode so that VLANs can span across the ports. Unknown unicast frames are retransmitted only to the ports that belong to the same VLAN. spanning-tree backbonefast D. Broadcast and multicast frames are retransmitted to ports that are configured on different VLAN. B.

root 33 . Fa0/2.1D protocol. SwitchA. Which three of these show the correct RSTP port roles for the indicated switches and interfaces? (Choose three. To activate the Rapid-PVST+ protocol: switch(config)#spanning-tree mode rapid-pvst Question No : 33 . called Rapid-PVST+. The RSTP 802.(Topic 2) Refer to the exhibit. designated B. Each of these four switches has been configured with a hostname.) A. No other configuration changes have been made.1w protocol is an IEEE open implementation.Rapid Spanning Tree Protocol (RSTP) is an enhancement of the original STP 802. Fa0/1. as well as being configured to run RSTP. SwitchA. that includes the benefits of its Per-VLAN spanning tree protocols. Cisco has its own proprietary implementation of RSTP.

The receiving switch will add its local port cost value to the cost in the BPDU. This can be calculated from the “cost to the root bridge” of each switch because a switch always advertises its cost to the root bridge in its BPDU. Because SwitchC is the root bridge so the 2 ports nearest SwitchC on SwitchA (Fa0/1) and SwitchD (Gi0/2) will be root ports. Below are the cost values you should memorize: SwitchB will choose the interface with lower cost to the root bridge as the root port so we must calculate the cost on interface Gi0/1 & Gi0/2 of SwitchB to the root bridge. SwitchC. designated E. One more thing to notice is that a root bridge always advertises the cost to the root bridge (itself) with an initial value of 0. Switch C has lowest MAC address so it will become root bridge and 2 of its ports (Fa0/1 & Fa0/2) will be designated ports.C. root D. root F.B. the lower the value of its cost. “cost” is calculated based on bandwidth of the link. root Answer: A. The higher the bandwidth on a link. Fa0/2. SwitchD. SwitchB. In general. SwitchB. Gi0/2. Gi0/2.F Explanation: The question says “no other configuration changes have been made” so we can understand these switches have the same bridge priority. Gi0/1. Now we come to the most difficult part of this question: SwitchB must have a root port so which port will it choose? To answer this question we need to know about STP cost and port cost. Now let’s have a look at the topology again 34 .

Below summaries all the port roles of these switches: 35 .SwitchC advertises its cost to the root bridge with a value of 0. It is rather easy as the MAC address of SwitchA is lower than that of SwitchB so Fa0/2 of SwitchA will be designated port while Gi0/2 of SwitchB will be alternative port. The same process happens for SwitchA and SwitchB learns that it can reach SwitchC via Gi0/2 with a total cost of 23 -> Switch B chooses Gi0/1 as its root port ->. SwitchB adds another 4 and learns that it can reach SwitchC via Gi0/1 port with a total cost of 8. Now our last task is to identify the port roles of the ports between SwitchA & SwitchB. Switch D adds 4 (the cost value of 1Gbps link) and advertises this value (4) to SwitchB.

+ DP: Designated Port (forwarding state) + RP: Root Port (forwarding state) + AP: Alternative Port (blocking state) Question No : 34 . listening C. discarding D. learning B. 36 . forwarding Answer: C Explanation: PVST+ is based on IEEE802.(Topic 2) Which port state is introduced by Rapid-PVST? A. listening.1D Spanning Tree Protocol (STP). learning and forwarding) while STP has 5 port states (blocking. But PVST+ has only 3 port states (discarding.

native VLAN mismatches D. So discarding is a new port state in PVST+. What causes this behavior? A. trunk mode mismatches B. VLANs that do not correspond to a unique IP subnet 37 . A frame on VLAN 1 on switch S1 is sent to switch S2 where the frame is received on VLAN 2.learning.(Topic 2) Refer to the exhibit. forwarding and disabled). Question No : 35 . allowing only VLAN 2 on the destination C.

Question No : 36 . In this case.Answer: C Explanation: Untagged frames are encapsulated with the native VLAN. Which switch provides the spanning-tree designated port role for the network segment that services the printers? A. Switch1 B.(Topic 2) Refer to the exhibit. Switch2 C. Switch3 D. Switch4 Answer: C Explanation: 38 . the native VLANs are different so although S1 will tag it as VLAN 1 it will be received by S2.

(Topic 2) Refer to the exhibit. if switches A (MAC=0200.Printers are connected by hubs.0000.0000.2222) both have a priority of 32768 then switch A will be selected as the root bridge. Compare their MAC addresses. 32768: 11-22-33-44-55-66 B. the priority is compared first. Decide the switch that provides the spanning-tree designated port role between Switch3 and Switch4. To compare two bridge IDs.(Topic 2) Which switch would STP choose to become the root bridge in the selection process? A..will become the target of being the root. 32768: 22-33-44-55-66-77 C. 32769: 11-22-33-44-55-65 D. Switch3 with a smaller MAC address will provide a designated port for printers.. Question No : 38 .Bridge priority + MAC (32768. 32769: 22-33-44-55-66-78 Answer: A Explanation: The root bridge of the spanning tree is the bridge with the smallest (lowest) bridge ID.0200. 32768: 11-22-33-44-55-66 would be the bridge because it has a lower priority and MAC address. In this case. the bridge ID contains both numbers combined together . Each bridge has a configurable priority number and a MAC Address. They have the same priority 32768. for example.1111). as if looking at a real number anything less than 32768. 39 .0000.1111) and B (MAC=0200. The Bridge priority default is 32768 and can only be configured in multiples of 4096(Spanning tree uses the 12 bits extended system ID). If two bridges have equal priority then the MAC addresses are compared. Question No : 37 .

It is running RSTP while the elected root bridge is running 802. which is higher than the roots priority of 20481. An 802. It has a higher bridge ID than the elected root bridge.1Q trunk is configured between the two switches.(Topic 2) Cisco Catalyst switches CAT1 and CAT2 have a connection between them using ports FA0/13. What will happen in this scenario? A. B. It has a higher MAC address than the elected root bridge. VLAN 10 on CAT1 and VLAN 1 on CAT2 will send untagged frames. and this switch has a bridge ID priority of 32768. but on CAT2 the native VLAN is not specified. It has more than one interface that is connected to the root network segment. Question No : 39 . B.Why has this switch not been elected the root bridge for VLAN1? A. 40 .1d spanning tree. D. 802. On CAT1. VLAN 10 is chosen as native. C.1Q giants frames could saturate the link. Answer: D Explanation: The root bridge is determined by the lowest bridge ID.

VLANs utilize packet filtering to enhance network security. or changing hosts on the network. 41 . E. F. C. Answer: C Explanation: A “native VLAN mismatch” error will appear by CDP if there is a native VLAN mismatch on an 802. “VLAN mismatch” can cause traffic from one vlan to leak into another vlan. VLANs establish broadcast domains in switched networks. because it can better control layer2 broadcast to improve network security. VLANs can greatly simplify adding. VLAN 10 on CAT1 and VLAN 1 on CAT2 will send tagged frames.1Q link. This makes network more flexible and scalable.(Topic 2) Refer to the exhibit. Packet filtering is a function of firewall instead of VLAN. VLANs allow access to network services based on department. D. Answer: A.) A.F Explanation: VLAN technology is often used in practice. moving. Question No : 41 . not physical location.(Topic 2) What are three advantages of VLANs? (Choose three.C. Question No : 40 . VLANs provide a method of conserving IP addresses in large networks. A native VLAN mismatch error message will appear. B. VLANs provide a low-latency internetworking alternative to routed networks. D.E.

The “switchport mode trunk” command is all that is needed. the individual VLANs should not be listed over that trunk interface. The ports only need to be connected by a crossover cable. SwitchX(config)# interface fastethernet 0/1 SwitchX(config-if)# switchport mode trunk C. 42 .How should the FastEthernet0/1 ports on the switches that are shown in the exhibit be configured to allow connectivity between all devices? A. SwitchX(config)# interface fastethernet 0/1 SwitchX(config-if)# switchport mode trunk SwitchX(config-if)# switchport trunk vlan 1 SwitchX(config-if)# switchport trunk vlan 10 SwitchX(config-if)# switchport trunk vlan 20 Answer: B Explanation: IN order for multiple VLANs to cross switches. the connection between the switches must be a trunk. SwitchX(config)# interface fastethernet 0/1 SwitchX(config-if)# switchport mode access SwitchX(config-if)# switchport access vlan 1 D. B.

Question No : 42 .(Topic 2) Why will a switch never learn a broadcast address? A. B. D. A broadcast frame is never forwarded by a switch. Broadcast frames are never sent to switches. Broadcast addresses use an incorrect format for the switching table. Question No : 44 .(Topic 2) What parameter can be different on ports within an EtherChannel? A. trunk encapsulation D. duplex and the trunk encapsulation must be the same on each end. the speed. DTP negotiation settings C. E. speed B. and since a broadcast is never the source. A broadcast address will never be the source address of a frame.(Topic 2) 43 . Answer: C Explanation: Switches dynamically learn MAC addresses based on the source MAC addresses that it sees. C. Broadcasts only use network layer addressing. Question No : 43 . duplex Answer: B Explanation: For an etherchannel to come up. it will never learn the broadcast address.

Answer: C Explanation: In order to pass traffic from VLANs on different switches. but none of the hosts connected to SwitchA can communicate with hosts in the same VLAN connected to SwitchB. VTP is not configured to carry VLAN information between the switches.Refer to the exhibit. The link between the switches is configured in the wrong VLAN. what is the most likely problem? A. B. 44 . Switch IP addresses must be configured in order for traffic to be forwarded between the switches. The link between the switches needs to be configured as a trunk. E. D. All switch ports are assigned to the correct VLANs. C. The access link needs to be configured in multiple VLANs. Based on the output shown. the connections between the switches must be configured as trunk ports.

Answer: B Explanation: In order for hosts in the same VLAN to communicate with each other over multiple switches. E. A technician is troubleshooting host connectivity issues on the switches. D. those switches need to be configured as trunks on their connected interfaces so 45 . A router is required for hosts on SW11 in VLANs 10 and 15 to communicate with hosts in the same VLAN on Sw12. At least one port needs to be configured in VLAN 1 for VLANs 10 and 15 to be able to communicate. The link connecting the switches has not been configured as a trunk. Hosts in the Admin VLAN are able to communicate. The port-to-VLAN assignments are identical on the two switches.Question No : 45 . Port FastEthernet 0/1 needs to be configured as an access link on both switches.(Topic 2) Refer to the exhibit. The Fa0/1 port is not operational on one of the switches. B. The hosts in VLANs 10 and 15 on Sw11 are unable to communicate with hosts in the same VLANs on Sw12. What could be the problem? A. C.

port priority number and MAC address Answer: A Explanation: The path cost to the root bridge is the most important value to determine which port will become the root port on each non-root switch. the port with lowest cost to the root bridge will become root port (on non-root switch). lowest port MAC address C. highest port priority number E. Question No : 47 . 46 . Question No : 46 . path cost B.(Topic 2) What value is primarily used to determine which port becomes the root port on each nonroot switch in a spanning-tree topology? A.(Topic 2) Refer to the exhibit. In particular.that they can pass traffic from multiple VLANs. VTP revision number D.

D. B. The bridge priority is lower than the default value for spanning tree. C. The command “show spanning-tree vlan 30 only shows us information about VLAN 30. E. we see that all ports are in designated role (forwarding state). All interfaces that are shown are on shared media. The only thing we can specify is this switch is the root bridge for VLAN 3o but we cannot guarantee it is also the root bridge for other VLANs.) A. Answer: A. learning. which means Point-topoint environment – not a shared media.E Explanation: From the output. F. or forwarding.The output that is shown is generated at a switch. Thirty VLANs have been configured on this switch. Which three statements are true? (Choose three. We don’t know how many VLAN exists in this switch ->. 47 . All designated ports are in a forwarding state. The bridge priority of this switch is 24606 which is lower than the default value bridge priority 32768. All three interfaces on this switch have the connection type “p2p”. This switch must be the root bridge for all VLANs on this switch.C. All ports will be in a state of discarding.

most network engineers prefer to use 802. 48 . It is a trunking protocol capable of carrying untagged frames.1Q protocol. and thus requires that the FCS be recomputed. D. 802.1Q frame relay supports two types of frame: marked and non-marked.D Explanation: Cisco switches can use two different encapsulation types for trunks.3 frame header. mainly stipulates the realization of the VLAN. 802.(Topic 2) Which two of these are characteristics of the 802. or Virtual Bridged Local Area Networks protocol. Question No : 49 . E.1q since it is standards based and will interoperate with other vendors.1Q is a standardized relay method that inserts 4 bytes field into the original Ethernet frame and re-calculate the FCS. Answer: B.1q C.1q or the Cisco proprietary ISL. It is a Layer 2 messaging protocol which maintains VLAN configurations across networks. 802.E Explanation: 802. Generally.1Q protocol? (Choose two. the industry standard 802.) A. B.Question No : 48 . It includes an 8-bit field which specifies the priority of a frame. C. 802. Non-marked frame carries no VLAN identification information. IGP D.3u Answer: B. It is used exclusively for tagging VLAN frames and does not address network reconvergence following switched network topology changes.) A. ISL E.(Topic 2) Which two link protocols are used to carry multiple VLANs over a single link? (Choose two. It modifies the 802. VTP B.

The adjacent port must be configured manually as a trunk port to establish a trunk link. on D. The port becomes a trunk port if the adjacent port is set to on. OFF: This mode puts the port into permanent non-trunk mode and negotiates to convert the link into a non-trunk link. transparent B. Question No : 51 . desirable E.C. This is the default mode for Fast and Gigabit Ethernet ports.D Explanation: These are the different types of trunk modes: ON: This mode puts the port into permanent trunk mode and negotiates to convert the link into a trunk link. client F. Desirable: This mode causes the port to actively attempt to convert the link into a trunk link.(Topic 2) Refer to the exhibit. The port becomes a non-trunk port even if the adjacent port does not agree to the change.Question No : 50 . desirable. auto C. 49 . forwarding Answer: B. but does not allow the port to generate Dynamic Trunking Protocol (DTP) frames.(Topic 2) What are the possible trunking modes for a switch port? (Choose three.) A. The port becomes a trunk port even if the adjacent port does not agree to the change. The port becomes a trunk port if the adjacent port is set to on or desirable mode. Auto: This mode enables the port to convert the link into a trunk link. Nonegotiate: This mode puts the port into permanent trunk mode. or auto mode.

E. Host E and host F use the same IP gateway address.) A.1q or ISL. for any trunk to be formed. Answer: D. so each one must be configured for 802. Also. Router1 needs more LAN interfaces to accommodate the VLANs that are shown in the exhibit. The FastEthernet 0/0 interface on Router1 and the FastEthernet 0/1 interface on Switch2 trunk ports must be configured using the same encapsulation type. This is known as the router on a stick configuration. subinterfaces must be used.F Explanation: In order for multiple VLANs to connect to a single physical interface on a Cisco router.(Topic 2) 50 . Router1 and Switch2 should be connected via a crossover cable. The FastEthernet 0/0 interface on Router1 must be configured with subinterfaces. both ends of the trunk must agree on the encapsulation type.Which two statements are true about interVLAN routing in the topology that is shown in the exhibit? (Choose two. Question No : 52 . F. D. one for each VLAN. B. C. Router1 will not play a role in communications between host A and host D.

Switch4. In this specific case.Refer to the exhibit. port Gi0/1 F. which access layer switch port will assume the discarding role? A. the answer is based on the BPDUs it receives from Switch3. port fa0/1 B. But how does Switch4 select its blocked port? Well. port Gi0/2 Answer: C Explanation: In this question. port fa0/11 D. A lower Root Bridge ID 2. Switch3. port fa0/12 C. all the BPDUs sent by 51 . Switch4 will need to block one of its ports to avoid a bridging loop between the two switches. A lower Sending Bridge ID 4. Switch 3 has a lower bridge ID than Switch 4 (because the MAC of Switch3 is smaller than that of Switch4) so both ports of Switch3 will be in forwarding state. A BPDU is superior to another if it has: 1. Switch4. Switch3. A lower path cost to the Root 3. The alternative port will surely belong to Switch4. A lower Sending Port ID These four parameters are examined in order. Switch3. we only care about the Access Layer switches (Switch3 & 4). Switch3. At the end of an RSTP election process. port fa0/2 E.

the same path cost to the Root and the same Sending Bridge ID. which are unique to each port on the switch. “LMI enq sent…” 52 . HDLC C. Question No : 53 . PPP Answer: C Explanation: This question is to examine the show int command. According to the information provided in the exhibit. In this case the port priorities are equal because they use the default value. so Switch4 will compare port index values. we can know that the data link protocol used in this network is the Frame Relay protocol. Switch4 will select the port connected with Fa0/1 (of Switch3) as its root port and block the other port -> Port fa0/11 of Switch4 will be blocked (discarding role). and because Fa0/12 is inferior to Fa0/1. ATM B. Which WAN protocol is being used? A.Switch3 have the same Root Bridge ID.(Topic 2) Refer to the exhibit. The only parameter left to select the best one is the Sending Port ID (Port ID = port priority + port index). Frame Relay D.

(Topic 2) Refer to the exhibit. VLANs have not been created yet. Based on the output shown. Switch port FastEthernet 0/24 on ALSwitch1 will be used to create an IEEE 802. what is the reason the trunk does not form.1Qcompliant trunk to another switch.Question No : 54 . even though the proper cabling has been attached? A. 53 .

The “no shutdown” command has not been entered for the port.(Topic 2) What is one benefit of PVST+? 54 . When layer 2 is converged. The correct encapsulation type has not been configured. Answer: C Explanation: According to the output shown the switchport (layer 2 Switching) is enabled and the port is in access mode. not an access port. redundant C. provisioned D. root bridge is elected and all port roles (Root. converged B.(Topic 2) Which term describes a spanning-tree network that has all switch ports in either the blocking or forwarding state? A.B. D. Designated and Non-Designated) in all switches are selected. The port is currently configured for access mode. An IP address must be configured for the port. Question No : 55 . C. by using the following command: (Config-if)#switchport mode trunk. spanned Answer: A Explanation: Spanning Tree Protocol convergence (Layer 2 convergence) happens when bridges and switches have transitioned to either the forwarding or blocking state. To make a trunk link the port should configured as a trunk port. Question No : 56 . E.

B. Reference: http://www.html Question No : 57 . or applications rather than on a physical or geographical basis. dedicated bandwidth C.A. This root switch propagates the spanning-tree information associated with that VLAN to all other switches in the network. to provide optimized bandwidth usage.(Topic 2) Which two benefits are provided by creating VLANs? (Choose two. PVST+ automatically selects the root bridge location. contains collisions Answer: A. You can create different logical topologies by using the VLANs on your network to ensure that all of your links are used but that no one link is oversubscribed. C. provides segmentation D. PVST+ supports Layer 3 load balancing without loops. Security: VLANs also improve security by isolating groups. Because each switch has the same information about the network.2 _55_se/configuration/guide/swstp. D. Each instance of PVST+ on a VLAN has a single root switch. PVST+ allows the root switch location to be optimized per VLAN.C Explanation: A VLAN is a switched network that is logically segmented on an organizational basis. High-security users can be grouped into 55 . by functions. PVST+ reduces the CPU cycles for all the switches in the network. Answer: C Explanation: The PVST+ provides Layer 2 load-balancing for the VLAN on which it runs.cisco.) A. project teams. added security B. allows switches to route traffic between subinterfaces E. this process ensures that the network topology is maintained and optimized per VLAN.com/en/US/docs/switches/lan/catalyst3750x_3560x/software/release/12.

the frame is broadcast on all interfaces except the one it was received on. If the address is unknown. The technology logically segments the network into separate Layer 2 broadcast domains whereby packets are switched between ports designated to be within the same VLAN. and no users outside that VLAN can communicate with them. source IP address C. Question No : 59 . LAN Segmentation VLANs allow logical network topologies to overlay the physical switched infrastructure such that any arbitrary collection of LAN ports can be combined into an autonomous user group or community of interest.(Topic 2) Refer to the exhibit. the switch looks at the destination hardware address and finds the interface if it is in its MAC address table. 56 . destination MAC address Answer: F Explanation: When a frame is received. source MAC address B. destination IP address E. destination port address F. switched virtual networks avoid wasting bandwidth.a VLAN.(Topic 2) What does a Layer 2 switch use to decide where to forward a received frame? A. possible on the same physical segment. source switch port D. By containing traffic originating on a particular LAN only to other LANs in the same VLAN. Question No : 58 .

B. From this we know that Fa0/1 is the trunk interface.E Explanation: Carefully observe the information given after command show. F. From the information given by show cdp neighbors we find that there is no Fa0/5 in CDP neighbor. Thus we know that Fa0/5 is connected to a Hub. However. FastEthernet0/5 has statically assigned MAC addresses. C. FastEthernet0/1 is configured as a trunk link. Fa0/1 is connected to Switch2. FastEthernet0/1 is connected to a host with multiple network interface cards. A hub is connected directly to FastEthernet0/5. E. Based on the output shown. Multiple devices are connected directly to FastEthernet0/1. and these MAC are in different VLAN. F0/5 corresponds to two MAC addresses in the same VLAN. there are multiple MAC addresses from different VLANs 57 . seven MAC addresses correspond to Fa0/1.) A.Which two statements are true of the interfaces on Switch1? (Choose two. D. Answer: B. Interface FastEthernet0/2 has been disabled.

attached to the FastEthernet 0/1 interface. This algorithm guarantees that there is one and only one active path between two network 58 . Only trunks are able to pass information from devices in multiple VLANs. STP F. switching loops. and then removes the loop by shutting down selected bridge interfaces. routing loops.1D IEEE algorithm by exchanging BPDU messages with other switches to detect loops. switching loops.(Topic 2) Based on the network shown in the graphic Which option contains both the potential networking problem and the protocol or setting that should be used to prevent the problem? A. switching loops. split horizon D. routing loops. VTP E. split horizon C. STP Answer: F Explanation: The Spanning-Tree Protocol (STP) prevents loops from being formed when switches or bridges are interconnected via multiple paths. Spanning-Tree Protocol implements the 802. hold down timers B. Question No : 60 . routing loops.

physical B. data link C. transport Answer: B Explanation: RSTP and STP operate on switches and are based on the exchange of Bridge Protocol Data Units (BPDUs) between switches. show ip interface brief D. Question No : 61 . Question No : 62 .) A. show interface vlan E.(Topic 2) At which layer of the OSI model is RSTP used to prevent loops? A. show interface trunk B. show interface interface C.(Topic 2) Which two commands can be used to verify a trunk link configuration status on a given Cisco switch interface? (Choose two.E Explanation: Example output from these two commands: 59 . One of the most important fields in BPDUs is the Bridge Priority in which the MAC address is used to elect the Root Bridge -> RSTP operates at Layer 2 – Data Link layer ->. show interface switchport Answer: A. network D.devices.

1q trunking 1 Fa0/21 auto n-802. What set of commands was configured on interface Fa0/3 to produce the given output? A.SW3#show interface trunk Port Mode Encapsulation Status Native vlan Fa0/19 auto n-802.(Topic 2) Refer to the exhibit.1q trunking 1 Fa0/22 auto n-802. On Access Mode VLAN: 1 (default) Trunking Native Mode VLAN: 1 (default) Voice VLAN: none Question No : 63 .1q trunking 1 Port Vlans allowed on trunk Fa0/19 1-4094 Fa0/20 1-4094 Fa0/21 1-4094 Fa0/22 1-4094 SW1#show interface fast 0/2 switchport Name: Fa0/2 Switchport: Enabled Administrative Mode: dynamic desirable Operational Mode: down Administrative Trunking Encapsulation: dot1q Negotiation of TrunkinG. interface FastEthernet 0/3 60 .1q trunking 1 Fa0/20 auto n-802.

so only choice B is correct. interface FastEthernet 0/3 channel-group 2 mode active switchport trunk encapsulation dot1q switchport mode trunk D.channel-group 1 mode desirable switchport trunk encapsulation dot1q switchport mode trunk B. interface FastEthernet 0/3 channel-group 2 mode passive switchport trunk encapsulation dot1q switchport mode trunk C.(Topic 2) Refer to the exhibit. interface FastEthernet 0/3 channel-group 2 mode on switchport trunk encapsulation dot1q switchport mode trunk Answer: B Explanation: Based on the output shown. the configured channel group number was 2 and the mode used was passive. 61 . Question No : 64 .

Check the trunk encapsulation mode for SwitchC's fa0/1 port. 62 . Question No : 65 . Check the duplex mode for SwitchA's fa0/2 port. Check the duplex mode for SwitchC's fa0/1 port. what should the network administrator's next action be? A. Answer: C Explanation: Here we can see that this port is configured for full duplex. C. D.Given this output for SwitchC. Check the trunk encapsulation mode for SwitchA's fa0/2 port.(Topic 2) Refer to the exhibit. A mismatched trunk encapsulation would not result in input errors and CRC errors. so the next step would be to check the duplex setting of the port on the other switch. B.

B. Host B and the switch need to be in the same subnet. E. but pings to the other two hosts are successful. The switch needs an appropriate default gateway assigned. What is the issue? A. RSTP cannot operate with PVST+. The administrator's attempt to telnet to the switch from host B fails.(Topic 2) Which two of these statements regarding RSTP are correct? (Choose two. Host B needs to be assigned an IP address in VLAN 1. Answer: D Explanation: Ping was successful form host B to other hosts because of intervlan routing configured on router.) A.The network administrator normally establishes a Telnet session with the switch from host A. Since VLAN1 interface is already configure on switch Host A was able to telnet switch. The switch interface connected to the router is down. The switch interfaces need the appropriate IP addresses assigned. However. But to manage switch via telnet the VLAN32 on the switch needs to be configured interface vlan32 along with ip address and its appropriate default-gateway address. RSTP defines new port roles. D. host A is unavailable. B. C. Question No : 66 . 63 .

ping address B. E.(Topic 2) Which command can be used from a PC to verify the connectivity between hosts that connect through a switch in the same LAN? A.1D standard evolution.E Explanation: When network topology changes. learning status.C. RSTP is compatible with the original IEEE 802. tracert address C. Traceroute is used to verify the router hop path traffic will take but in this case since the hosts are in the same LAN there will be no router hops involved. referred to as RSTP) will speed up significantly the speed to re-calculate spanning tree. Question No : 68 . RSTP not only defines the role of other ports: alternative port and backup port.(Topic 2) 64 . forwarding status. Question No : 67 . It retains most of the parameters. traceroute address D. but also defines status of 3 ports: discarding status. D.1W. Answer: B. RSTP is a proprietary implementation of IEEE 802. not revolution.1D STP. RSTP is 802. arp address Answer: A Explanation: ICMP pings are used to verify connectivity between two IP hosts. RSTP defines no new port states.1D STP. rapid spanning tree protocol (IEEE802. and makes no changes.

1w introduced an evolution of the Spanning Tree Protocol: Rapid Spanning Tree Protocol (RSTP). 802. E. RSTP provides a faster transition to the forwarding state on point-to-point links than STP does. which significantly reduces the convergence time after a topology change occurs in the network.D Explanation: One big disadvantage of STP is the low convergence which is very important in switched network.1Q Answer: D Explanation: Dynamic Trunking Protocol (DTP) is a Cisco proprietary protocol for negotiating trunking on a link between two devices and for negotiating the type of trunking encapsulation (802. Question No : 69 .3ad B. To overcome this problem.Which IEEE standard protocol is initiated as a result of successful DTP completion in a switch over Fast Ethernet? A. These ports are allowed to immediately enter the forwarding state rather than passively wait for 65 . While STP can take 30 to 50 seconds to transit from a blocking state to a forwarding state.1Q) to be used. 802.) A. or forwarding. F. RSTP port states are blocking. RSTP also uses the STP proposal-agreement sequence. RSTP is typically able to respond less than 10 seconds of a physical link failure. discarding. D. 802. B. in 2001. RSTP significantly reduces topology reconverging time after a link failure.(Topic 2) Which three statements about RSTP are true? (Choose three. RSTP uses the same timer-based process as STP on point-to-point links. Answer: A.B.1D D. learning.1w C. RSTP works by adding an alternative port and a backup port compared to STP. RSTP expands the STP port roles by adding the alternate and backup roles. C. the IEEE with document 802. 802.

a network administrator can manually disable a port. Question No : 70 . * Backup port – A backup/redundant path to a segment where another bridge port already connects. the BID would be 32768:11-22-33-44-55-66. if the switch priority is left at the default. RSTP bridge port roles: * Root port – A forwarding port that is the closest to the root bridge in terms of path cost * Designated port – A forwarding port for every LAN segment * Alternate port – A best alternate path to the root bridge. the switch with the highest MAC address B. This BID is a combination of a default priority value and the switch's MAC address. the switch with the highest IP address D. more commonly referred to as a BID. The alternative port moves to the forwarding state if there is a failure on the designated port for the segment. Assuming the default switch configuration.the network to converge. The lowest BID will win the election process. with the priority value listed first.768 and a MAC address of 11-22-33-44-55-66. which switch is elected as the root bridge for the spanning-tree instance of VLAN 1? A. * Disabled port – Not strictly part of STP. the switch must be attached to a hub. This path is different than using the root port. The backup port applies only when a single switch has two links to the same segment (collision domain). To have two links to the same collision domain.(Topic 2) Three switches are connected to one another via trunk ports. 66 . Therefore. the switch with the lowest IP address Answer: B Explanation: Each switch in your network will have a Bridge ID Priority value. if a Cisco switch has the default priority value of 32. For example. the MAC address is the deciding factor in the root bridge election. the switch with the lowest MAC address C.

The native VLAN is VLAN 1 by default. C. the operation of VTP B. To accomplish this. a method of VLAN trunking C. D. one switch must send frames to another switch and indicate which VLAN a particular frame belongs to. By default.(Topic 2) What is the function of the command switchport trunk native vlan 999 on a Cisco Catalyst switch? A. the process for root bridge selection E.(Topic 2) In a switched environment. B. Question No : 72 . It blocks VLAN 999 traffic from passing on the trunk. On Cisco switches. the switch forwards untagged traffic in the native VLAN configured for the port. It designates VLAN 999 as the default for all unknown tagged traffic. what does the IEEE 802. an approach to wireless LAN communication D.1Q standard describe? A. It creates a VLAN 999 interface. It designates VLAN 999 for untagged traffic.1Q tagging can receive both tagged and untagged traffic. Answer: B Explanation: Configuring the Native VLAN for Untagged Traffic A trunk port configured with 802. a trunk link is created to accomplish this 67 . VLAN pruning Answer: B Explanation: A broadcast domain must sometimes exist on more than one switch in the network.Question No : 71 .

The exhibit represents this design. and servers. Cisco switches support IEEE 802. The router will not accept the addressing scheme.VLAN identification.1Q protocol interconnects VLANs between multiple switches. This design will function as intended. Question No : 73 . With 802. Spanning-tree will need to be used. D.1Q protocol. E. The router interfaces must be encapsulated with the 802. B. A network technician is asked to design a small network with redundancy.(Topic 2) Refer to the exhibit. a network administrator can define a VLAN topology to span multiple physical devices.1Q are different methods of putting a VLAN identifier in a Layer 2 frame.1Q trunk link provides VLAN identification by adding a 4-byte tag to an Ethernet Frame as it leaves a trunk port.1Q for FastEthernet and Gigabit Ethernet interfaces. routers. C. The IEEE 802.1Q. ISL and IEEE 802. with all hosts configured in the same VLAN. The connection between switches should be a trunk. Answer: C 68 . What conclusions can be made about this design? A. An 802.

forwarding E. the router will not accept it and show error when the administrator assigns it. and listening states are merged into a unique 802.1w) Port State Is Port Included in Active Topology? Is Port Learning MAC Addresses? Disabled Discarding No No Blocking Discarding No No Listening Discarding Yes 69 .(Topic 2) Which two states are the port states when RSTP has converged? (Choose two. blocking.) A. The 802. If two interfaces are in the same network. learning D. listening C. discarding B. Question No : 74 .1D) Port State RSTP (802.Explanation: Each interface on a router must be in a different network. disabled Answer: A.D Explanation: There are only three port states left in RSTP that correspond to the three possible operational states. STP (802.1w discarding state.1D disabled.

1d B. 802.(Topic 2) 70 .cisco.No Learning Learning Yes Yes Forwarding Forwarding Yes Yes Reference: http://www. SAP is a concept of the OSI model. 802. VTP C.(Topic 2) Which two protocols are used by bridges and/or switches to prevent loops in a layer 2 network? (Choose two.1q is a Frame Relay protocol which belongs to VLAN.) A.1d) is used to prevent Layer 2 loops. 802.D Explanation: This question is to examine the STP protocol.1q D. STP (802. Question No : 76 .shtml#states Question No : 75 .com/en/US/tech/tk389/tk621/technologies_white_paper09186a0080094cf a. STP E. SAP Answer: A.

The command is rejected.(Topic 2) VLAN 3 is not yet configured on your switch. twelve Answer: A Explanation: Only router can break up broadcast domains but in this exhibit no router is used so there is only 1 broadcast domain. The port turns amber. two C. 71 . C. one B.Refer to Exhibit: How many broadcast domains are shown in the graphic assuming only the default VLAN is configured on the switches? A. What happens if you set the switchport access vlan 3 command in interface configuration mode? A. there are 7 collision domains in this exhibit (6 collision domains between hubs & switches + 1 collision between the two switches). Question No : 77 . The command is accepted and the respective VLAN is added to vlan. six D. For your information.dat. B.

Question No : 78 .1Q trunking are correct? (Choose three.D. 802.1Q trunk link transmits VLAN information through Ethernet. The command is accepted and you must configure the VLAN manually. B. 802. 802. 802.1Q trunk defined Native VLAN in order to forward unmarked frame. E. 802. Receiver switches will transmit all unmarked packets to Native VLAN. it could lead to layer 2 loops. If the Native VLAN in 802. 72 .1Q trunks require full-duplex.C. Answer: C Explanation: The “switchport access vlan 3” will put that interface as belonging to VLAN 3 while also updated the VLAN database automatically to include VLAN 3. The 802.(Topic 2) Refer to the exhibit. point-to-point connectivity. C.1Q native VLAN frames are untagged by default. Question No : 79 .(Topic 2) Which three of these statements regarding 802.1Q trunking ports can also be secure ports. D. the same Native VLAN configuration is required on both sides of the link. Native VLAN is the default VLAN configuration of port. Answer: A.1Q trunks should have native VLANs that are the same at both ends. Switches can forward Layer 2 frame from Native VLAN on unmarked trunks port. Note for the 802. 802.) A.1Q trunks can use 10 Mb/s Ethernet interfaces.E Explanation: By default.1Q trunk ports between two devices.1Q trunk ports on same trunk link is properly configured.

73 . Answer: C Explanation: Since the port is in the blocked status. This switch is running RSTP while the elected designated switch is running 802.1d Spanning Tree. This switch has more than one interface connected to the root network segment in VLAN 2.Given the output shown from this Cisco Catalyst 2950. what is the reason that interface FastEthernet 0/10 is not the root port for VLAN 2? A.(Topic 2) Refer to the topology shown in the exhibit. B. This switch has a lower bridge ID for VLAN 2 than the elected designated switch. Question No : 80 . This switch interface has a higher path cost to the root bridge than another in the topology. D. we must assume that there is a shorter path to the root bridge elsewhere. C.

Each link has a DP.Fa0/0 D.Fa0/1 C.D Explanation: This question is to check the spanning tree election problem. Switch A . Switch C . Next. The three switches in the figure all have the default priority. The smallest will be selected as the root port. Switch B . select the root bridge. Based on the exhibit above. 1. compare the path cost. because it has the smallest MAC address. which can be accomplished by comparing the bridge ID. which can be completed through comparing root path cost.Fa0/1 Answer: B. First. 74 . Select the root port on the non-root bridge. select the Designated Port. Switch C . then compare the BID.) A.Fa0/0 B.Fa0/1 E.Fa0/0 F. it is easy to find that SwitchB is the root bridge. First. Switch B . Switch A . Bridge-id= bridge priority + MAC address. still the smallest will be selected.C. so we should compare the MAC address. The DP on the link between SwitchA and SwitchC is SwitchA'Fa0/1.Which three ports will be STP designated ports if all the links are operating at the same bandwidth? (Choose three. 2. 3. the smallest will be selected. we can find DP on each link. if the costs happen to be the same.

Answer: A.D Explanation: Benefits of VLANs VLAN is a network structure which allows users to communicate while in different locations by sharing one multicast domain and a single broadcast. readdressing. Enhances performance A more efficient use of bandwidth can be achieved allowing many logical networks to use the same network infrastructure. Inexpensive The popularity of VLANs is due to the fact that changes.(Topic 2) What are three benefits of implementing VLANs? (Choose three. For instance. thanks to 802. and host reconfigurations is now a thing of the past. Port-based VLANs increase switch-port use efficiency. Broadcast storms can be mitigated by increasing the number of broadcast domains. 2.C. it helps reduce administrative costs when users are geographically dispersed. Better management A VLAN typically solve the scalability issues that exist in a large network by breaking the main domain into several VLAN groups or smaller broadcast configurations. Broadcast storms can be mitigated by decreasing the number of broadcast domains. Time-consuming. thus increasing their size. E.Question No : 81 . because the VLANs all belong to the same broadcast domain. 75 . D. VLANs make it easier for IT staff to configure new logical groups. because network configuration can be made at ease when need arises. A higher level of network security can be reached by separating sensitive data traffic from other network traffic. 4. adds. 1. and moves can be attained simply by making necessary configurations on the VLAN port.) A. Improves network security High-security can be positioned in different VLAN groups to ensure that non-members cannot receive their broadcasts. A more efficient use of bandwidth can be achieved allowing many logical networks to use the same network infrastructure. a router is added and workgroups relocated into centralized locations. B. They provide numerous networking benefits and have become popular in the market. On the other hand. A more efficient use of bandwidth can be achieved allowing many physical groups to use the same network infrastructure. thus reducing their size. G. 3. thereby encourage better control of multicast traffic as well as broadcast domains. F. C.1Q trunks.

When VLAN users move to another physical location. Each VLAN creates a separate. Segment multiple networks VLANs are typically used to achieve multiple purposes. Question No : 82 . interface FastEthernet 0/1 channel-group 1 mode active switchport trunk encapsulation dot1q switchport mode trunk interface FastEthernet 0/2 channel-group 1 mode active 76 . The SW1 configuration is shown. smaller broadcast domain. A network administrator is configuring an EtherChannel between SW1 and SW2. What is the correct configuration for SW2? A.(Topic 2) Refer to the exhibit.5. Better administration VLANs facilitate grouping of multiple geographical stations. They are popularly used to reduce broadcast traffic. 6. the network does not have to be configured.

(Topic 2) A network administrator creates a layer 3 EtherChannel. interface FastEthernet 0/1 channel-group 1 mode passive switchport trunk encapsulation dot1q switchport mode trunk interface FastEthernet 0/2 channel-group 1 mode passive switchport trunk encapsulation dot1q switchport mode trunk Answer: C Explanation: If the etherchannel was configured with mode “auto”. so. PagP modes: auto | Desirable LACP modes: active | pasive Question No : 83 . interface FastEthernet 0/1 channel-group 1 mode desirable switchport trunk encapsulation dot1q switchport mode trunk interface FastEthernet 0/2 channel-group 1 mode desirable switchport trunk encapsulation dot1q switchport mode trunk D. it was using PagP. we need to configure the other switch with “desirable” mode. bundling four interfaces into channel group 1. On what interface is the IP address configured? 77 .switchport trunk encapsulation dot1q switchport mode trunk B. interface FastEthernet 0/1 channel-group 2 mode auto switchport trunk encapsulation dot1q switchport mode trunk interface FastEthernet 0/2 channel-group 2 mode auto switchport trunk encapsulation dot1q switchport mode trunk C.

you can remain in interface configuration mode and enable other supported interface commands to meet The IP address is assigned to the port channel interface. Optionally.com/c/en/us/td/docs/switches/lan/catalyst2948gand4908g/120_7_w5_15d/configuration/guide/config/ether_ch. the lowest number member interface Answer: A Explanation: To create an EtherChannel interface and assign its IP address and subnet mask. the port-channel 1 interface B. You can configure up to 16 FECs and 1 GEC on the Catalyst 2948G-L3 and up to 4 GECs on the Catalyst 4908G-L3. not the underlying physical member interfaces. the highest number member interface C.(Topic 2) 78 . Step 2 Router(config-if)# ip address ip-address subnet-mask Assigns an IP address and subnet mask to the EtherChannel interface. all member interfaces D. use the following steps beginning in global configuration mode: Command Purpose Step 1 Router(config)# interface port-channel channel-number Router(config-if)# Creates the EtherChannel interface.A.cisco.html Question No : 84 . Reference: http://www. Step 3 Router(config-if)# exit Router(config)# Exits this mode.

All of the interface roles of the root bridge are designated.596d. SwitchA has one Root port and 1 Alternative port so it is not the root bridge. C. Answer: D Explanation: Only non-root bridge can have root port. The MAC address of the root bridge is 0017. not PVST ->. VLAN 20 is running the Per VLAN Spanning Tree Protocol.Refer to the exhibit.596d. B. Fa0/11 is the root port so we can confirm this switch is not the root bridge ->. SwitchA is not the root bridge.(Topic 2) 79 . From the output we learn this switch is running Rapid STP.1580. The Fa0/11 role confirms that SwitchA is the root bridge for VLAN 20. The MAC address of the root bridge is 0017. 0017. not of the root bridge. Which statement is true? A. Question No : 85 . D.1580 is the MAC address of this switch.2a00 ->. because not all of the interface roles are designated.596d.

) A. VLANs help minimize the incorrect configuration of VLANs so it enhances the security of the network ->. Question No : 86 . VLANs allow to group users by function. F. D.E Explanation: When using VLAN the number and size of collision domains remain the same ->. Answer: B. B. on D.C.) A. It is also a big advantage of VLAN ->. VLANs are useful but they are more complex and need more administration ->.Which of the following are benefits of VLANs? (Choose three. blocking F.D Explanation: 80 . They simplify switch administration.C. not by location or geography ->. VLANs increase the number of broadcast domains while decreasing the size of the broadcast domains which increase the utilization of the links. They increase the number of broadcast domains while decreasing the size of the broadcast domains. VLAN increases the size of broadcast domains but does not decrease the number of collision domains ->. transparent B. They increase the size of collision domains. They can enhance network security. forwarding Answer: B. C.(Topic 2) Which three are valid modes for a switch port used as a VLAN trunk? (Choose three. They allow logical grouping of users by function. E. auto C. desirable E. They increase the size of broadcast domains while decreasing the number of collision domains.

Desirable: This mode causes the port to actively attempt to convert the link into a trunk link. This is the default mode for Fast and Gigabit Ethernet ports. The port becomes a non-trunk port even if the adjacent port does not agree to the change. VLANs 1002-1005 are default VLANs for FDDI & Token Ring and they can’t be deleted or used for Ethernet. 1 through 1002 D. desirable. The port becomes a trunk port if the adjacent port is set to on or desirable mode. Question No : 87 . OFF: This mode puts the port into permanent non-trunk mode and negotiates to convert the link into a non-trunk link. The port becomes a trunk port if the adjacent port is set to on. 1 through 1001 B. 2 through 1001 C. Nonegotiate: This mode puts the port into permanent trunk mode. 2 through 1005 Answer: B Explanation: Explanation VLAN 1 is the default VLAN on Cisco switch. modified or removed. It always exists and cannot be added.(Topic 2) Assuming the default switch configuration.These are the different types of trunk modes: ON: This mode puts the port into permanent trunk mode and negotiates to convert the link into a trunk link. and removed on a Cisco switch? A. The adjacent port must be configured manually as a trunk port to establish a trunk link. The port becomes a trunk port even if the adjacent port does not agree to the change. or auto mode. 81 . but does not allow the port to generate Dynamic Trunking Protocol (DTP) frames. Auto: This mode enables the port to convert the link into a trunk link. modified. which VLAN range can be added.

Routing Technologies Question No : 88 . on the other hand. the sum of the mean times in each hop indicates the total time spent to establish the connection. Ping. The history of the route is recorded as the round-trip times of the packets received from each successive host (remote node) in the route (path). ssh address Answer: B Explanation: In computing. telnet address D. then the connection is lost and the route cannot be evaluated. only computes the final round-trip times from 82 .Topic 3. tracert address B. traceroute is a computer network diagnostic tool for displaying the route (path) and measuring transit delays of packets across an Internet Protocol (IP) network. traceroute address C. Traceroute proceeds unless all (three) sent packets are lost more than twice.(Topic 3) Which command would you use on a Cisco router to verify the Layer 3 path to a host? A.

D. Dead interval and AREA numbers Question No : 90 . C. The loopback addresses are on different subnets. Answer: B Explanation: To form an adjacency (become neighbor). B. The process identifier on router A is different than the process identifier on router B.(Topic 3) Refer to the exhibit. router A & B must have the same Hello interval. The values of the dead timers on the routers are different. When running OSPF. Route summarization is enabled on both routers.(Topic 3) 83 . Question No : 89 . what would cause router A not to form an adjacency with router B? A.the destination point.

11.) A. link reliability too low F. to decrease latency by increasing bandwidth 84 .(Topic 3) Why do large OSPF networks use a hierarchical design? (Choose three. Question No : 91 . IPCP closed Answer: D Explanation: Because Interface Serial 0 of Atlanta Router has 192. The Atlanta router is known to have the correct configuration. insufficient bandwidth C. These are from different network.Two routers named Atlanta and Brevard are connected via their serial interfaces as illustrated.1 And Interface Serial 1 of Router Brevard has 192.10. but they are unable to communicate. incorrect subnet mask D. Given the partial configurations. incompatible encapsulation E.168.2. A. identify the fault on the Brevard router that is causing the lack of connectivity. incompatible IP address B.168.

to reduce the complexity of router configuration F. to speed up convergence D. to lower costs by replacing routers with distribution layer switches Answer: B. The hierarchical approach is used to achieve the following: • Rapid convergence because of link and/or switch failures • Deterministic traffic recovery • Scalable and manageable routing hierarchy. Router# show ip eigrp adjacency B.(Topic 3) A network administrator is troubleshooting an EIGRP problem on a router and needs to confirm the IP addresses of the devices with which the router has established adjacency.B. Attached to that backbone via area border routers (ABRs) are a number of secondary tier areas. to reduce routing overhead C. Router# show ip eigrp interfaces D. The retransmit interval (Smooth Round Trip Timer – SRTT) and the queue counts (Q count.C. Question No : 92 . which shows the number of queued EIGRP packets) for the adjacent routers are listed: 85 . What command will display the required information? A. to confine network instability to single areas of the network E. Router# show ip eigrp topology C. reduced routing overhead. The retransmit interval and the queue counts for the adjacent routers also need to be checked. Router# show ip eigrp neighbors Answer: D Explanation: Below is an example of the show ip eigrp neighbors command.D Explanation: OSPF implements a two-tier hierarchical routing model that uses a core or backbone tier known as area zero (0).

3.5.1.Question No : 93 .1.5.2 C.(Topic 3) Refer to the exhibit.5. 10.3 D.3 ->.5.1.4 Answer: C Explanation: The destination IP address 10. Therefore the next-hop should be 10. 10. According to the routing table.5.1.1.2. 10. 10.64/28.65 belongs to 10.1.3.1. 86 .1.65? A.1.2 B.64/27 subnets but the “longest prefix match” algorithm will choose the most specific subnet mask -> the prefix “/29 will be chosen to route the packet. 10.1.1.64/29 & 10. where will the router send a packet destined for 10.4.

Answer: B. Security increases because only the network administrator may change the routing table. Configuration complexity decreases as network size increases.) A. using automatic updates. Routing traffic load is reduced when used in stub network links. it can be argued that it is more secure (and more prone to human errors) since the network administrator will need to make changes to the routing table directly. 87 . D. the load is reduced as stub routers just need a single static default route.G Explanation: Since static routing is a manual process. Route summarization is computed automatically by the router. Question No : 95 . G. F. An efficient algorithm is used to build routing tables. Also. E. in stub networks where there is only a single uplink connection. C. Routing updates are automatically sent to neighbors. B.(Topic 3) Which two are advantages of static routing when compared to dynamic routing? (Choose two.Question No : 94 .(Topic 3) Refer to the exhibit. Routing tables adapt automatically to topology changes. instead of many routes that all have the same next hop IP address.

What is the effect of the configuration that is shown? A. Question No : 96 . It configures SSH globally for all logins. It configures a Cisco network device to use the SSH protocol on incoming communications via the virtual terminal ports. It allows seven failed login attempts before the VTY lines are temporarily shutdown. 88 . What is the maximum size of an IOS file that could be loaded if the original IOS is also kept in flash? A. so another file as large as 4MB can be loaded in addition to the original file. D.8 are being used already. It configures the virtual terminal lines with the password 030752180500. It tells the router or switch to try to establish an SSh connection first and if that fails to use Telnet. there are a total of 8 MB. 4 MB C. C. 5 MB D. B. 3 MB B. but 3. 7 MB E.The technician wants to upload a new IOS in the router while keeping the existing IOS. 8 MB Answer: B Explanation: In this example. E.(Topic 3) Refer to the exhibit.

16.com/warp/public/707/ssh.255.0.0 128.100. ip route 0.0 255.(Topic 3) Refer to the exhibit.255.107.0 172.1. ip route 0.107.0.1 89 . What configuration on the Manchester router will establish a route toward the Internet for traffic that originates from workstations on the Manchester LAN? A.cisco.0.Answer: D Explanation: Secure Shell (SSH) is a protocol which provides a secure remote access connection to network devices. A static route will be established on the Manchester router to direct traffic toward the Internet over the most direct path available. Straight (non-SSH) Telnets are refused.0.0.1 C.1. If you want to prevent non-SSH connections.0.255. add the “transport input ssh” command under the lines to limit the router to SSH connections only. The speed of all serial links is E1 and the speed of all Ethernet links is 100 Mb/s. ip route 0.2 B.255.0 0.shtml Question No : 97 .252 128.0.0 255.0. Reference: www. Communication between the client and server is encrypted in both SSH version 1 and SSH version 2.

16. you need to increase the AD of the static route so that it is higher than the dynamic routing protocol.0 0.0.255. Question No : 98 .D.0.0.0 172. ip route 0. ip route 0. link cost Answer: B Explanation: By default the administrative distance of a static route is 1.0. You should generally only use default routing on stub networks—those with only one exit path out of the network.16.0. Syntax for default route is: ip route <Remote_Network> <Netmask> <Next_Hop_Address>. ip route 0. meaning it will be preferred over all dynamic routing protocols.100.1 E.0.0 255. link delay E.16.100.2 F.0 0.255.0.255 172. According to exhibit. administrative distance C.0 172.(Topic 3) Which parameter would you tune to affect the selection of a static route as a backup. If you want to have the dynamic routing protocol used and have the static route be used only as a backup.0.100. all traffic towards Internet that originates from workstations should forward to Router R1. link bandwidth D.2 Answer: E Explanation: We use default routing to send packets with a remote destination network not in the routing table to the next-hop router. when a dynamic protocol is also being used? A.0.0. 90 . hop count B.

) A. F. It supports up to 2 instances of OSPFv3 over a common link.(Topic 3) Refer to the exhibit. D. It can support multiple IPv6 subnets on a single link. Answer: B. it will display administratively down status. D. B. The interface is not receiving any keepalives. What is the reason that the interface status is "administratively down.(Topic 3) What are two enhancements that OSPFv3 supports over OSPFv2? (Choose two. line protocol down"? A. E. It routes over links rather than over networks. You can bring up an interface having administratively down interface using no shutdown command. There is no encapsulation type configured. The interface has been configured with the shutdown command. Answer: D Explanation: Interfaces can be enabled or disabled with shutdown/no shutdown command. Question No : 100 .D 91 . C.Question No : 99 . B. The wrong type of cable is connected to the interface. It requires the use of ARP. There is a mismatch in encapsulation types. If you interface is down. The interface needs to be configured as a DTE device. C.

changed state to administratively down”. As FastEthernet0/12 will be the last to come up.(Topic 3) Refer to the exhibit. Which of these statements correctly describes the state of the switch once the boot process has been completed? A. you have to assume that no other VLAN interface has been configured with an IP Address. Question No : 102 . which says “Interface VLAN1. Since VLAN1 is the only interface shown in the output. The switch will need a different IOS code in order to support VLANs and STP. More VLANs will need to be created for this switch.) 92 . Remote access management of this switch will not be possible without configuration change. Hence remote management of this switch is not possible unless VLAN1 is brought back up.Question No : 101 . C. Answer: B Explanation: Notice the line. B.(Topic 3) Which characteristics are representatives of a link-state routing protocol? (Choose three. it will be blocked by STP. D. This shows that VLAN1 is shut down.

C. exchanges routing tables with neighbors C.0.0. Unlike Distance vector routing protocol (which utilizes frequent periodic updates).0 192. provides common view of entire topology B.1. calculates shortest path D.255.1.2.255.(Topic 3) Routing has been configured on the local router with these commands: Local(config)# ip route 0.255.D Explanation: Each of routers running link-state routing protocol learns paths to all the destinations in its “area” so we can say although it is a bit unclear.3.0 0.2 Local(config)# ip route 10. Question No : 103 DRAG DROP .0 255.1 Local(config)# ip route 10.3 Drag each destination IP address on the left to its correct next hop address on the right.0.0 192.0.1.0. 93 . link-state routing protocol utilizes event-triggered updates (only sends update when a change occurs) ->.168.0.168.0.168. utilizes frequent periodic updates Answer: A. Link-state routing protocols generate routing updates only (not the whole routing table) when a change occurs in the network topology so Link-state routing protocol like OSPF uses Dijkstra algorithm to calculate the shortest path >.A.0 192.0 255. utilizes event-triggered updates E.

Answer: Explanation: 94 .

This is called the “longest match” rule. 95 .If we have many entries matching for next hop ip address then the router will choose the one with most specific path to send the packet. the route with the most bits in the mask set to “1 will be chosen to route packet.(Topic 3) Refer to the exhibit. Question No : 104 .

168. D.9 &192.10.1? A.0/30 is learned via 2 equal-cost paths (192. Answer: C Explanation: From the routing table we learn that network 192. B.168. C.(Topic 3) 96 .168. how will packets from a host within the 192. Question No : 105 .10. The router will forward packets from R3 to R1 to R2. The router will forward packets from R3 to R2 to R1 AND from R3 to R1. The router will forward packets from R3 to R1.10.192/26 LAN be forwarded to 192.168.10.5) -> traffic to this network will be load-balancing.168.Based on the exhibited routing table.10. The router will forward packets from R3 to R2 to R1.

3 Answer: C Explanation: The highest IP address of all loopback interfaces will be chosen -> Loopback 0 will be chosen as the router ID. routing tables received from other link-state routers F. TTL packets from designated routers Answer: A. Question No : 106 .154. 10.5.5.154.1 D. SAP messages sent by other routers C. 10.16.(Topic 3) What information does a router running a link-state protocol use to build and maintain its topological database? (Choose two.1. 172. 192.C Explanation: 97 .) A.168. LSAs from other routers D. beacons received on point-to-point links E.1 C. Given the output for this command.1.2 B. what router ID will OSPF use for this router? A. hello packets B. if the router ID has not been manually set.Refer to the exhibit.

0 0. In keeping with the friendly neighbor terminology. network 255. but if an IP address is enabled on any interface.0.Neighbor discovery is the first step in getting a link state environment up and running. the advertisements are sent to every neighbor.0. The network command network 0.com/articles/article.255.0. a Hello protocol is used for this step. Example 3-1 Configuring OSPF in a Single Area router ospf 1 network 0.255. The protocol will define a Hello packet format and a procedure for exchanging the packets and processing the information the packets contain.255 area 0 B.255.0 255.(Topic 3) What OSPF command.0 area 0 C.0.ciscopress. Question No : 107 .255. After the adjacencies are established. each received LSA is copied and forwarded to every neighbor except the one that sent the LSA.0.255 area 0 dictates that you do not care (255.255 0.255. will include all interfaces into area 0? A.0.0. In turn.0.asp?p=26919&seqNum=3 Question No : 108 .0.0.255.(Topic 3) 98 . network 0.255) what the IP address is.255. when configured.0.0. place it in area 0.0 255. network all-interfaces area 0 Answer: A Explanation: Example 3-1 displays OSPF with a process ID of 1 and places all interfaces configured with an IP address in area 0. network 0.0 255.255. the routers may begin sending out LSAs. As the term flooding implies.0 area 0 D.255 area 0 Reference: http://www.255.255.

Note: In this case.(Topic 3) 99 . C. Erasing current flash content is requested during the copy dialog. B. If the flash does not have enough space you will see an error message like this: %Error copying tftp://192. it must be the only IOS image in flash. The router cannot verify that the Cisco IOS image currently in flash is valid.168. In order for the router to use the new image as the default. Why is flash memory erased prior to upgrading the IOS image from the TFTP server? A. The current IOS is deleted just because the administrator wants to do so.l23-16a.bin (Not enough space on device) Question No : 109 DRAG DROP . the router asked “Erasing flash before copying? [confirm]” and the administrator confirmed (by pressing Enter) so the flash was deleted.2. the flash has enough space to copy a new IOS without deleting the current one. Answer: C Explanation: During the copy process.Refer to the exhibit. Flash memory on Cisco routers can contain only a single IOS image. D.167/ c1600-k8sy-mz.

It inspects the configuration file in NVRAM for boot instructions. C. It loads the first image file in flash memory. (Not all options are used.) Answer: Question No : 110 . B. D. What function does the router perform next? A. It is now ready to find and load an IOS image. It checks the configuration register. Answer: A Explanation: Default (normal) Boot Sequence 100 .(Topic 3) A Cisco router is booting and has just completed the POST process.Drag the Cisco default administrative distance to the appropriate routing protocol or route. It attempts to boot from a TFTP server.

19. All the interfaces have been properly configured and IP routing is operational.19.19. These commands need to be added to the configuration: C-router(config)# router rip C-router(config-router)# network 172. No further routing configuration is required. Question No : 111 .255 area 0 C.0.0 B. What is true about this configuration? A.0.load IOS from Flash.0.0 D. These commands need to be added to the configuration: C-router(config)# router eigrp 123 C-router(config-router)# network 172.0 0.Check configuration register to see what mode the router should boot up in (usually 0x2102 to read startupconfig in NVRAM / or 0x2142 to start in "setup-mode") .0. These commands need to be added to the configuration: C-router(config)# router ospf 1 C-router(config-router)# network 172.(Topic 3) Refer to the exhibit.Bootstrap starts IOS load . Answer: D 101 .Power on Router .3.Router does POST . The hosts in the VLANs have been configured with the appropriate default gateway. C-router is to be used as a "router-on-a-stick" to route between the VLANs.check the startup-config file in NVRAM for boot-system commands .

If the router Cisco returns the given output and has not had its router ID set manually. If more than one loopback interfaces are configured.2. all traffic destined to a different VLA will be sent to the C-router.168.1 C.1 B. 1.1. no routing protocols need to be configured. Question No : 112 . the router will compare the IP addresses of each of 102 .1 D.Explanation: Since all the same router (C-router) is the default gateway for all three VLANs. 2.(Topic 3) Refer to the exhibit.1. 172.2 Answer: D Explanation: If a router-id is not configured manually in the OSPF routing process the router will automatically configure a router-id determined from the highest IP address of a logical interface (loopback interface) or the highest IP address of an active interface.1.16.1. 192. Since the C-router already knows how to get to all three networks. The C-router will have knowledge of all three networks since they will appear as directly connected in the routing table. what value will OSPF use as its router ID? A.2.

0.0.120) (Process ID 1) Next. the lowest IP address on the router becomes the OSPF Router ID. The router automatically chooses the IP address of a loopback as the OSPF Router ID.(Topic 3) If IP routing is enabled. who are the other routers in our area? Router Link States (Area 1) Link IDADV RouterAgeSeq#ChecksumLink count 10. B.0. D.0.the interfaces and choose the highest IP address from the loopbacks.0.11210.) 103 . By default. Also the router will chose the highest loopback interface as its OSPF router ID (if available).12010.) A.(Topic 3) Which two statements about the OSPF Router ID are true? (Choose two. Answer: A. E.1116000x8000023A 0x0092B31 10.D Explanation: r120#show ip ospf data OSPF Router with ID (10.0. It should be the same on all routers in an OSPF routing instance. Question No : 114 .0.11212460x80000234 0x009CAC1 10.0.11310.1131480x8000022C0x0043993 10.0.11110. It is created using the MAC Address of the loopback interface.0. C.0.0. It identifies the source of a Type 1 LSA.0.0. Question No : 113 .0. which two commands set the gateway of last resort to the default gateway? (Choose two.0.0.1201520x800002400x0046CB1 We can see OSPF Router ID will be used as source of Type 1 LSA.0.

0.0.0.(Topic 3) Which command displays CPU utilization? A.0 172.0 0.0.0.1 0.0. ip default-gateway 0.0.0.0.0.0.16.0 B.0 (next hop)” commands can be used to set the default gateway in a Cisco router.1 Answer: C.16.1 E.0.0. Question No : 115 . show protocols B.2.0.0. ip default-route 0.0 172.16. the full command is “show processes”) command gives us lots of information about each process but in fact it is not easy to read.2.0 D.0 0.0 0. ip route 0. ip default-network 0. show process C. Below shows the output of this command (some next pages are omitted).0 0.E Explanation: Both the “ip default-network” and “ip route 0.2.0. show version Answer: B Explanation: The “show process” (in fact.0.0. show system D.0 C.0. 104 .0. ip route 172.A.

in which the total CPU usage on the router over a period of time: one minute.A more friendly way to check the CPU utilization is the command “show processes cpu history”. one hour. and 72 hours are clearly shown: 105 .

B. + The X-axis of the graph is the increment within the period displayed in the graph. For example.(Topic 3) Which statements describe the routing protocol OSPF? (Choose three. It is used to route between autonomous systems. Question No : 116 . It supports VLSM.) A. from the last graph (last 72 hours) we learn that the highest CPU utilization within 72 hours is 37% about six hours ago.+ The Y-axis of the graph is the CPU utilization. 106 .

It confines network instability to one area of the network. Question No : 118 . it is applied to the running configuration file that is currently running in ram. route summarization. a command that is set once and affects the entire router B. Variable Length Subnet Masks (VLSM). It is simpler to configure than RIP v2. E. Flooding and calculation of the Dijkstra algorithm on a router is limited to changes within an area. Answer: A. OSPF has introduced new concepts such as authentication of routing updates. Question No : 117 . It allows extensive control of routing updates. D. a command that is available in every release of IOS. a command that is implemented in all foreign and domestic IOS versions C. and so forth. a command that is universal in application and supports all protocols D.C. It increases routing overhead on the network.C. a command that can be entered in any configuration mode Answer: A Explanation: When you enter global configuration mode and enter a command. regardless of the version or deployment status E.(Topic 3) What is a global command? A. The configuration of a global command affects the entire router. which is a departure from the Bellman-Ford vector based algorithms used in traditional Internet routing protocols such as RIP.(Topic 3) 107 .E Explanation: The OSPF protocol is based on link-state technology. OSPF uses flooding to exchange link-state updates between routers. Areas are introduced to put a boundary on the explosion of link-state updates. F. An example of a global command is one used for the hostname of the router. Any change in routing information is flooded to all routers in the network.

0.0. The networks attached to the new router do not appear in the routing tables of the other OSPF routers. E. The OSPF area is configured improperly. what configuration error is causing this problem? Router(config)# router ospf 1 Router(config-router)# network 10. Given the information in the partial configuration shown below. The network number is configured improperly.0. Answer: C Explanation: When configuring OSPF. The process id is configured improperly.0 255.A network administrator is trying to add a new router into an established OSPF network. The network subnet mask is configured improperly.(Topic 3) Refer to the exhibit.255 area 0. C. B. The network wildcard mask is configured improperly.0. In this specific example. F.” Question No : 119 . The AS is configured improperly. the correct syntax would have been “network 10. the mask used for the network statement is a wildcard mask similar to an access list.0.0.0 0.0.0. 108 . D.0 area 0 A.

(Topic 3) 109 . Configure Manchester to advertise a static default route to London. B. D. Answer: E Explanation: This static route will allow for communication to the Manchester workstations and it is better to use this more specific route than a default route as traffic destined to the Internet will then not go out the London Internet connection. Configure a dynamic routing protocol on London to advertise all routes to Manchester. C. Configure a static route on London to direct all traffic destined for 172. F.1. E.16.1.0. Configure a static default route on London with a next hop of 10. Configure a dynamic routing protocol on London to advertise summarized routes to Manchester.2.The network administrator must establish a route by which London workstations can forward traffic to the Manchester workstations. Question No : 120 DRAG DROP .1. Configure a dynamic routing protocol on Manchester to advertise a default route to the London router.1.1. What is the simplest way to accomplish this? A.0/22 to 10.

E.D Explanation: 110 . D. Use the shortest-path algorithm to the determine best path. Maintain the topology of the entire network in its database. Answer: Question No : 121 . Answer: A.(Topic 3) What two things will a router do when running a distance vector routing protocol? (Choose two.Drag each definition on the left to the matching term on the right. Send entire routing table to all routers in the routing domain. B. Send periodic updates regardless of topology changes.) A. Update the routing table based on updates from their neighbors. C.

routers discover the best path to destination from each neighbor. 111 . a dynamic routing protocol on InternetRouter to advertise summarized routes to CentralRouter. E.) A. D.Distance means how far and Vector means in which direction. a dynamic routing protocol on InternetRouter to advertise all routes to CentralRouter. Distance Vector routing protocols pass periodic copies of routing table to neighbor routers and accumulate distance vectors.(Topic 3) Refer to the exhibit. In distance vector routing protocols. C. The routing updates proceed step by step from router to router. a static route on InternetRouter to direct traffic that is destined for 172.0.0/16 to CentralRouter. B. a dynamic routing protocol on CentralRouter to advertise summarized routes to InternetRouter.16. The network administrator requires easy configuration options and minimal routing protocol traffic. What two options provide adequate routing table information for traffic that passes between the two routers and satisfy the requests of the network administrator? (Choose two. Question No : 122 . a dynamic routing protocol on CentralRouter to advertise all routes to InternetRouter.

F. The network administrator failed to save the configuration. a static. A network administrator configures a new router and enters the copy startup-config running-config command on the router. The network administrator has made a mistake because the command “copy startup-config running-config” will copy the startup config (which is empty) over the running config (which is configured by the administrator). it enters the system configuration dialog as shown.(Topic 3) Refer to the exhibit. The configuration register is set to 0x2100. D. The router is configured with the boot system startup command. Question No : 123 . What is the cause of the problem? A. B. When the router starts. The configuration register is set to 0x2102. Note: We can tell the router to ignore the start-up configuration on the next reload by 112 . Answer: A Explanation: The “System Configuration Dialog” appears only when no startup configuration file is found.F Explanation: The use of static routes will provide the necessary information for connectivity while producing no routing traffic overhead. The network administrator powers down the router and sets it up at a remote location. So everything configured was deleted. The boot system flash command is missing from the configuration. E. C. Answer: C. default route on CentralRouter that directs traffic to InternetRouter.

Question No : 124 . although the hosts attached to Switch1 can ping the interface Fa0/0 of the router. 113 .setting the register to 0×2142. This will make the “System Configuration Dialog” appear at the next reload.(Topic 3) The network administrator cannot connect to Switch1 over a Telnet session.

D. 114 . for the switch itself to reach networks outside the local one. However.255. B. Switch1(config)# ip default-gateway 192.24.168.Given the information in the graphic and assuming that the router and Switch2 are configured properly. It is globally significant and is used to identify OSPF stub areas.0 C. the ip default-gateway command must be used. The numbers you can use are from 1 to 65.24. or each router can have a different number-it just doesn't matter. Switch1(config)# line con0 Switch1(config-line)# password cisco Switch1(config-line)#login B. C. It is locally significant and must be the same throughout an area. It is locally significant and is used to identify an instance of the OSPF database.2 billion. we know that connectivity. Switch1(config)# interface fa0/1 Switch1(config-if)# ip address 192.255. Answer: B Explanation: The Process ID for OSPF on a router is only locally significant and you can use the same number on each router. are good. etc.3 255. Switch1(config)# interface fa0/1 Switch1(config-if)# switchport mode trunk Answer: C Explanation: Since we know hosts can reach the router through the switch. It is globally significant and is used to represent the AS number.(Topic 3) Which statement describes the process ID that is used to run OSPF on a router? A.168. Switch1(config)# interface fa0/1 Switch1(config-if)# duplex full Switch1(config-if)# speed 100 E. which of the following commands should be issued on Switch1 to correct this problem? A. Don't get this confused with area numbers. duplex.1 D. Question No : 125 .535. which can be from 0 to 4. Speed.

Question No : 126 . show version Answer: D Explanation: The “show version” command can be used to show the last method to powercycle (reset) a router.(Topic 3) Which command reveals the last method used to powercycle a router? A. 115 . show reload B. show running-config D. show boot C.

Question No : 127 - (Topic 3)
Refer to the graphic.

116

R1 is unable to establish an OSPF neighbor relationship with R3. What are possible
reasons for this problem? (Choose two.)
A. All of the routers need to be configured for backbone Area 1.
B. R1 and R2 are the DR and BDR, so OSPF will not establish neighbor adjacency with
R3.
C. A static route has been configured from R1 to R3 and prevents the neighbor adjacency
from being established.
D. The hello and dead interval timers are not set to the same values on R1 and R3.
E. EIGRP is also configured on these routers with a lower administrative distance.
F. R1 and R3 are configured in different areas.
Answer: D,F
Explanation:
This question is to examine the conditions for OSPF to create neighborhood.
So as to make the two routers become neighbors, each router must be matched with the
following items:
1. The area ID and its types;
2. Hello and failure time interval timer;
3. OSPF Password (Optional).

Question No : 128 - (Topic 3)
What are two enhancements that OSPFv3 supports over OSPFv2? (Choose two.)
117

A. It requires the use of ARP.
B. It can support multiple IPv6 subnets on a single link.
C. It supports up to 2 instances of OSPFv3 over a common link.
D. It routes over links rather than over networks.
Answer: B,D
Explanation:
Here is a list of the differences between OSPFv2 and OSPFv3:
They use different address families (OSPFv2 is for IPv4-only, OSPFv3 can be
used for IPv6-only or both protocols
OSPFv3 introduces new LSA types
OSPFv3 has different packet format
OSPFv3 uses different flooding scope bits (U/S2/S1)
OSPFv3 adjacencies are formed over link-local IPv6 communications
OSPFv3 runs per-link rather than per-subnet
OSPFv3 supports multiple instances on a single link, Interfaces can have multiple
IPv6 addresses
OSPFv3 uses multicast addresses FF02::5 (all OSPF routers), FF02::6 (all OSPF
DRs)
OSPFv3 Neighbor Authentication done with IPsec (AH)
OSPFv2 Router ID (RID) must be manually configured, still a 32-bit number
Reference: http://www.networkworld.com/article/2225270/cisco-subnet/ospfv3-for-ipv4-andipv6.html

Question No : 129 - (Topic 3)
Which command is used to display the collection of OSPF link states?
A. show ip ospf link-state
B. show ip ospf lsa database
C. show ip ospf neighbors
D. show ip ospf database
Answer: D
Explanation:
The “show ip ospf database” command displays the link states. Here is an example:

118

Here is the lsa database on R2.
R2#show ip ospf database
OSPF Router with ID (2.2.2.2) (Process ID 1)
Router Link States (Area 0)
Link ID ADV Router Age Seq# Checksum Link count
2.2.2.2 2.2.2.2 793 0x80000003 0x004F85 2
10.4.4.4 10.4.4.4 776 0x80000004 0x005643 1
111.111.111.111 111.111.111.111 755 0x80000005 0x0059CA 2
133.133.133.133 133.133.133.133 775 0x80000005 0x00B5B1 2
Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
10.1.1.1 111.111.111.111 794 0x80000001 0x001E8B
10.2.2.3 133.133.133.133 812 0x80000001 0x004BA9
10.4.4.1 111.111.111.111 755 0x80000001 0x007F16
10.4.4.3 133.133.133.133 775 0x80000001 0x00C31F

Question No : 130 - (Topic 3)
Refer to the exhibit.

When running EIGRP, what is required for RouterA to exchange routing updates with
RouterC?

119

A. AS numbers must be changed to match on all the routers
B. Loopback interfaces must be configured so a DR is elected
C. The no auto-summary command is needed on Router A and Router C
D. Router B needs to have two network statements, one for each connected network
Answer: A
Explanation:
This question is to examine the understanding of the interaction between EIGRP routers.
The following information must be matched so as to create neighborhood.
EIGRP routers to establish, must match the following information:
1. AS Number;
2. K value.

Question No : 131 - (Topic 3)
Refer to the exhibit.

The Lakeside Company has the internetwork in the exhibit. The administrator would like to
reduce the size of the routing table on the Central router. Which partial routing table entry
in the Central router represents a route summary that represents the LANs in Phoenix but
120

no additional subnets?
A. 10.0.0.0/22 is subnetted, 1 subnets
D 10.0.0.0 [90/20514560] via 10.2.0.2, 6w0d, Serial0/1
B. 10.0.0.0/28 is subnetted, 1 subnets
D 10.2.0.0 [90/20514560] via 10.2.0.2, 6w0d, Serial0/1
C. 10.0.0.0/30 is subnetted, 1 subnets
D 10.2.2.0 [90/20514560] via 10.2.0.2, 6w0d, Serial0/1
D. 10.0.0.0/22 is subnetted, 1 subnets
D 10.4.0.0 [90/20514560] via 10.2.0.2, 6w0d, Serial0/1
E. 10.0.0.0/28 is subnetted, 1 subnets
D 10.4.4.0 [90/20514560] via 10.2.0.2, 6w0d, Serial0/1
F. 10.0.0.0/30 is subnetted, 1 subnets
D 10.4.4.4 [90/20514560] via 10.2.0.2, 6w0d, Serial0/1
Answer: D
Explanation:
The 10.4.0.0/22 route includes 10.4.0.0/24, 10.4.1.0/24, 10.4.2.0/24 and 10.4.3.0/24
networks only.

Question No : 132 - (Topic 3)
Refer to the exhibit.

A network associate has configured OSPF with the command:

121

City(config-router)# network 192.168.12.64 0.0.0.63 area 0
After completing the configuration, the associate discovers that not all the interfaces are
participating in OSPF. Which three of the interfaces shown in the exhibit will participate in
OSPF according to this configuration statement? (Choose three.)
A. FastEthernet0 /0
B. FastEthernet0 /1
C. Serial0/0
D. Serial0/1.102
E. Serial0/1.103
F. Serial0/1.104
Answer: B,C,D
Explanation:
The “network 192.168.12.64 0.0.0.63 equals to network 192.168.12.64/26. This network
has:
+ Increment: 64 (/26= 1111 1111.1111 1111.1111 1111.1100 0000)
+ Network address: 192.168.12.64
+ Broadcast address: 192.168.12.127
Therefore all interfaces in the range of this network will join OSPF.

Question No : 133 - (Topic 3)
Which commands are required to properly configure a router to run OSPF and to add
network 192.168.16.0/24 to OSPF area 0? (Choose two.)
A. Router(config)# router ospf 0
B. Router(config)# router ospf 1
C. Router(config)# router ospf area 0
D. Router(config-router)# network 192.168.16.0 0.0.0.255 0
E. Router(config-router)# network 192.168.16.0 0.0.0.255 area 0
F. Router(config-router)# network 192.168.16.0 255.255.255.0 area 0
Answer: B,E
Explanation:

122

(Topic 3) Refer to the exhibit. The CDP information was received on port Serial0/0 of the Manchester router.255.1.E Explanation: 123 . The serial network between the two devices has a mask of 255. D.C. We also need to assgin an area to this process ->.In the router ospf command.1.) A. The CDP information was sent by port Serial0/0 of the London router.2. Answer: A. The Manchester serial address is 10. The Manchester router is a Cisco 2610. C.252. F. The London router is a Cisco 2610. not a subnet mask. the ranges from 1 to 65535 so o is an invalid number -> but To configure OSPF.1. what three statements are true of these devices? (Choose three. Given the output that is shown. B. we need a wildcard in the “network” statement. Question No : 134 .1.255.1. E. The Manchester serial address is 10. The two exhibited devices are the only Cisco devices on the network.

(Topic 3) Which three elements must be used when you configure a router interface for VLAN trunking? (Choose three. Question No : 135 . and “Port ID (outgoing port)” refers to the port on the neighbor router.From the output. in this case it is the port of Manchester router. well written article on this operation can be found here: http://www.(Topic 3) On a corporate network.1.255. Please notice that “Interface” refers to the local port on the local router. as shown in the output ->. a management domain for each subinterface D. subinterface numbering that matches VLAN tags Answer: B. So we can deduce the ip address (of the serial interface) of Manchester router is 10.2 and the question stated that the subnet mask of the network between two routers is 255.252. The platform of the neighbor router is cisco 2610. Therefore there are only 2 available hosts in this network (22 – 2 = 2). one subinterface per VLAN F.1.com/RouterOnAStickCCNACertificationExamTutorial. but they are unable to communicate with hosts on different VLANs. we learn that the IP address of the neighbor router is 10.htm Question No : 136 . hosts on the same VLAN can communicate with each other. Maybe the most difficult choice of this question is the answer E or F. What is needed to allow communication between the VLANs? 124 .E Explanation: This scenario is commonly called a router on a stick. one physical interface for each subinterface B. one IP network or subnetwork for each subinterface C.thebryantadvantage. subinterface encapsulation identifiers that match VLAN tags E.D.1.1.255. A short.1 ->.) A.

a switch with an access link that is configured between the switches D.1Q Virtual LAN RouterA(config-subif)#encapsulation dot1Q or isl VLAN ID RouterA(config-subif)# ip address x. a router with subinterfaces configured on the physical interface that is connected to the switch B. establishing Trunking links to achieve communications of devices which belong to different VLANs. a router with an IP address on the physical interface connected to the switch C.x y. With VLAN trunking.y Question No : 137 . Here is the example of configuring the router for inter-vlan communication RouterA(config)#int f0/0.(Topic 3) Refer to the exhibit. you need to use VLAN trunking between the switches. End user devices connect to switch ports that provide simple connectivity to a single VLAN each. The attached devices are unaware of any VLAN structure. Hence. they can communicate with the help of Layer3 router. then make the subinterface on the router to connect to the switch. 125 . the switches tag each frame sent between switches so that the receiving switch knows to what VLAN the frame belongs. When using VLANs in networks that have multiple interconnected switches.y.x.1 RouterA(config-subif)#encapsulation ? dot1Q IEEE 802.A. To change this and allow inter-VLAN communication. only hosts that are members of the same VLAN can communicate.x. By default.y. you need a router or a layer 3 switch. a switch with a trunk link that is configured between the switches Answer: A Explanation: Different VLANs can't communicate with each other. it is needed to connect a router to a switch.

Router1 is acting as a TFTP server for other routers. Router1 defaulted to ROMMON mode and loaded the IOS image from a TFTP server. Check Configuration Register value (NVRAM) which can be modified using the configregister command 0 = ROM Monitor mode 1 = ROM IOS 2 . Check for boot system commands (NVRAM) If boot system commands in startup-config a.C Explanation: The loading sequence of CISCO IOS is as follows: Booting up the router and locating the Cisco IOS 1. D. Startup-config filE. Cisco routers will first attempt to load an image from TFTP for management purposes. Run boot system commands in order they appear in startup-config to locate the IOS b. use default fallback sequence to locate the IOS (Flash.) A. Router1 cannot locate a valid IOS image in flash memory. Answer: A.For what two reasons has the router loaded its IOS image from the location that is shown? (Choose two. [If boot system commands fail. Router1 has specific boot system commands that instruct it to load IOS from a TFTP server. E. B. POST (power on self-test) 2.15 = startup-config in NVRAM 4. C. Bootstrap code executed 3. 126 .

The company uses EIGRP as the routing protocol.192/26 network to a host on the LAN attached to router R1? 127 . the router will use the default fallback sequence for locating the IOS and then it will enter setup mode or the setup dialogue.168.TFTP. but there is no startup-config file. TFTP server (netboot) c. What path will packets take from a host on the 192. Flash (sequential) b. ROM)?] If no boot system commands in startup-config use the default fallback sequence in locating the IOS: a. Question No : 138 .10. If IOS is loaded.(Topic 3) Refer to the exhibit. ROM (partial IOS) or keep retrying TFTP depending upon router model 5.

Question No : 139 .255. B.255.255.0 255.25.25.10.10.252 Answer: C 128 .255.8/30 network (the network between R1 & R3) -> packets destined for 192.25.255.255.(Topic 3) Refer to the exhibit. 192.255. The path of the packets will be both R3 to R2 to R1 AND R3 to R1.10. From the output of the routing table of R3 we learn this network can be reach via 192.255. 192.16 255.168. 192. The path of the packets will be R3 to R2 to R1.168.0 255.240 F.240 B.255. which is an IP address in 192.28 255.25.64 will be routed from R3 -> R1 -> LAN on R1.9. 192.64/26 subnet.A.240 D.168. 192.10.168.255.252 C.25. C.168. 192.168.168. D. Answer: D Explanation: Host on the LAN attached to router R1 belongs to 192.28 255.16 255.25.255. The path of the packets will be R3 to R1. Which address and mask combination represents a summary of the routes learned by EIGRP? A.168.252 E.168.255.168. The path of the packets will be R3 to R1 to R2.

the router will choose to 129 . all three routes E. The binary version of 24 is 11000. the RIPv2 route D. The last is from RIPv2 and has a metric of 4. Therefore the subnet mask is /28 (=1111 1111. So. Another route is from OSPF with a metric of 782.240.28 -> The increment should bE.255. One route is from EIGRP and has a composite metric of 20514560. Which route or routes will the router install in the routing table? A.240. the best answer should be 192. Question No : 140 .1111 1111.25. the OSPF route B.(Topic 3) A router has learned three possible routes that could be used to reach a destination network.11110000) = 255.20 + 192.255.16 + 192. The mask is 255. The binary version of 16 is 10000.240.25. The subnet mask is /28. the EIGRP route C. 28 – 16 = 12 but 12 is not an exponentiation of 2 so we must choose 16 (24). the OSPF and RIPv2 routes Answer: B Explanation: When one route is advertised by more than one routing protocol.168.Explanation: The binary version of 20 is 10100.25.168.168.1111 1111. The binary version of 28 is 11100.255.168.16 255.25.255.24 + 192.255.255. EIGRP learned 4 routes and we need to find out the summary of them: + 192.25.168. Note: From the output above.

use the routing protocol which has lowest Administrative Distance. a primary route. a backup route. which is known as the Successor. a backup route. The Administrative Distances of popular routing protocols are listed below: Question No : 141 . stored in the routing table C.(Topic 3) Which type of EIGRP route entry describes a feasible successor? A. The Topology Table list all the learned routers to destination whilst the Routing Table contains the best route to a destination. stored in the routing table B. stored in the topology table Answer: C Explanation: EIGRP uses the Neighbor Table to list adjacent routers. Question No : 142 . The Feasible Successor is a backup route to a destination which is kept in the Topology Table. a primary route. stored in the topology table D.(Topic 3) 130 .

0 network. IP routing is not enabled. what is the cause of the failure? A.What is the effect of using the service password-encryption command? A. console. The network administrator connected to router Coffee via the console port. B. Based on the output of the show ip route command and the topology shown in the graphic. the security of device access is improved. It will encrypt the secret password and remove the enable secret password from the configuration. issued the show ip route command. It will encrypt all current and future passwords.5. Answer: E Explanation: Enable vty.0 network cannot reach the server located on the 172.17.22. C. B. Only the enable password will be encrypted.31. Use the show run command to show most passwords in clear text. AUX passwords are configured on the Cisco device. 131 . Only the enable secret password will be encrypted. As a result. D. The network has not fully converged. E.(Topic 3) Users on the 172. Only passwords configured after the command has been entered will be encrypted. and was able to ping the server. If the service password-encryption is used. all the passwords are encrypted. Question No : 143 .

0.2 to reach server located on 172.C Explanation: OSPF uses a LSDB (link state database) and fills this with LSAs (link state advertisement).0 0. Answer: C Explanation: The default route or the static route was configured with incorrect next-hop ip address 172.0. then many of these LSA types (Summary ASBR LSA.2. The correct IP address will be 172. IP route 0. Answer: B.0 172. The link types are as follows: •LSA Type 1: Router LSA •LSA Type 2: Network LSA •LSA Type 3: Summary LSA •LSA Type 4: Summary ASBR LSA •LSA Type 5: Autonomous system external LSA •LSA Type 6: Multicast OSPF LSA •LSA Type 7: Not-so-stubby area LSA •LSA Type 8: External attribute LSA for BGP If all routers are in the same area.22.0.2 Question No : 144 .5. It reduces the number of required OSPF neighbor adjacencies. The routing table on Coffee has not updated. D. It reduces the types of LSAs that are generated. It removes the need for virtual links. E. F. E.) A.18.18. It increases LSA response times. 132 .22. B.31. It is less CPU intensive for routers in the single area. D.(Topic 3) What are two benefits of using a single OSPF area network design? (Choose two.0 network.0.22. The neighbor relationship table is not correctly updated.C. A static route is configured incorrectly. The FastEthernet interface on Coffee is disabled. C.19.

Question No : 145 . flash memory D.E Explanation: The following locations can be configured as a source for the IOS image: 1. However. NVRAM C. + ROM (used if no other source is found) 4. The area through which you configure the virtual link. if all locations are in a single OSPF area this is not needed. must have full routing information. You can also use virtual links to connect two parts of a partitioned backbone through a nonbackbone area.external LSA. + TFTP server 3. (Please read the explanation of Question 4 for more information) Question No : 146 . known as a transit area. HTTP server E.(Topic 3) Which two locations can be configured as a source for the IOS image in the boot system command? (Choose two. + Flash (the default location) 2. etc) will not be used and will not be generated by any router. Virtual links are not ideal and should really only be used for temporary network solutions or migrations. TFTP server F. you can use a virtual link to connect to the backbone through a non-backbone area.) A. RAM B. The transit area cannot be a stub area. where this is not possible. All areas in an Open Shortest Path First (OSPF) autonomous system must be physically connected to the backbone area (Area 0). In some cases. Telnet server Answer: C.(Topic 3) 133 .

1.10.10. First.0 0.0.255 C.10. What will the router consider the most reliable information about the path to that network? A.168.1.254/24 B.255.1.1.168. router ospf 1 network 10.10. meaning the most specific route.255.0.255 area 0 D.0 0.1.0.0.0. router ospf network 10.(Topic 3) What command sequence will configure a router to run OSPF and add network 10. So. router ospf area 0 network 10. router ospf area 0 network 10.A router receives information about network 192. from all the /24 routes it will choose the one with the lowest administrative distance.255 Answer: C 134 .0.1.0.168.1.168.0/24 with a local serial interface configured as the next hop Answer: A Explanation: When there is more than one way to reach a destination.255.0 /24 to area 0? A.0 area 0 B.1 F. an OSPF update for network 192.0/24 D.0.255 area 0 E.0/16 E.168. in this case the /24 routes will be chosen over the /16 routes.0 0. Question No : 147 .0/24 from multiple sources. router ospf 1 network 10.10. it will choose the best one based on a couple of things.0 area 0 F. a directly connected interface with an address of 192. router ospf network 10.0 255.10.0.1.168.0 0.1. it will choose the route that has the longest match.1.1.0 255. a static route to network 192. Next.168.1.1.0/24 C. a static route to network 192. a default route with a next hop address of 192.1. Directly connected routes have an AD of 1 so this will be the route chosen. a RIP update for network 192.255.

Step 2 Configure terminal Example: Device# configure terminal Enters global configuration mode.Explanation: Enabling OSPF SUMMARY STEPS 1.0.168. network ip-address wildcard-mask area area-id 5.0. enable 2. Step 4 Network ip-address wildcard-mask area area-id Example: Device(config-router)# network 192.129. router ospf process-id 4.16 0. end DETAILED STEPS Command or Action Purpose Step 1 Enable Example: Device> enable Enables privileged EXEC mode. Step 3 router ospf process-id Example: Device(config)# router ospf 109 Enables OSPF routing and enters router configuration mode. Enter your password if prompted. configure terminal 3.3 area 0 Defines an interface on which OSPF runs and defines the area ID for that interface. Step 5 End Example: Device(config-router)# end 135 .

service password-encryption line vty 1 login password cisco D. Incorrect answer: command.0.255 line vty 0 4 login password cisco access-class 1 B. line vty0 4 would enable all 5 vty connections. 136 . the password for Telnet access should be encrypted.168. Reference: http://www.Exits router configuration mode and returns to privileged EXEC mode.0 0.html#GUID-588D1301-F63C-4DAC-BF1C-C3735EB13673 Question No : 148 .0. For anyone viewing the configuration and issuing the show run command. Which set of commands will accomplish this task? A. enable password secret line vty 0 login password cisco C.(Topic 3) A network administrator needs to allow only one Telnet connection to a router.1.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_ospf/configuration/124t/iro-12-4t-book/iro-cfg. service password-encryption line vty 0 4 login password cisco Answer: C Explanation: Only one VTY connection is allowed which is exactly what's requested. service password-encryption access-list 1 permit 192.

(Topic 3) Which two statements describe the process identifier that is used in the command to configure OSPF on a router? (Choose two. All OSPF routers in an area must have the same process ID.(Topic 3) Refer to the graphic. The valid process ID’s are shown below: Edge-B(config)#router ospf ? <1-65535> Process ID Question No : 150 . Hello packets are sent to each neighbor to determine the processor identifier. B. The process number can be any number from 1 to 65. Answer: C. Different process identifiers can be used to run multiple OSPF processes D.535. C.Question No : 149 .D Explanation: Multiple OSPF processes can be configured on a router using multiple process ID’s.) Router(config)# router ospf 1 A. Only one process number can be used on the same router. E. 137 .

6 0.6. HFD(config)# ip route 10.0 255.6.5.5.6.) A.5.5.255.255 fa0/0 B.5.6 255. 100 C.0.5.255 10.6.A static route to the 10.0 fa0/0 D.6 C.5. HFD(config)# ip route 10.5.6. HFD(config)# ip route 10.0 0. Administrative distance defines the reliability of a routing protocol. HFD(config)# ip route 10. HFD(config)# ip route 10.6.0 F.6.5.255.255.6.255.0.4. Which commands will accomplish this? (Choose two.0.5.6.255 10.255.5.0 255.(Topic 3) What is the default administrative distance of OSPF? A.255. HFD(config)# ip route 10.0 10.0: the destination network +fa0/0: the exit-interface Question No : 151 .255. 110 D.0 255. 120 Answer: C Explanation: Administrative distance is the feature that routers use in order to select the best path when there are two or more different routes to the same destination from two different routing protocols.0.5.0 0.4.255.6 E.0 255. Each routing 138 .0 fa0/0: + 10.4.0 10.0. 90 B.0 Answer: C.5.255.4.0/24 network is to be configured on the HFD router.255.D Explanation: The simple syntax of static route: ip route destination-network-address subnet-mask {next-hop-IP-address | exit-interface} + destination-network-address: destination network address of the remote network + subnet mask: subnet mask of the destination network + next-hop-IP-address: the IP address of the receiving interface on the next-hop router + exit-interface: the local interface of this router where the packets will go out In the statement “ip route 10.0.

Default Distance Value Table This table lists the administrative distance default values of the protocols that Cisco supports: Route Source Default Distance Values Connected interface 0 Static route 1 Enhanced Interior Gateway Routing Protocol (EIGRP) summary route 5 External Border Gateway Protocol (BGP) 20 Internal EIGRP 90 IGRP 100 OSPF 110 Intermediate System-to-Intermediate System (IS-IS) 115 Routing Information Protocol (RIP) 120 Exterior Gateway Protocol (EGP) 140 On Demand Routing (ODR) 160 External EIGRP 170 Internal BGP 200 Unknown* 255 139 .protocol is prioritized in order of most to least reliable (believable) with the help of an administrative distance value.

E. The maximum frame size that can traverse this interface is 1500 bytes. The maximum packet size that can traverse this interface is 1500 bytes.(Topic 3) Refer to the exhibit. The maximum segment size that can traverse this interface is 1500 bytes.Question No : 152 . D.(Topic 3) Which command shows your active Telnet connections? A. C. B. The maximum number of bytes that can traverse this interface per second is 1500. show session C. Answer: E Explanation: The Maximum Transmission Unit (MTU) defines the maximum Layer 3 packet (in bytes) that can be transmitted out the interface. show cdp neigbors B. show vty logins Answer: B Explanation: 140 . show users D. What is the meaning of the output MTU 1500 bytes? A. Question No : 153 . F. The minimum packet size that can traverse this interface is 1500 bytes. The minimum segment size that can traverse this interface is 1500 bytes.

show version E. Question No : 155 . the amount of available flash and RAM memory C. The “cdp enable” command is an interface command. what should be checked on the router. show processes 141 . and which command should be used to gather this information? (Choose two. cdp enable C. Question No : 154 . cdp run D. the amount of available ROM B. upgraded version of the IOS.The “show users” shows telnet/ssh connections to your router while “show sessions” shows telnet/ssh connections from your router (to other devices). the version of the bootstrap software present on the router D. disable it with the no cdp run command.(Topic 3) Which command would you configure globally on a Cisco router that would allow you to view directly connected Cisco devices? A.) A. If you prefer not to use the CDP capability. meaning connections from your router so the answer should be A. The question asks about “your active Telnet connections”. In order to reenable CDP. enable cdp B. not global.(Topic 3) Before installing a new. use the cdp run command in global configuration mode. run cdp Answer: C Explanation: CDP is enabled on Cisco routers by default.

We can check both with the “show version” command.(Topic 3) What is the default maximum number of equal-cost paths that can be placed into the routing table of a Cisco OSPF router? A. 8 C. Also running the new IOS may require more RAM than the older one so we should check the available RAM too. Command Default 8 paths 142 . unlimited Answer: B Explanation: maximum-paths (OSPF) To control the maximum number of parallel routes that Open Shortest Path First (OSPF) can support.F. 16 D. Syntax Description maximum Maximum number of parallel routes that OSPF can install in a routing table. use the maximum-paths command.D Explanation: When upgrading a new version of the IOS we need to copy the IOS to the Flash so first we have to check if the Flash has enough memory or not. Question No : 156 . The range is from 1 to 16 routes. 2 B. show running-config Answer: B.

Bandwidth B. Bandwidth.(Topic 3) Which parameter or parameters are used to calculate OSPF cost in Cisco routers? A. 143 . It is meant to prevent someone from looking over your shoulder and seeing the password. Router# password-encryption Answer: C Explanation: Command The “service password-encryption” command allows you to encrypt all passwords on your router so they cannot be easily guessed from your running-config. Bandwidth. MTU. This is configured in global configuration mode. Router(config)# service password-encryption D. Reliability. Delay. Router(config)# password-encryption C.(Topic 3) Which command encrypts all plaintext passwords? A.Question No : 157 . and MTU D. and Load Answer: A Explanation: The well-known formula to calculate OSPF cost is Cost = 108 / Bandwidth Question No : 158 . Delay. Bandwidth and Delay C. Router# service password-encryption B. that is all. This command uses a very weak encryption because the router has to be very quickly decode the passwords for its operation.

1 255. Router(config)# interface fastethernet 0/0 Router(config-if)# no shut down Router(config)# interface fastethernet 0/0.10.) A.2 Router(config-subif)# encapsulation dot1q 20 Router(config-subif)# ip address 192.0 Router(config-if)# no shut down B.255.255.20.168.255.10. Switch1(config)# vlan database Switch1(config-vlan)# vtp domain XYZ Switch1(config-vlan)# vtp server 144 .1.0 Router(config-router)# network 192.0 Router(config)# interface fastethernet 0/0.20. What commands must be configured on the 2950 switch and the router to allow communication between host 1 and host 2? (Choose two. Router(config)# router eigrp 100 Router(config-router)# network 192.Question No : 159 .(Topic 3) Refer to the exhibit.168.168.1 255.0 D.168.0 C. Router(config)# interface fastethernet 0/0 Router(config-if)# ip address 192.255.1 Router(config-subif)# encapsulation dot1q 10 Router(config-subif)# ip address 192.255.1 255.168.255.

1 Answer: B. the connection to the router need to be configured as a trunk using the switchport mode trunk command and it will need a default gateway for VLAN 1. On the switch. Switch1(config)# interface vlan 1 Switch1(config-if)# ip default-gateway 192. What can be determined about the router from the console output? A. No configuration file was found in flash.E Explanation: The router will need to use subinterfaces.1. Question No : 160 . C. Configuration file is normal and will load in 15 seconds. Switch1(config)# interface fastethernet 0/1 Switch1(config-if)# switchport mode trunk F. No configuration file was found in NVRAM. the System Configuration Dialog will appear to ask if we want to enter the initial configuration dialog or not.(Topic 3) Refer to the exhibit. where each subinterface is assigned a VLAN and IP address for each VLAN.E. D. Answer: A Explanation: When no startup configuration file is found in NVRAM. No configuration file was found in the PCMCIA card. B. 145 .168.

B. Question No : 162 .(Topic 3) Refer to the exhibit. The interfaces are functioning correctly.Question No : 161 . Two interfaces have problems. D. Serial0/0 is down because it has been disabled using the “shutdown” command. C. Assuming that the entire network topology is shown.(Topic 3) 146 . Answer: C Explanation: The output shown shows normal operational status of the router’s interfaces. The operational status of the interfaces cannot be determined from the output shown. One interface has a problem. what is the operational status of the interfaces of R2 as indicated by the command output shown? A.

such as Password Authentication Protocol (PAP) and Challenge Handshake Authentication Protocol (CHAP). in what order does it pass through each state? A. 147 . Attempt.html Topic 4. 2-Way. The states are (in order) Down. exstart state > full state > loading state > exchange state D. Init. a router goes through several state changes before it becomes fully adjacent with its neighbor. Loading. Reference: http://www.25 D. Those states are defined in the OSPF RFC 2328. PPP also has built-in security mechanisms. Frame Relay Answer: B Explanation: PPP: Provides router-to-router and host-to-network connections over synchronous and asynchronous circuits. section 10.com/c/en/us/support/docs/ip/open-shortest-path-firstospf/13685-13. and Full. Exstart. Exchange.When a router undergoes the exchange protocol within OSPF. PPP was designed to work with several network layer protocols. WAN Technologies Question No : 163 . PPP C.1. X.cisco.(Topic 4) Which Layer 2 protocol encapsulation type supports synchronous and asynchronous circuits and has built-in security mechanisms? A. exstart state > exchange state > loading state > full state C. exstart state > loading state > exchange state > full state B. loading state > exchange state > full state > exstart state Answer: B Explanation: When OSPF adjacency is formed. including IP. HDLC B.

The mapping between DLCI 100 and the end station IP address 172.16. With Inverse ARP. Dynamic address mapping is enabled by default for all protocols enabled on a physical interface. If the Frame Relay environment supports LMI autosensing and Inverse ARP. no static address mapping is required. Answer: E Explanation: Inverse Address Resolution Protocol (Inverse ARP) was developed to provide a mechanism for dynamic DLCI to Layer 3 address maps. Inverse ARP works much the same way Address Resolution Protocol (ARP) works on a LAN. The Serial0/0 interface acquired the IP address of 172. the router knows the Layer 2 address which is the DLCI. but needs to know the remote Layer 3 IP address.16. Therefore. with ARP. the device knows the Layer 3 IP address and needs to know the remote data link MAC address. D.1 from a DHCP server. B. E. it updates its DLCI-to-Layer 3 address mapping table. When using dynamic address mapping.(Topic 4) Refer to the exhibit.1 was learned through Inverse ARP.3. The Serial0/0 interface is passing traffic. Once the requesting router receives an Inverse ARP response.3. What is the meaning of the term dynamic as displayed in the output of the show framerelay map command shown? A.Question No : 164 . The DLCI 100 was dynamically allocated by the router. dynamic address mapping takes place automatically. The DLCI 100 will be dynamically changed as required to adapt to changes in the Frame Relay cloud. However. Inverse ARP requests a next-hop protocol address for each active PVC. C. 148 .

LPC negotiates link and PPP parameters to dynamically configure the data link layer of a PPP connection. and multilink options. increased security E. callback. Common LCP options include the PPP MRU. the authentication protocol. scalability F.E Explanation: IPsec offer a number of advantages over point to point WAN links.(Topic 4) What are three reasons that an organization with multiple branch offices and roaming users might implement a Cisco VPN solution instead of point-to-point WAN links? (Choose three.Question No : 165 . reduced latency Answer: A.D. NCP B. LCP E. compression of PPP header fields.(Topic 4) Which PPP subprotocol negotiates authentication options? A. DLCI Answer: D Explanation: The PPP Link Control Protocol (LCP) is documented in RFC 1661. particularly when 149 . better throughput C.) A. reduced cost B. Question No : 166 . broadband incompatibility D. SLIP D. ISDN C.

host A 192.168.17.168. increased security since all traffic is encrypted. Other types of access from host B to the Finance Web Server should be blocked. The Public Web Server in the Server LAN has been assigned an address of 172. The Core connection uses an IP address of 198.168.201.22.254.237. This access list can contain no more than three statements that meet these requirements. All hosts in the Core and on local LAN should be able to access the Public Web Server.22.168.132. All access from hosts in the Core or local LAN to the Finance Web Server should be blocked.201. All passwords have been temporarily set to “cisco”.201.multiple locations are involved. Question No : 167 CORRECT TEXT . The computers in the Hosts LAN have been assigned addresses of 192. These include reduced cost.201.1 – 192.168. You have been tasked to create and apply a numbered access list to a single outbound interface.2 host C 192.201.4 The Finance Web Server has been assigned an address of 172.65.18.201. The requirements are: Host B should be able to use a web browser (HTTP) to access the Finance Web Server.168.(Topic 4) A corporation wants to add security to its network.237.1 host B 192. Access to the router CLI can be gained by clicking on the appropriate host. 150 .18.3 host D 192. and increased scalability as s single WAN link can be used to connect to all locations in a VPN. where as a point to point link would need to be provisioned to each location.

151 .

152 .

34 PM.24.png 153 . To see which interface this is. Explanation: We should create an access-list and apply it to the interface that is connected to the Server LAN because it can filter out traffic from both S2 and Core networks. use the “show ip interface brief” command: Macintosh HD:Users:danielkeller:Desktop:Screen Shot 2015-11-17 at 3.Answer: Please check the below explanation for all details.

109. This can be accomplished with one command (which we need to do as our ACL needs to be no more than 3 lines long). In the address box type http://172. we know that the servers are located on the fa0/1 interface. repeat to make sure they can reach the public server at 172.109.109. Then.22.22.18 any Finally. our next two instructions are these: Other types of access from host B to the Finance Web Server should be blocked.22.17 eq 80 Then.22.109.18) Corp1(config)#access-list 100 permit ip host 172. so our first line is this: Corp1(config)#access-list 100 permit tcp host 192. just click on host B to open its web browser. If your configuration is correct then you can access it. C and D) and check to make sure you can’t access Finance Web Server from these hosts.18.2 to the Finance Web Server 172.17 to check if you are allowed to access Finance Web Server or not.125.17 Our last instruction is to allow all hosts in the Core and on the local LAN access to the Public Web Server (172.109.17 via HTTP (port 80). All access from hosts in the Core or local LAN to the Finance Web Server should be blocked.From this.22. Finally.109. To verify. apply this access-list to Fa0/1 interface (outbound direction) Corp1(config)#interface fa0/1 Corp1(config-if)#ip access-group 100 out Notice: We have to apply the access-list to Fa0/1 interface (not Fa0/0 interface) so that the access-list can filter traffic coming from both the LAN and the Core networks.109. Click on other hosts (A.168. blocking all other access to the finance web server: Corp1(config)#access-list 100 deny ip any host 172. Corp1#configure terminal Our access-list needs to allow host B – 192.22.22.168125. so we will place our numbered access list here in the outbound direction.2 host 172. save the configuration Corp1(config-if)#end Corp1#copy running-config startup-config 154 .

respectively. just press Enter to use it). Question No : 169 .Question No : 168 . Cisco. The former is often used to connect two Cisco routers while the latter is used to connect a Cisco router to a non-Cisco router. and Q933a. and ITU Q933-A (Annex A) LMI types. Which of the following procedures are required to accomplish this task? (Choose three. Note: Three LMI options are supported by Cisco routers are ansi. They represent the ANSI Annex D. which is in conformance with RFC 1490 and RFC 2427. You can test with your Cisco router when typing the command Router(config-if)#encapsulation frame-relay ? on a WAN link. HDLC Answer: A Explanation: Cisco supports two Frame Relay encapsulation types: the Cisco encapsulation and the IETF Frame Relay encapsulation.) 155 . Below is the output of this command (notice Cisco is the default encapsulation so it is not listed here. HDLC is a WAN protocol same as Frame-Relay and PPP so it is not a Frame Relay encapsulation type. Q9333-A Annex A D. Cisco.(Topic 4) Which encapsulation type is a Frame Relay encapsulation type that is supported by Cisco routers? A.(Topic 4) It has become necessary to configure an existing serial interface to accept a second Frame Relay virtual circuit. IETF B. ANSI Annex D C.

F. (Not all acronyms are used.) Answer: 156 . Disable split horizon to prevent routing loops between the subinterface networks.(Topic 4) Drag the Frame Relay acronym on the left to match its definition on the right. Create the virtual interfaces with the interface command. Encapsulate the physical interface with multipoint PPP.C. C.D Explanation: For multiple PVC’s on a single interface. Each subinterface will then have its own IP address. Configure static Frame Relay map entries for each subinterface network. you must use subinterfaces. E. with each subinterface configured for each PVC. Configure each subinterface with its own IP address. Question No : 170 DRAG DROP .A. D. B. Answer: A. Remove the IP address from the physical interface. and no IP address will be assigned to the main interface.

Question No : 171 - (Topic 4)
Users have been complaining that their Frame Relay connection to the corporate site is
very slow. The network administrator suspects that the link is overloaded.

Based on the partial output of the Router# show frame relay pvc command shown in the
graphic, which output value indicates to the local router that traffic sent to the corporate site
is experiencing congestion?
A. DLCI = 100
B. last time PVC status changed 00:25:40
C. in BECN packets 192
D. in FECN packets 147
E. in DE packets 0
Answer: C
Explanation:
If device A is sending data to device B across a Frame Relay infrastructure and one of the
intermediate Frame Relay switches encounters congestion, congestion being full buffers,
over-subscribed port, overloaded resources, etc, it will set the BECN bit on packets being
returned to the sending device and the FECN bit on the packets being sent to the receiving

157

device.

Question No : 172 - (Topic 4)
What is the purpose of Inverse ARP?
A. to map a known IP address to a MAC address
B. to map a known DLCI to a MAC address
C. to map a known MAC address to an IP address
D. to map a known DLCI to an IP address
E. to map a known IP address to a SPID
F. to map a known SPID to a MAC address
Answer: D
Explanation:
Dynamic address mapping relies on the Frame Relay Inverse Address Resolution Protocol
(Inverse ARP), defined by RFC 1293, to resolve a next hop network protocol (IP) address
to a local DLCI value. The Frame Relay router sends out Inverse ARP requests on its
Frame Relay PVC to discover the protocol address of the remote device connected to the
Frame Relay network. The responses to the Inverse ARP requests are used to populate an
address-to-DLCI mapping table on the Frame Relay router or access server. The router
builds and maintains this address-to-DLCI mapping table, which contains all resolved
Inverse ARP requests, including both dynamic and static mapping entries.

Question No : 173 - (Topic 4)
What occurs on a Frame Relay network when the CIR is exceeded?
A. All TCP traffic is marked discard eligible.
B. All UDP traffic is marked discard eligible and a BECN is sent.
C. All TCP traffic is marked discard eligible and a BECN is sent.
D. All traffic exceeding the CIR is marked discard eligible.

158

Answer: D
Explanation:
Committed information rate (CIR): The minimum guaranteed data transfer rate agreed to by
the Frame Relay switch. Frames that are sent in excess of the CIR are marked as discard
eligible (DE) which means they can be dropped if the congestion occurs within the Frame
Relay network.
Note: In the Frame Relay frame format, there is a bit called Discard eligible (DE) bit that is
used to identify frames that are first to be dropped when the CIR is exceeded.

Question No : 174 - (Topic 4)
Refer to the exhibit.

In the Frame Relay network, which IP addresses would be assigned to the interfaces with
point-to-point PVCs?
A. DLCI 16: 192.168.10.1 /24
DLCI 17: 192.168.10.1 /24
DLCI 99: 192.168.10.2 /24
DLCI 28: 192.168.10.3 /24
B. DLCI 16: 192.168.10.1 /24
DLCI 17: 192.168.11.1 /24
DLCI 99: 192.168.12.1 /24
DLCI 28: 192.168.13.1 /24
159

C. DLCI 16: 192.168.10.1 /24
DLCI 17: 192.168.11.1 /24
DLCI 99: 192.168.10.2 /24
DLCI 28: 192.168.11.2 /24
D. DLCI 16: 192.168.10.1 /24
DLCI 17: 192.168.10.2 /24
DLCI 99: 192.168.10.3 /24
DLCI 28: 192.168.10.4 /24
Answer: C
Explanation:
With point to point PVC’s, each connection needs to be in a separate subnet. The R2-R1
connection (DLCI 16 to 99) would have each router within the same subnet. Similarly, the
R3-R1 connection would also be in the same subnet, but it must be in a different one than
the R2-R1 connection.

Question No : 175 - (Topic 4)
The output of the show frame-relay pvc command shows "PVC STATUS = INACTIVE".
What does this mean?
A. The PVC is configured correctly and is operating normally, but no data packets have
been detected for more than five minutes.
B. The PVC is configured correctly, is operating normally, and is no longer actively seeking
the address of the remote router.
C. The PVC is configured correctly, is operating normally, and is waiting for interesting
traffic to trigger a call to the remote router.
D. The PVC is configured correctly on the local switch, but there is a problem on the
remote end of the PVC.
E. The PVC is not configured on the local switch.
Answer: D
Explanation:
The PVC STATUS displays the status of the PVC. The DCE device creates and sends the
report to the DTE devices. There are 4 statuses:
+ ACTIVE: the PVC is operational and can transmit data
+ INACTIVE: the connection from the local router to the switch is working, but the
160

connection to the remote router is not available
+ DELETED: the PVC is not present and no LMI information is being received from the
Frame Relay switch
+ STATIC: the Local Management Interface (LMI) mechanism on the interface is disabled
(by using the “no keepalive” command). This status is rarely seen so it is ignored in some
books.

Question No : 176 - (Topic 4)
Which two options are valid WAN connectivity methods? (Choose two.)
A. PPP
B. WAP
C. DSL
D. L2TPv3
E. Ethernet
Answer: A,C
Explanation:
The Point-to-Point Protocol (PPP) provides a standard method for transporting multiprotocol datagrams over point-to-point links. PPP was originally emerged as an
encapsulation protocol for transporting IP traffic between two peers. It is a data link layer
protocol used for WAN connections.
DSL is also considered a WAN connection, as it can be used to connect networks, typically
when used with VPN technology.

Question No : 177 - (Topic 4)
Which command allows you to verify the encapsulation type (CISCO or IETF) for a Frame
Relay link?
A. show frame-relay lmi
B. show frame-relay map
161

C. show frame-relay pvc
D. show interfaces serial
Answer: B
Explanation:
When connecting Cisco devices with non-Cisco devices, you must use IETF4
encapsulation on both devices. Check the encapsulation type on the Cisco device with the
show frame-relay map exec command.

Question No : 178 - (Topic 4)
A network administrator needs to configure a serial link between the main office and a
remote location. The router at the remote office is a non-Cisco router. How should the
network administrator configure the serial interface of the main office router to make the
connection?
A. Main(config)# interface serial 0/0
Main(config-if)# ip address 172.16.1.1 255.255.255.252
Main(config-if)# no shut
B. Main(config)# interface serial 0/0
Main(config-if)# ip address 172.16.1.1 255.255.255.252
Main(config-if)# encapsulation ppp
Main(config-if)# no shut
C. Main(config)# interface serial 0/0
Main(config-if)# ip address 172.16.1.1 255.255.255.252
Main(config-if)# encapsulation frame-relay
Main(config-if)# authentication chap
Main(config-if)# no shut
D. Main(config)# interface serial 0/0
Main(config-if)#ip address 172.16.1.1 255.255.255.252
Main(config-if)#encapsulation ietf
Main(config-if)# no shut
Answer: B
Explanation:
With serial point to point links there are two options for the encapsulation. The default,
HDLC, is Cisco proprietary and works only with other Cisco routers. The other option is

162

PPP which is standards based and supported by all vendors.

Question No : 179 - (Topic 4)
What is the result of issuing the frame-relay map ip 192.168.1.2 202 broadcast command?
A. defines the destination IP address that is used in all broadcast packets on DCLI 202
B. defines the source IP address that is used in all broadcast packets on DCLI 202
C. defines the DLCI on which packets from the 192.168.1.2 IP address are received
D. defines the DLCI that is used for all packets that are sent to the 192.168.1.2 IP address
Answer: D
Explanation:
This command identifies the DLCI that should be used for all packets destined to the
192.168.1.2 address. In this case, DLCI 202 should be used.

Question No : 180 - (Topic 4)
Which command is used to enable CHAP authentication, with PAP as the fallback method,
on a serial interface?
A. Router(config-if)# ppp authentication chap fallback ppp
B. Router(config-if)# ppp authentication chap pap
C. Router(config-if)# authentication ppp chap fallback ppp
D. Router(config-if)# authentication ppp chap pap
Answer: B
Explanation:
This command tells the router first to use CHAP and then go to PAP if CHAP isn't
available.

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D. status defined.C Explanation: Subinterfaces are used for point to point frame relay connections. C.4. broadcast. E.1 dlci 401(0x191.(Topic 4) Which two statistics appear in show frame-relay map output? (Choose two.4.) A. the number of BECN packets that are received by the router B. They emulate leased lines. the IP address of the local router Answer: B. They require the use of NBMA options when using OSPF.) A.0x6430). 164 . dynamic.4.0x6410). They create split-horizon issues. Answer: B. the value of the local DLCI C.Question No : 181 . the number of FECN packets that are received by the router D. They require a unique subnet within a routing domain. Remember. Question No : 182 . B.3 dlci 403(0x193.(Topic 4) What are two characteristics of Frame Relay point-to-point subinterfaces? (Choose two. the status of the PVC that is configured on the router E..4. They are ideal for full-mesh topologies. you cannot assign multiple interfaces in a router that belong to the same IP subnet. dynamic. emulating virtual point to point leased lines. active Serial0/0 (up): ip 10.D Explanation: Sample “show frame-relay map” output: R1#sh frame map Serial0/0 (up): ip 10. Each subinterface requires a unique IP address/subnet.

status defined.4. active Serial0/0 (up): ip 10. show frame-relay lmi C..4. CHAP uses a two-way handshake.(Topic 4) Which two statements about using the CHAP authentication mechanism in a PPP link are true? (Choose two. broadcast.4.4 dlci 401(0x191. show frame-relay map D. show frame-relay pvc B.broadcast.4 dlci 401(0x191. active Question No : 184 ..0x6410). show frame relay end-to-end Answer: C Explanation: Sample “show frame-relay map” output: R1#sh frame map Serial0/0 (up): ip 10. active Serial0/0 (up): ip 10. 165 . static. status defined. broadcast.4. status defined. CISCO.. C. active Question No : 183 . B.4.4. dynamic. active Serial0/0 (up): ip 10.3 dlci 403(0x193. static.4.1 dlci 401(0x191. CHAP uses a three-way handshake. dynamic.(Topic 4) What command is used to verify the DLCI destination address in a Frame Relay static configuration? A. CISCO.0x6410).4.0x6410).) A.0x6430). status defined. status defined. CHAP authentication periodically occurs after link establishment.

D. The IP address 10. Question No : 185 . C. to be forwarded across the PVC.16. Answer: E Explanation: Broadcast is added to the configurations of the frame relay. CHAP periodically verifies the identity of the client by using a three-way handshake. so the PVC supports broadcast. 102 is the remote DLCI that will receive the information.121.(Topic 4) The command frame-relay map ip 10. Answer: B. allowing the routing protocol updates that use the broadcast update mechanism to be forwarded across itself.8 102 broadcast was entered on the router. CHAP authentication is performed only upon link establishment. This happens at the time of establishing the initial link (LCP). B. CHAP authentication passwords are sent in plaintext. such as RIP updates. This command should be executed from the global configuration mode.16. The broadcast option allows packets. Question No : 186 . E.121. The verification is based on a shared secret (such as the client user's password). CHAP has no protection from playback attacks.D. This command is required for all Frame Relay configurations. Which of the following statements is true concerning this command? A.(Topic 4) 166 .8 is the local router port used to forward data.C Explanation: CHAP is an authentication scheme used by Point to Point Protocol (PPP) servers to validate the identity of remote clients. and may happen again at any time afterwards. E. F.

0.100.RouterA is unable to reach RouterB.0. But we guess there is a typo in the output. The “frame-relay map ip” statement is correct thus none of the four answers above is correct. That makes answer C correct. incorrect map statement D.1 255. what is the most likely cause of the problem? A.100.(Topic 4) At which layer of the OSI model does PPP perform? A. incorrect IP address Answer: C Explanation: First we have to say this is an unclear question and it is wrong.16. Layer 3 C.2 255.0 command should be “ip address 172. Layer 2 B. Maybe the “ip address 172. Both routers are running IOS version 12. incorrect LMI configuration C.0. Layer 5 Answer: A Explanation: 167 .255. Layer 4 D. After reviewing the command output and graphic. incorrect bandwidth configuration B.255.0.16. Question No : 187 .

B. It cannot be used on R3 or R1. DLCI 17 is the Layer 2 address used by R2 to describe a PVC to R3. PPP was originally emerged as an encapsulation protocol for transporting IP traffic between two peers. C. Frame Relay is strictly a Layer 2 protocol suite. DLCI 17 describes a PVC on R2. Answer: C Explanation: DLCI-Data Link Connection Identifier Bits: The DLCI serves to identify the virtual connection so that the receiving end knows which information connection a frame belongs to. D. Which statement describes DLCI 17? A. 168 . DLCI 17 describes the ISDN circuit between R2 and R3. Note that this DLCI has only local significance.The Point-to-Point Protocol (PPP) provides a standard method for transporting multiprotocol datagrams over point-to-point links.(Topic 4) Refer to the exhibit. DLCI 17 describes the dial-up circuit from R2 and R3 to the service provider. It is a data link layer protocol (layer 2 in the OSI model) Question No : 188 .

An example of an IPv6 address is 2001:0db8:85a3:0000:0000:8a2e:0370:7334. L2TP C. 2031::130F::9C0:876A:130B D. PPTP Answer: C Explanation: IPSec is a framework of open standards that provides data confidentiality.Question No : 189 . The groups are separated by colons (:). each group representing 16 bits (two octets). 2031:0:130F::9C0:876A:130B Answer: D Explanation: An IPv6 address is represented as eight groups of four hexadecimal digits. IPSec can be used to protect one or more data flows between IPSec peers. IPsec D. and data authentication between participating peers at the IP layer. Infrastructure Services Question No : 190 . Topic 5. to provide secure end-to-end communications? A.(Topic 5) Which IPv6 address is valid? A. 2001:0db8:0000:130F:0000:0000:08GC:140B B. The leading 0’s in a group 169 . 2001:0db8:0:130H::87C:140B C. data integrity.(Topic 4) Which protocol is an open standard protocol framework that is commonly used in VPNs. RSA B.

20.128 E.1.10 IP address as their default gateway. Which three values could be used for the configuration of these hosts? (Choose three. host B IP address: 192. host A default gateway: 192.78 D.) A.1. host B default gateway: 192. but this can only be done once in an IP address. A network administrator is adding two new hosts to SwitchA. Question No : 191 . each hosts must also be in the same subnet as fa0/0.C.64 C. host A IP address: 192.168.168.168. host B IP address: 192.1. Which means each host in the VLAN must corresponds with the VLAN configured on the sub-interfaces.168.129 F.168.(Topic 5) Refer to the exhibit.F Explanation: It’s a “router-on-a-stick” configuration.190 Answer: A.1.10 IP – same with hosts in VLAN 20.79 B. 170 . host A IP address: 192.1. VLAN 10 is configured on fa0/0.10 and VLAN 20 on fa0/0.1.168. So each hosts in VLAN 10 must use fa0/0.can be collapsed using ::.

Reference: http://www. set D. To enable the SNMP agent.1. AES E.130 /26: 192. as needed.190.168.So find out the usable IP addresses on each sub-interfaces – for 192.F Explanation: The SNMP framework consists of three parts: •An SNMP manager — The system used to control and monitor the activities of network devices using SNMP. Host A (using port 6 – VLAN 10) must use IP 192.168.79.1.com/c/en/us/td/docs/switches/datacenter/nexus1000/sw/4_0_4_s_v_1_3/s ystem_management/configuration/guide/n1000v_system/n1000v_system_10snmp. Question No : 192 .168.(Topic 5) What are three components that comprise the SNMP framework? (Choose three. default gateway 192.94 and for 192.65 – .168. SNMP is defined in RFCs 3411 to 3418.html 171 . you must define the relationship between the manager and the agent. to managing systems.78 /27: 192.1. supervisor F. MIB B.168.1.168. •A managed information base (MIB) — The collection of managed objects on the SNMP agent.1. Cisco Nexus 1000V supports the agent and MIB.78.190.) A. agent C.168. default gateway 192.128 – .1. •An SNMP agent — The software component within the managed device that maintains the data for the device and reports these data. manager Answer: A.B.130.1.168.1.cisco. Host B (using port 9 – VLAN 20) must use IP 192.

(Topic 5) What levels will be trapped if the administrator executes the command router(config)# logging trap 4 (Choose four) A. to allow two or more connections to be initiated from the outside. This is typically done to allow incoming connections from the outside (Internet) to the inside. D. Question No : 194 . they are always present in the NAT table even if they are not actively in use.Question No : 193 . Emergency B.C Explanation: Static NAT is to map a single outside IP address to a single inside IP address. Since these are static. They can be configured with access lists.) A. They require no inside or outside interface markings because addresses are statically defined. C.D. Answer: A. They allow connections to be initiated from the outside. Notice C. They are always present in the NAT table. Error E. Warning Answer: A.(Topic 5) Which two statements about static NAT translations are true? (Choose two. B.C.E Explanation: The Message Logging is divided into 8 levels as listed below: Level Keyword Description 172 . Alert D.

IP address: 192.255.168.255.255.255. but significant. For example.168.168.20. IP address: 192.14 Subnet Mask: 255.25 Answer: C Explanation: 173 . IP address: 192.20.240 Default Gateway: 192.255.255. Which of the following should be entered into the IP properties box for the sales server? A.168. alerts.1 C.168. that level and all the higher levels will be logged.25 D.30 Subnet Mask: 255.255. all the logging of emergencies.0 Default Gateway: 192.9 B.20.240 Default Gateway: 192.24/29.168. warnings will be logged. the router is assigned the first usable host address while the sales server is given the last usable host address.255. IP address: 192.168. by using the “logging trap 4 command.20.168.(Topic 5) An administrator must assign static IP addresses to the servers in a network.20.20.248 Default Gateway: 192.255.17 E.20. Question No : 195 . critical.20. IP address: 192.254 Subnet Mask: 255.255. conditions exist 6 informational Informational messages 7 debugging Debugging messages If you specify a level with the “logging trap level” command.30 Subnet Mask: 255.20.0 emergencies System is unusable 1 alerts Immediate action is needed 2 critical Critical conditions exist 3 errors Error conditions exist 4 warnings Warning conditions exist 5 notification Normal.20. For network 192.168.168.30 Subnet Mask: 255.168.248 Default Gateway: 192. errors.20.

A conflict of IP addresses happens. designated IP address to the DHCP server Answer: A.24.) A. Question No : 197 . because other public routers can use the same range. Only the ISP router will have the capability to access the public network.(Topic 5) When a DHCP server is configured.30 (used for the sales server). Question No : 196 .For the 192.24/29 network. broadcast address on the network C.B Explanation: 174 . IP address used by the interfaces E. D.168. The NAT process will be used to translate this address to a valid IP address.20. Answer: A Explanation: Private RFC 1918 IP addresses are meant to be used by organizations locally within their own network only.25 (router) – 192. and cannot be used globally for Internet use. IP address leased to the LAN D. which two IP addresses should never be assignable to hosts? (Choose two. manually assigned address to the clients F.168. B.24. C. Addresses in a private range will not be routed on the Internet backbone. the usable hosts are 192.(Topic 5) What will happen if a private IP address is assigned to a public interface connected to an ISP? A.168. network or subnetwork IP address B.

Answer: B. GLBP supports up to 1024 virtual routers.(Topic 5) Refer to the exhibit. GLBP supports clear text and MD5 password authentication between GLBP group members. GLBP can load share traffic across a maximum of four routers. B.) A.0.Network or subnetwork IP address (for example 11.1. Question No : 198 . GLBP elects two AVGs and two standby AVGs for redundancy.2.0/8 or 13. you will receive an error message saying that they can’t be assignable. 175 .0.0. GLBP supports up to eight virtual forwarders per GLBP group.(Topic 5) What are three benefits of GLBP? (Choose three. GLBP is an open source standardized protocol that can be used with multiple vendors.1.0/16) and broadcast address (for example 23. E. C.255/24) should never be assignable to hosts. F.D. D.E Question No : 199 . When try to assign these addresses to hosts.

FF02::1 176 . The number 1 referred to in the ip nat inside source command references access-list number 1. the Serial0/0 interface address will not support the NAT configuration as shown. ExternalRouter must be configured with static routes to networks 172. C. The configuration that is shown provides inadequate outside address space for translation of the number of inside addresses that are supported. D. Answer: C Explanation: The “list 1 refers to the access-list number 1. Because of the addressing on interface FastEthernet0/1.What statement is true of the configuration for this network? A. Question No : 200 .16.1.2.0/24 and 172.0/24.(Topic 5) Which IPv6 address is the all-router multicast group? A.16. B.

C. FF02::3 D. F. Provide an easy management of layer 3 devices. Perform host discovery used DHCPDISCOVER message. FF02::4 Answer: B Explanation: Well-known IPv6 multicast addresses: Address Description ff02::1 All nodes on the local network segment ff02::2 All routers on the local network segment Question No : 201 .) A. It involves clients and a server operating in a client-server model. Set the IP gateway to be used by the network.B. Assign and renew IP address from the default pool.(Topic 5) Which two tasks does the Dynamic Host Configuration Protocol perform? (Choose two. FF02::2 C. D. DHCP servers assigns IP addresses from a pool of addresses and also assigns other parameters such as DNS and default gateways to hosts. Monitor IP performance using the DHCP server. Answer: C. 177 . E. Configure IP address parameters from DHCP server to a host. B.F Explanation: The Dynamic Host Configuration Protocol (DHCP) is a network protocol used to configure devices that are connected to a network (known as hosts) so they can communicate on that network using the Internet Protocol (IP).

Reference: http://www. CatOS switches.0.ciscopress.com/articles/article.0 /22 C. 10. local5 C.0. Moreover. and VPN 3000 Concentrators use facility local7 while Cisco PIX Firewalls use local4 to send syslog messages.0. 10.0 /23 D.0.0.0 /24 178 . 10. 10.0.(Topic 5) What is the default Syslog facility level? A.(Topic 5) Refer to the exhibit.Question No : 202 . What is the most appropriate summarization for these routes? A. local4 B. local7 Answer: D Explanation: By default.0.0. local6 D. most Cisco devices provide options to change the facility level from their default value.asp?p=426638 Question No : 203 .0 /21 B. Cisco IOS devices.

0 networks. and only those four networks.0.0. multicast D. A packet sent to an anycast address is delivered to just one of the member interfaces. allcast Answer: A. The Internet Protocol delivers packets sent to a unicast address to that specific interface. anycast B.) A. and differ only by their presence in the network at multiple points. Almost any unicast address can be employed as an anycast address. A multicast address is also used by multiple hosts. and multicast addressing. Question No : 205 . anycast addressing. podcast E. which acquire the multicast address destination by participating in the multicast distribution protocol among the network routers. broadcast C.(Topic 5) 179 .0. 10.0. typically the nearest host. according to the routing protocol’s definition of distance.C Explanation: IPv6 addresses are classified by the primary addressing and routing methodologies common in networking: unicast addressing.0. 10.0. and 10.Answer: B Explanation: The 10.0. they have the same format as unicast addresses. usually belonging to different nodes.0.(Topic 5) Which two are features of IPv6? (Choose two.0.0. Anycast addresses cannot be identified easily.1. A packet that is sent to a multicast address is delivered to all interfaces that have joined the corresponding multicast group. An anycast address is assigned to a group of interfaces. A unicast address identifies a single network interface.3.0/22 subnet mask will include the 10.2. Question No : 204 .

two or more devices support a virtual router with a fictitious MAC address and unique IP address. in which xx is the HSRP group. C. multicast. 0007.Fxxx. D.ACxx .B400. in which xxx is the HSRP group. There are four types of IPv6 addresses: unicast. E.C Explanation: A single interface may be assigned multiple addresses of any type (unicast.0C9F.01A3 B. Every IPv6 interface contains at least one loopback address.Which two of these statements are true of IPv6 address representation? (Choose two. + With HSRP version 2.5E00. There are two version of HSRP. the virtual router’s MAC address is 0000. every interface can have multiple unique local and global addresses. B. Every IPv6-enabled interface must contain at least one loopback and one link-local address. A single interface may be assigned multiple IPv6 addresses of any type.(Topic 5) What is a valid HSRP virtual MAC address? A.B301 Answer: C Explanation: With HSRP.) A.AE01 C.AC15 D. 0007.5E00. + With HSRP version 1. anycast. 0000.0c07. and broadcast. 0000. the virtual MAC address if 0000. 180 .0C07. Leading zeros in an IPv6 16 bit hexadecimal field are mandatory. Answer: B. Optionally. anycast. The first 64 bits represent the dynamically created interface ID. Reference: IPv6 Addressing at a Glance – Cisco PDF Question No : 206 . multicast).

Tunnels are used to carry one protocol inside another. With dual stack. use DHCPv6 to map IPv4 addresses to IPv6 addresses Answer: A.D Explanation: Several methods are used terms of migration including tunneling.73A0. in which the MAC address range from 0005. 8 D. devices are able to run IPv4 and IPv6 together and if IPv6 communication is possible that is the preferred protocol.Note: Another case is HSRP for IPv6. statically map IPv4 addresses to IPv6 addresses F.) A. while translators simply translate IPv6 packets into IPv4 packets.C. 24 B. Question No : 207 . 16 181 . 4 C.73A0. Question No : 208 . translators. configure IPv4 tunnels between IPv6 islands D. (Choose three. and dual stack. use proxying and translation to translate IPv6 packets into IPv4 packets E. Hosts can simultaneously reach IPv4 and IPv6 content.0FFF.(Topic 5) How many bits are contained in each field of an IPv6 address? A.0000 through 0005. configure IPv6 directly C. Dual stack uses a combination of both native IPv4 and IPv6. enable dual-stack routing B.(Topic 5) What are three approaches that are used when migrating from an IPv4 addressing scheme to an IPv6 scheme.

Answer: D
Explanation:
An IPv6 address is represented as eight groups of four hexadecimal digits, each group
representing 16 bits (two octets). The groups are separated by colons (:). An example of an
IPv6 address is 2001:0db8:85a3:0000:0000:8a2e:0370:7334.

Question No : 209 - (Topic 5)
You have been asked to come up with a subnet mask that will allow all three web servers
to be on the same network while providing the maximum number of subnets. Which
network address and subnet mask meet this requirement?
A. 192.168.252.0 255.255.255.252
B. 192.168.252.8 255.255.255.248
C. 192.168.252.8 255.255.255.252
D. 192.168.252.16 255.255.255.240
E. 192.168.252.16 255.255.255.252
Answer: B
Explanation:
A subnet mask of 255.255.255.248 will allow for up to 6 hosts to reside in this network. A
subnet mask of 255.255.255.252 will allow for only 2 usable IP addresses, since we cannot
use the network or broadcast address.

Question No : 210 - (Topic 5)
Refer to the diagram.

182

All hosts have connectivity with one another. Which statements describe the addressing
scheme that is in use in the network? (Choose three.)
A. The subnet mask in use is 255.255.255.192.
B. The subnet mask in use is 255.255.255.128.
C. The IP address 172.16.1.25 can be assigned to hosts in VLAN1
D. The IP address 172.16.1.205 can be assigned to hosts in VLAN1
E. The LAN interface of the router is configured with one IP address.
F. The LAN interface of the router is configured with multiple IP addresses.
Answer: B,C,F
Explanation:
The subnet mask in use is 255.255.255.128: This is subnet mask will support up to 126
hosts, which is needed.
The IP address 172.16.1.25 can be assigned to hosts in VLAN1: The usable host range in
this subnet is 172.16.1.1-172.16.1.126
The LAN interface of the router is configured with multiple IP addresses: The router will
need 2 subinterfaces for the single physical interface, one with an IP address that belongs
in each VLAN.

Question No : 211 - (Topic 5)

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Which three features are added in SNMPv3 over SNMPv2?
A. Message Integrity
B. Compression
C. Authentication
D. Encryption
E. Error Detection
Answer: A,C,D
Explanation:
Cisco IOS software supports the following versions of SNMP:
+ SNMPv1 – The Simple Network Management Protocol: A Full Internet Standard, defined
in RFC 1157. (RFC 1157 replaces the earlier versions that were published as RFC 1067
and RFC 1098.) Security is based on community strings.
+ SNMPv2c – The community-string based Administrative Framework for SNMPv2.
SNMPv2c (the “c” stands for “community”) is an Experimental Internet Protocol defined in
RFC 1901, RFC 1905, and RFC 1906. SNMPv2c is an update of the protocol operations
and data types of SNMPv2p (SNMPv2 Classic), and uses the community-based security
model of SNMPv1.
+ SNMPv3 – Version 3 of SNMP. SNMPv3 is an interoperable standards-based protocol
defined in RFCs 2273 to 2275. SNMPv3 provides secure access to devices by a
combination of authenticating and encrypting packets over the network. The security
features provided in SNMPv3 are as follows:
– Message integrity: Ensuring that a packet has not been tampered with in transit.
– Authentication: Determining that the message is from a valid source.
– Encryption: Scrambling the contents of a packet prevent it from being learned by an
unauthorized source.

Question No : 212 - (Topic 5)
The network administrator needs to address seven LANs. RIP version 1 is the only routing
protocol in use on the network and subnet 0 is not being used. What is the maximum
number of usable IP addresses that can be supported on each LAN if the organization is
184

using one class C address block?
A. 8
B. 6
C. 30
D. 32
E. 14
F. 16
Answer: C
Explanation:
Since there is one class C network that means 256 total IP addresses. Since we need 7
LAN blocks and we cannot use the first one (subnet 0) we take 256/8=32 hosts. However,
since we need to reserve the network and broadcast addresses for each of these subnets,
only 30 total IP addresses are usable.

Question No : 213 - (Topic 5)
How is an EUI-64 format interface ID created from a 48-bit MAC address?
A. by appending 0xFF to the MAC address
B. by prefixing the MAC address with 0xFFEE
C. by prefixing the MAC address with 0xFF and appending 0xFF to it
D. by inserting 0xFFFE between the upper three bytes and the lower three bytes of the
MAC address
E. by prefixing the MAC address with 0xF and inserting 0xF after each of its first three
bytes
Answer: D
Explanation:
The modified EUI-64 format interface identifier is derived from the 48-bit link-layer (MAC)
address by inserting the hexadecimal number FFFE between the upper three bytes (OUI
field) and the lower three bytes (serial number) of the link layer address.

185

Question No : 214 - (Topic 5)
Refer to the exhibit.

What is the cause of the Syslog output messages?
A. The EIGRP neighbor on Fa0/1 went down due to a failed link.
B. The EIGRP neighbor connected to Fa0/1 is participating in a different EIGRP process,
causing the adjacency to go down.
C. A shut command was executed on interface Fa0/1, causing the EIGRP adjacency to go
down.
D. Interface Fa0/1 has become error disabled, causing the EIGRP adjacency to go down.
Answer: C
Explanation:
The first lines of the message show that a configuration change was made, and that the
fa0/1 interface changed to a state of administratively down. This can only be done by
issuing the shutdown command. The last line indicates that this caused an EIGRP neighbor
adjacency to go down.

Question No : 215 - (Topic 5)
What command instructs the device to timestamp Syslog debug messages in milliseconds?
A. service timestamps log datetime localtime<input type
B. service timestamps debug datetime msec<input type
C. service timestamps debug datetime localtime<input type
D. service timestamps log datetime msec
Answer: B
Explanation:

186

Enable millisecond (msec) timestamps using the service timestamps command:
router(config)#service timestamps debug datetime msec.
router(config)#service timestamps log datetime msec The “service timestamps debug”.
command configures the system to apply a time stamp to debugging messages. The timestamp format for datetime is MMM DD HH:MM:SS, where MMM is the month, DD is the
date, HH is the hour (in 24-hour notation), MM is the minute, and SS is the second. With
the additional keyword msec, the system includes milliseconds in the time stamp, in the
format HH:DD:MM:SS.mmm, where .mmm is milliseconds.

Question No : 216 - (Topic 5)
Which two statements describe characteristics of IPv6 unicast addressing? (Choose two.)
A. Global addresses start with 2000::/3.
B. Link-local addresses start with FE00:/12.
C. Link-local addresses start with FF00::/10.
D. There is only one loopback address and it is ::1.
E. If a global address is assigned to an interface, then that is the only allowable address for
the interface.
Answer: A,D
Explanation:
Below is the list of common kinds of IPv6 addresses:

187

Question No : 217 - (Topic 5)
Which command enables IPv6 forwarding on a Cisco router?
A. ipv6 local
B. ipv6 host
C. ipv6 unicast-routing
D. ipv6 neighbor
Answer: C
Explanation:
To enable IPv6 routing on the Cisco router use the following command:
ipv6 unicast-routing
If this command is not recognized, your version of IOS does not support IPv6.

Question No : 218 - (Topic 5)
Which statement describes the process of dynamically assigning IP addresses by the
DHCP server?
A. Addresses are allocated after a negotiation between the server and the host to
determine the length of the agreement.
B. Addresses are permanently assigned so that the hosts uses the same address at all
times.
C. Addresses are assigned for a fixed period of time, at the end of the period, a new
request for an address must be made.
D. Addresses are leased to hosts, which periodically contact the DHCP server to renew the
lease.
Answer: D
Explanation:
The DHCP lifecycle consists of the following:
Allocation: A client begins with no active lease, and hence, no DHCP-assigned
address. It acquires a lease through a process of allocation.
188

Renewal: After a certain portion of the lease time has expired. it will contact the DHCP server that granted it the lease to confirm the lease and acquire operating parameters. SNMP Agent E. trying to extend its current lease with any server that will allow it to do so. the client will attempt to contact the server that initially granted the lease. Release: The client may decide at any time that it no longer wishes to use the IP address it was assigned. MIB B. and may terminate the lease. for example. Question No : 219 .(Topic 5) Which three are the components of SNMP? (Choose three) A. If renewal with the original leasing server fails (because. The SNMP framework has three parts: + An SNMP manager + An SNMP agent + A Management Information Base (MIB) The SNMP manager is the system used to control and monitor the activities of network 189 . then when it reboots or starts up after being shut down. SNMP provides a standardized framework and a common language used for the monitoring and management of devices in a network. SNMP Manager C. This is sometimes called reallocation. then the client will try to rebind to any active DHCP server.Reallocation: If a client already has an address from an existing lease. Rebinding. it is similar to the full allocation process but shorter.D Explanation: SNMP is an application-layer protocol that provides a message format for communication between SNMP managers and agents. Set Answer: A. the client functions normally. SysLog Server D. Normal Operation: Once a lease is active.B. the server has been taken offline). The client is said to be bound to the lease and the address. to renew the lease so it can keep using its IP address. releasing the IP address. using its assigned IP address and other parameters during the “main part” of the lease.

Rebinding. it is similar to the full allocation process but shorter. Release: The client may decide at any time that it no longer wishes to use the IP address it was assigned.B. SysLog Server D. Renewal: After a certain portion of the lease time has expired. Normal Operation: Once a lease is active. it will contact the DHCP server that granted it the lease to confirm the lease and acquire operating parameters. the client will attempt to contact the server that initially granted the lease. then when it reboots or starts up after being shut down. This is sometimes called reallocation.(Topic 5) Which three are the components of SNMP? (Choose three) A. Question No : 219 . The SNMP framework has three parts: + An SNMP manager + An SNMP agent + A Management Information Base (MIB) The SNMP manager is the system used to control and monitor the activities of network 189 .D Explanation: SNMP is an application-layer protocol that provides a message format for communication between SNMP managers and agents. MIB B. If renewal with the original leasing server fails (because. The client is said to be bound to the lease and the address. SNMP provides a standardized framework and a common language used for the monitoring and management of devices in a network. to renew the lease so it can keep using its IP address. SNMP Manager C. the server has been taken offline). Set Answer: A. then the client will try to rebind to any active DHCP server. SNMP Agent E. for example.Reallocation: If a client already has an address from an existing lease. the client functions normally. and may terminate the lease. using its assigned IP address and other parameters during the “main part” of the lease. releasing the IP address. trying to extend its current lease with any server that will allow it to do so.

to managing systems. The agent and MIB reside on the routing device (router. A variety of network management applications are available for use with SNMP.hosts using SNMP. B514 : 82C3 :: 0029 : EC7A : EC72 C. B514 : 82C3 :: 0029 : EC7A : 0 : EC72 Answer: D Explanation: There are two ways that an IPv6 address can be additionally compressed: compressing leading zeros and substituting a group of consecutive zeros with a single double colon (::). or switch). To enable the SNMP agent on a Cisco routing device. The most common managing system is called a Network Management System (NMS). The Management Information Base (MIB) is a virtual information storage area for network management information. It is important to note that the double colon (::) can only be used once within a single IPv6 address notation. or the applications used on such a device. So. Both of these can be used in any number of combinations to notate the same address. as needed. the extra 0’s can only be compressed once. you must define the relationship between the manager and the agent. B514 : 82C3 : 0029 : EC7A : EC72 B. which consists of collections of managed objects. The term NMS can be applied to either a dedicated device used for network management. Question No : 220 . The SNMP agent is the software component within the managed device that maintains the data for the device and reports these data. B514 : 82C3 : 0029 :: EC7A : 0000 : EC72 D. access server. These features range from simple command-line applications to feature-rich graphical user interfaces (such as the CiscoWorks2000 line of products).(Topic 5) What is the alternative notation for the IPv6 address B514:82C3:0000:0000:0029:EC7A:0000:EC72? A. 190 .

56/27 C. what is the correct network address? 191 .1.168.(Topic 5) Refer to the exhibit. 192.Question No : 221 . 192.252 with a subnet mask of 255. Therefore subnet bits are 2 bits (8-6) in fourth octet. 192.1.255. A new subnet with 60 hosts has been added to the network. Which subnet address should this network use to provide enough usable addresses while wasting the fewest addresses? A.64/27 Answer: C Explanation: A subnet with 60 host is 2*2*2*2*2*2 = 64 -2 == 62 6 bits needed for hosts part.(Topic 5) Given an IP address 172.240.16.168.28. 192.0.168.64/26 D.56/26 B.168.1.1. 8bits+ 8bits+ 8bits + 2bits = /26 /26 bits subnet is 24bits + 11000000 = 24bits + 192 256 – 192 = 64 0 -63 64 – 127 Question No : 222 .

172.16. 172. the network address is 172.16. Question No : 224 .A.16. Question No : 223 .16. ::1 This is a 128bit number.31.0 C.(Topic 5) Which option is a valid IPv6 address? A.1 . 2002:7654:A1AD:61:81AF:CCC1 C. 172. 0::/10 Answer: A Explanation: In IPv6 the loopback address is written as.1? A. 2001:0000:130F::099a::12a B.28.255.172. 2000::/3 D. ::1 B. so could also be written as ::1/128.254.24.0 and the broadcast IP address is 172.0. with the first 127 bits being '0' and the 128th bit being '1'.0. It's just a single address.16. the network range is 172. FEC0:ABCD:WXYZ:0067::2A4 192 .16.16.16.16.31. 172.16.0.0 B. :: C.(Topic 5) Which IPv6 address is the equivalent of the IPv4 interface loopback address 127.0 D.0 Answer: A Explanation: For this example.16.

Question No : 225 .16. each group representing 16 bits (two octets)./21 B.0.0 and does it more efficiently than the /16 and /18 subnets.D.0. The /21 subnet will 193 . The leading 0’s in a group can be collapsed using ::.0. 2004:1:25A4:886F::1 Answer: D Explanation: An IPv6 address is represented as eight groups of four hexadecimal digits.0. 172./20 C.16.(Topic 5) Refer to the exhibit.0.0. Which address range efficiently summarizes the routing table of the addresses for router Main? A. 172.16.16.16. The groups are separated by colons (:).0. An example of an IPv6 address is 2001:0db8:85a3:0000:0000:8a2e:0370:7334.0.16. but this can only be done once in an IP address.16.0. 172. 172./16 D.0/18 Answer: B Explanation: The 172.0 – 172.16.0./20 network is the best option as it includes all networks from 172.

0.16.16. The smallest subnet mask of these 3 subnets is /18 so our summarized subnet must also 194 .32.x so our summarized subnet must be also in that form -> Only A. what summary address would be sent from router A? A.0/24 and 172.not include all the other subnets in this one single summarized address.0.0 /16 E.64. 172.0.32.0/18.x.128.16.0 /16 Answer: A Explanation: Router A receives 3 subnets: 172. Question No : 226 . 172.0 /16 B.64.16. In this VLSM addressing scheme. B or .16.0.0 /17 F. 172.0 /24 D.32. 172.0.0 /20 C. All these 3 subnets have the same form of 172. 172.16. 172.16.(Topic 5) Refer to the exhibit.0/18. 172.0.

Answer: A. Question No : 227 .g. FEFE:0345:5f1b::e14d:3d69 D. Question No : 228 . F. They may be assigned by automatic (stateless) or stateful (e. E. manual) mechanisms. SNMPv2 added the Inform protocol message to SNMP. SNMPv2 added the GetBulk protocol message to SNMP.have its subnet mask equal or smaller than /18. FE08::280e:611:a:f14f:3d69 Answer: A Explanation: In the Internet Protocol Version 6 (IPv6). SNMPv3 added the Inform protocol message to SNMP.E Explanation: 195 . -> Only answer A has these 2 conditions ->. FE80::380e:611a:e14f:3d69 B.(Topic 5) Which three statements about the features of SNMPv2 and SNMPv3 are true? (Choose three. SNMPv3 added the GetBulk protocol messages to SNMP. FE81::280f:512b:e14f:3d69 C.C. B. SNMPv2 added the GetNext protocol message to SNMP. C. The actual link local addresses are assigned with the prefix fe80::/64.) A. D. SNMPv3 enhanced SNMPv2 security features. the address block fe80::/10 has been reserved for link-local unicast addressing.(Topic 5) Which of these represents an IPv6 link-local address? A.

(Topic 5) A network engineer wants to allow a temporary entry for a remote user with a specific username and password so that the user can access the entire network over the Internet. To correct the security deficiencies of SNMPv1/v2. not between NMS stations and agents. Note: These two messages are carried over SNMPv3. dynamic D. reducing their utility to that of a network monitor. Question No : 229 .) InformRequest messages are generally used between NMS stations. The two additional messages are added in SNMP2 (compared to SNMPv1) GetBulkRequest The GetBulkRequest message enables an SNMP manager to access large chunks of data. InformRequest The InformRequest message allows NMS stations to share trap information. Because of these deficiencies. standard B. -> C is correct. no network control applications can be supported. -> A is correct. Agents that cannot provide values for all variables in a list will send partial information. -> E is correct. reflexive Answer: C Explanation: 196 . SNMPv3 was issued as a set of Proposed Standards in January 1998.SNMPv1/v2 can neither authenticate the source of a management message nor provide encryption. Which ACL can be used? A. it is possible for nonauthorized users to exercise SNMP network management functions. GetBulkRequest allows an agent to respond with as much information as will fit in the response PDU. many SNMPv1/v2 implementations are limited to simply a read-only capability. extended C. Without authentication. It is also possible for nonauthorized users to eavesdrop on management information as it passes from managed systems to the management system. (Traps are issued by SNMP agents when a device change occurs.

188.0/26 197 . Question No : 231 .We can use a dynamic access list to authenticate a remote user with a specific username and password. SET Answer: A. TRAP B.(Topic 5) You are working in a data center environment and are assigned the address range 10.188. etc. The authentication process is done by the router or a central access server such as a TACACS+ or RADIUS server.B Explanation: A TRAP is a SNMP message sent from one application to another (which is typically on a remote host).cisco. Their purpose is merely to notify the other application that something has happened. Which IP address range meets these requirements? A.(Topic 5) What are the alert messages generated by SNMP agents called? A. has been noticed.31. which is nothing more than an acknowledged TRAP. The configuration of dynamic ACL can be read here: http://www. GET D. SNMPv2 PDUs fixed this by introducing the notion of an INFORM. INFORM C. You are asked to develop an IP addressing plan to allow the maximum number of subnets with as many as 30 hosts each. The big problem with TRAPs is that they’re unacknowledged so you don’t actually know if the remote application received your oh-soimportant message to it.0/23. shtml Question No : 230 .com/en/US/tech/tk583/tk822/technologies_tech_note09186a0080094524.31. 10.

(Topic 5) Refer to the exhibit. The address remains in the pool until the conflict is resolved.188.0/25 C. 10. Question No : 232 . C.B. Only the IP detected by Ping is removed from the pool. E. The address will not be assigned until the administrator resolves the conflict. The address is removed from the pool until the conflict is resolved. Also the question requires the maximum number of subnets (which minimum the number of hosts-per-subnet) so /27 is the best choice.31. 10.0/28 D. Answer: A Explanation: An address conflict occurs when two hosts use the same IP address.31. the address is removed from the pool.31. D.0/29 Answer: D Explanation: Each subnet has 30 hosts < 32 = 25 so we need a subnet mask which has at least 5 bit 0s -> /27. If a conflict is detected. 198 . Which rule does the DHCP server use when there is an IP address conflict? A. DHCP checks for conflicts using ping and gratuitous ARP. 10.0/27 E. The IP will be shown. 10.188. B.31.188. During address assignment. Only the IP detected by Gratuitous ARP is removed from the pool. even after the conflict is resolved.188.

These gateways are known as active virtual forwarders (AVFs) for their virtual MAC address.(Topic 5) In a GLBP network. Each gateway assumes responsibility for forwarding packets sent to the virtual MAC address assigned to it by the AVG. B.html Question No : 234 .cisco. It ensures the best VRRP router is the virtual router master for the group.(Topic 5) Which statement describes VRRP object tracking? A. AVF B. AVG C. who is responsible for the ARP request? A.cisco.(Reference: http://www. 199 .html) Question No : 233 . Load sharing is achieved by the AVG replying to the ARP requests with different virtual MAC addresses.com/en/US/docs/ios/12_2t/12_2t15/feature/guide/ft_glbp. Standby Router Answer: B Explanation: Members of a GLBP group elect one gateway to be the active virtual gateway (AVG) for that group. The AVG is responsible for answering Address Resolution Protocol (ARP) requests for the virtual IP address. Active Router D.com/en/US/docs/ios/12_1/iproute/configuration/guide/1cddhcp. It monitors traffic flow and link utilization. Reference: http://www. Other group members provide backup for the AVG in the event that the AVG becomes unavailable. The AVG assigns a virtual MAC address to each member of the GLBP group.

Question No : 235 . D. community strings Answer: D Explanation: SNMP Versions Cisco IOS software supports the following versions of SNMP: •SNMPv1 — The Simple Network Management Protocol: A Full Internet Standard. CBC-DES D. (RFC 1157 replaces the earlier versions that were published as RFC 1067 and RFC 1098. •SNMPv3 — Version 3 of SNMP. HMAC-MD5 B. HMAC-SHA C. SNMPv2c (the "c" stands for "community") is an Experimental Internet Protocol defined in RFC 1901. defined in RFC 1157. It thwarts man-in-the-middle attacks.(Topic 5) What authentication type is used by SNMPv2? A. SNMPv3 is an interoperable standards-based protocol defined in RFCs 2273 to 2275. SNMP Security Models and Levels Model 200 . It causes traffic to dynamically move to higher bandwidth links.) Security is based on community strings. RFC 1905. •SNMPv2c — The community-string based Administrative Framework for SNMPv2. and uses the community-based security model of SNMPv1.C. SNMPv2c is an update of the protocol operations and data types of SNMPv2p (SNMPv2 Classic). Answer: B Explanation: Object tracking is the process of tracking the state of a configured object and uses that state to determine the priority of the VRRP router in a VRRP group. and RFC 1906. SNMPv3 provides secure access to devices by a combination of authenticating and encrypting packets over the network.

v3 noAuthNoPriv Username No Uses a username match for authentication. v3 authNoPriv MD5 or SHA No Provides authentication based on the HMAC-MD5 or HMAC-SHA algorithms.(Topic 5) 201 . Reference: http://www. v3 authPriv MD5 or SHA DES Provides authentication based on the HMAC-MD5 or HMAC-SHA algorithms.cisco.h tml Question No : 236 . Provides DES 56-bit encryption in addition to authentication based on the CBC-DES (DES-56) standard.Level Authentication Encryption What Happens v1 noAuthNoPriv Community String No Uses a community string match for authentication.com/c/en/us/td/docs/ios/12_2/configfun/configuration/guide/ffun_c/fcf014. v2c noAuthNoPriv Community String No Uses a community string match for authentication.

Question No : 237 . such as the logging buffer (on RAM). ipv6 autoconfig Answer: B Explanation: To assign an IPv6 address to an interface. The logging process controls the distribution of logging messages to various destinations.RAM C.E Explanation: By default. ipv6 address 2001:db8:2222:7272::72/64 C.Which command can you use to manually assign a static IPv6 address to a router interface? A. use the “ipv6 address” command and specify the IP address you wish to use. Other terminals E. The console terminal D. The process also sends messages to the console.(Topic 5) What are the Popular destinations for syslog messages to be saved? (Choose three) A. depending on your configuration. We can configure this feature with the command logging file flash:filename. Note: Syslog messages can be written to a file in Flash memory although it is not a popular place to use. 202 . or a UNIX syslog server. terminal lines (console terminal). ipv6 autoconfig 2001:db8:2222:7272::72/64 B. Flash B.C. Syslog server Answer: B. switches send the output from system messages and debug privileged EXEC commands to a logging process. The logging buffer . ipv6 address PREFIX_1 ::1/64 D.

change of destination address in the IPv6 header D.) A. and autoconfiguration is a feature of IPV6 that allows for hosts to automatically obtain an IPv6 address.Question No : 238 .(Topic 5) Which two benefits are provided by using a hierarchical addressing network addressing scheme? (Choose two. you can keep your routing table entries (on the routers that receive the 203 . change of source address in the IPv6 header C. Telnet access does not require a password E.E Explanation: Here are some of the benefits of hierarchical addressing: Reduced number of routing table entries — whether it is with your Internet routers or your internal routers. autoconfiguration F. NAT Answer: A. What are two valid reasons for adopting IPv6 over IPv4? (Choose two. auto-negotiation of media rates C. dedicated communications between devices E. reduces routing table entries B. efficient utilization of MAC addresses D. this is most easily accomplished when you employ a hierarchical addressing plan.) A. no broadcast B. Question No : 239 . By summarizing routes. Route summarization is a way of having a single IP address represent a collection of IP addresses.(Topic 5) The network administrator has been asked to give reasons for moving from IPv4 to IPv6. you should try to keep your routing tables as small as possible by using route summarization.E Explanation: IPv6 does not use broadcasts. ease of management and troubleshooting Answer: A.

The Bigtime router is unable to authenticate to the Littletime router.summarized routes) manageable. it is configured as little123 on one side and big123 on the other.asp?p=174107 Question No : 240 . C. The routers cannot be configured to authenticate to each other.ciscopress.com/articles/article. The routers cannot be connected from interface S0/0 to interface S0/0.(Topic 5) 204 . Reference: http://www. CHAP authentication cannot be used on a serial interface. D. which offers the following benefits: Efficient allocation of addresses—Hierarchical addressing lets you take advantage of all possible addresses because you group them contiguously. the configured passwords must be identical on each router. What is the cause of the problem? A. one router must authenticate to another router.(Topic 5) Refer to the exhibit. B. The passwords do not match on the two routers. Answer: B Explanation: With CHAP authentication. Question No : 241 . With CHAP authentication. The usernames are incorrectly configured on the two routers. Here. E.

172.4.1.7.0/24 172.0/24 172.0 – 172.5. 172.1.4. 172.255.0/22 subnet encompasses all routes from the IP range 172.128/25 172.1.1.1.4.1.(Topic 5) 205 .1.0/24 Answer: C Explanation: The 172.6.1.0/24 E.4.4.7.7.1.0/21 C.0/22 B.1. 172.1. What is the most efficient summarization that R1 can use to advertise its networks to R2? A.6.1.1.0.0/24 172.Refer to the exhibit.0.4. Question No : 242 .1.0/24 172.0/25 172.5. 172.0/24 172.0/22 D.1.

BIA C. a new request for an address must be made. When a PC connects to a DHCP server. manufacturer. Question No : 243 . The PC connects to the network with that leased IP address until the lease expires. Answer: C Explanation: DHCP works in a client/server mode and operates like any other client/server relationship.(Topic 5) How does a DHCP server dynamically assign IP addresses to hosts? A. 206 . A host will usually keep the same address by periodically contacting the DHCP server to renew the lease. or other organization globally or worldwide. NIC B.What is the first 24 bits in a MAC address called? A. B. Addresses are leased to hosts. This lease mechanism ensures that hosts that move or power off do not hold onto addresses that they do not need. At the end of the period. OUI D. The host must contact the DHCP server periodically to extend the lease. Addresses are assigned for a fixed period of time. Addresses are permanently assigned so that the host uses the same address at all times. Addresses are allocated after a negotiation between the server and the host to determine the length of the agreement. D. The DHCP server returns these addresses to the address pool and reallocates them as necessary. and another address is then assigned. the server assigns or leases an IP address to that PC. C. They are used as the first 24 nits of the MAC address to uniquely identify a particular piece of equipment. VAI Answer: C Explanation: An Organizationally Unique Identifier (OUI) is a 24-bit number that uniquely identifies a vendor.

0. a unique IPv6 address for each device in the group E. these addresses can be assigned to more than one interface unlike an IPv6 unicast address. 255. These IPv6 addresses are global addresses. delivery of packets to the group interface that is closest to the sending device Answer: B.E. with each LAN containing 5 to 26 hosts? A.0. any-to-many communication model D. Anycast is designed to send a packet to the nearest interface that is a part of that anycast group. one-to-nearest communication model C.0 207 .252 C.Question No : 244 . The sender creates a packet and forwards the packet to the anycast address as the destination address which goes to the nearest router.255. one-to-many communication model B.(Topic 5) Which subnet mask would be appropriate for a network address range to be subnetted for up to eight LANs.(Topic 5) Which three are characteristics of an IPv6 anycast address? (Choose three.255.255. Question No : 245 . The anycast packet in a LAN setting forwards the packet to the neighbor it learned about first.240 B. The nearest router or interface is found by using the metric of a routing protocol currently running on the network.255.F Explanation: A new address type made specifically for IPv6 is called the Anycast Address. However in a LAN setting the nearest interface is found depending on the order the neighbors were learned.) A. the same address for multiple devices in the group F. 255.0.

For example. D. A syslog 208 . B.255. E.D. port 5000). In general. Answer: C. A Syslog server provides the storage space necessary to store log files without using router disk space. A Syslog server provides the storage space necessary to store log files without using router disk space. Enabling Syslog on a router automatically enables NTP for accurate time stamping.224 will allow for up to 8 networks with 32 IP addresses each (30 usable).240 Answer: D Explanation: For a class C network. there are significantly more Syslog messages available within IOS as compared to SNMP Trap messages. such as SSL wrappers. a Cisco Catalyst 6500 switch running Cisco IOS Software Release 12. There are more Syslog messages available within Cisco IOS than there are comparable SNMP trap messages.255.D. While there are some exceptions.255. Utilizing Syslog improves network performance. A Syslog server helps in aggregation of logs and alerts.F Explanation: The Syslog sender sends a small (less than 1KB) text message to the Syslog receiver. C.255." "Syslog daemon. Logging to a central syslog server helps in aggregation of logs and alerts.2(18)SXF contains about 90 SNMP trap notification messages. but has more than 6000 Syslog event messages." Syslog messages can be sent via UDP (port 514) and/or TCP (typically. Question No : 246 . System logging is a method of collecting messages from devices to a server running a syslog daemon. F. Cisco devices can send their log messages to a UNIX-style syslog service. The Syslog receiver is commonly called "syslogd. 255.255.255.224 E. The Syslog server automatically notifies the network administrator of network problems.(Topic 5) Which three statements about Syslog utilization are true? (Choose three. a mask of 255. 255.) A. this data is typically sent in clear text over the network." or "Syslog server.

C. HSRP supports up to 255 groups per interface. Answer: A.(Topic 5) Which three statements about HSRP operation are true? (Choose three.0C07. The HSRP virtual IP address must be on a different subnet than the routers' interfaces on the same LAN. HSRP group 10 uses the HSRP virtual MAC address of 0000.service accepts messages and stores them in files. where xx is the HSRP group number in hexadecimal based on the respective interface.com/c/en/us/products/collateral/services/highavailability/white_paper_c11-557812. or prints them according to a simple configuration file. A DHCP client uses a ping to detect address conflicts. The virtual IP address and virtual MA+K44C address are active on the HSRP Master router.0C07. HSRP version 2 uses a virtual MAC address of 0000.(Topic 5) Which statement is correct regarding the operation of DHCP? A.ACxx.B.html Question No : 247 .0C9F.FXXX (XXX: HSRP group in hexadecimal). The HSRP virtual IP address must be the same as one of the router's interface addresses on the LAN. enabling an administrative form of load balancing. For example. D. HSRP supports only clear-text authentication.cisco.AC0A. The HSRP default timers are a 3 second hello interval and a 10 second dead interval. E. 209 .) A. Reference: http://www.F Explanation: The virtual MAC address of HSRP version 1 is 0000. B. Question No : 248 . F.

(Topic 5) 210 . If a conflict is detected. as well as port information. A DHCP client uses a gratuitous ARP to detect a DHCP server. the address is removed from the pool and an administrator must resolve the conflict. During address assignment. Extended ACL’s examine the source and destination address.(Topic 5) On which options are standard access lists based? A. F. the address is removed from the pool for an amount of time configurable by the administrator. Answer: D Explanation: An address conflict occurs when two hosts use the same IP address. A DHCP server uses a gratuitous ARP to detect DHCP clients. C. the address is removed from the pool. (Reference: http://www. DHCP checks for conflicts using ping and gratuitous ARP.cisco.com/en/US/docs/ios/12_1/iproute/configuration/guide/1cddhcp. source address and wildcard mask Answer: D Explanation: Standard ACL’s only examine the source IP address/mask to determine if a match is made. If an address conflict is detected. D. destination address and wildcard mask B. The address will not be assigned until the administrator resolves the conflict. the address is removed from the pool and will not be reused until the server is rebooted. If an address conflict is detected.B. Question No : 250 . destination address and subnet mask C. source address and subnet mask D. E.html) Question No : 249 . If an address conflict is detected.

loss of connection to a neighbor.252. trap D. 255.255. capture Answer: C Explanation: An agent can send unsolicited traps to the manager.com/c/en/us/td/docs/switches/lan/catalyst2950/software/release/121_9_ea1/configuration/guide/scg/swsnmp.248.255.cisco.html Question No : 251 .255.0 B. link status (up or down). response B.254. 255. 255.(Topic 5) Refer to the exhibit. Reference: http://www.0 D.255. get C. restarts. or other significant events. Traps can mean improper user authentication. Which subnet mask will place all hosts on Network B in the same subnet with the least amount of wasted addresses? A.0 211 .What SNMP message alerts the manager to a condition on the network? A.255.0 C. MAC address tracking. Traps are messages alerting the SNMP manager to a condition on the network. 255. closing of a TCP connection.

168.255. 212 . An IPv4 subnet mask is frequently expressed in quad-dotted decimal representation. The company needs a minimum of 300 sub-networks and a maximum of 50 host addresses per subnet.255.255. 255.0 is the subnet mask for the 192.0/24).255.254.(Topic 5) A national retail chain needs to design an IP addressing scheme to support a nationwide network.Answer: B Explanation: 310 hosts < 512 = 29 -> We need a subnet mask of 9 bits 0 -> 1111 1111.E Explanation: Subnetting is used to break the network into smaller more efficient subnets to prevent excessive rates of Ethernet packet collision in a large network.255. 255. 255. 255. 255.1.255.g.0 B. which is a bit mask covering the number of bits used in the prefix. Working with only one Class B address.1111 1111. which of the following subnet masks will support an appropriate addressing scheme? (Choose two.0 Answer: B. Routers are used to manage traffic and constitute borders between subnets.255.252. A routing prefix is the sequence of leading bits of an IP address that precede the portion of the address used as host identifier.255.128 C.0 D. In IPv4 networks. with the organization's network address space (see also Autonomous System) partitioned into a tree-like structure.255.168. Such subnets can be arranged hierarchically.255.) A. 255.0 Question No : 252 .224 E.192 F.255..0 network with a 24-bit routing prefix (192. 255.0000 0000 -> 255. e.1111 1110. the routing prefix is often expressed as a "subnet mask".255.1.255.248.

1111 1111. 10.0000 0000 /30 = 1111 1111.1.0.0.0/23 is the correct answer.252 E. optional IPsec B.1111 1110.255.0/24 subnetted with mask 255.252 C.10.0.10.255. So 10.252 Answer: D Explanation: We need 113 point-to-point links which equal to 113 sub-networks < 128 so we need to borrow 7 bits (because 2^7 = 128).10.255. The network used for point-to-point connection should be /30.1. 10.0/25 subnetted with mask 255.10.0/16 subnetted with mask 255.Question No : 253 . complicated header 213 .0/23 subnetted with mask 255. So our initial network should be 30 – 7 = 23.255. Which IP addressing scheme defines the address range and subnet mask that meet the requirement and waste the fewest subnet and host addresses? A. autoconfiguration C.0/18 subnetted with mask 255.) A. no broadcasts D.255. 10.1111 1100 (borrow 7 bits) Question No : 254 .255.252 B.255.252 D.10.10.255.255.(Topic 5) What are three features of the IPv6 protocol? (Choose three. You can understand it more clearly when writing it in binary form: /23 = 1111 1111.(Topic 5) The network administrator is asked to configure 113 point-to-point links.255. 10.0. 10.

The GLBP member routers will reply with one of four possible burned in hardware addresses.C. IPv6 does not implement traditional IP broadcast. Gateway Load Balancing Protocol (GLBP) can use of up to four routers simultaneously.1. 214 . Answer: A Explanation: One disadvantage of HSRP and VRRP is that only one router is in use.E Explanation: An important feature of IPv6 is that it allows plug and play option to the network devices by allowing them to configure themselves independently. In GLBP. there is still only one virtual IP address but each router has a different virtual MAC address. plug-and-play F. which router will respond to client ARP requests? A. checksums Answer: B. D. The active virtual gateway will reply with its own hardware MAC address. other routers must wait for the primary to fail because they can be used. the same result can be achieved by sending a packet to the link-local all nodes multicast group at address ff02::1. It replies with different virtual MAC addresses that correspond to different routers (known as Active Virtual Forwarders – AVFs) so that clients can send traffic to different routers in that GLBP group (load sharing). This is accomplished by autoconfiguration. All GLBP member routers will reply in round-robin fashion. However. i. B.e. C.(Topic 5) In GLBP. Question No : 255 .0. and therefore does not define broadcast addresses. This feature was critical to allow network connectivity to an increasing number of mobile devices. The active virtual gateway will reply with one of four possible virtual MAC addresses. which is analogous to IPv4 multicast to address 224. It is possible to plug a node into an IPv6 network without requiring any human intervention.0. First a GLBP group must elect an Active Virtual Gateway (AVG). the transmission of a packet to all hosts on the attached link using a special broadcast address. The AVG is responsible for replying ARP requests from hosts/clients.E. In IPv6.

emergency C.Question No : 256 . critical E. warning D.F Explanation: The Message Logging is divided into 8 levels as listed below: Level Keyword Description 0 emergencies System is unusable 1 alerts Immediate action is needed 2 critical Critical conditions exist 3 errors Error conditions exist 4 warnings Warning conditions exist 5 215 .) A. What are three message types that will be sent to the Syslog server? (Choose three.D. informational B.(Topic 5) A network administrator enters the following command on a router: logging trap 3. error Answer: B. debug F.

will be logged. Which 3 types of logs would be generated (choose four) 216 . global unicast B. meaning an Anycast address is used by a device to send data to one specific recipient (interface) that is the closest out of a group of recipients (interfaces).(Topic 5) Syslog was configured with a level 3 trap. anycast C. critical. that level and all the higher levels will be logged. For example. Question No : 258 . and errors. conditions exist 6 informational Informational messages 7 debugging Debugging messages If you specify a level with the “logging trap level” command.(Topic 5) What is known as "one-to-nearest" addressing in IPv6? A. alerts. all the logging of emergencies. multicast D. Question No : 257 . but significant. by using the “logging trap 3 command.notification Normal. unspecified address Answer: B Explanation: IPv6 Anycast addresses are used for one-to-nearest communication.

If you specify a level with the “logging console level” command. that level and all the higher levels will be displayed.(Topic 5) Refer to the exhibit.B. Alerts C. For example. alerts. but significant. critical. Critical D. errors.A. by using the “logging console warnings” command. Question No : 259 .C. warnings will be displayed. all the logging of emergencies. conditions exist 6 informational Informational messages 7 debugging Debugging messages The highest level is level 0 (emergencies). Errors E. The lowest level is level 7.D Explanation: The Message Logging is divided into 8 levels as listed below: Level Keyword Description 0 emergencies System is unusable 1 alerts Immediate action is needed 2 critical Critical conditions exist 3 errors Error conditions exist 4 warnings Warning conditions exist 5 notification Normal. Warnings Answer: A. Emergencies B. 217 .

Question No : 260 . NAT facilitates end-to-end communication when IPsec is enabled.128/25 C. Network A . Link A .3. Link A . B.172.16.172.) A.16.48/26 B.3. valid option. Also.0/30 is valid.128/25 is the best.112/30 Answer: B. Dynamic NAT facilitates connections from the outside of the network. C.16.172. NAT conserves addresses through host MAC-level multiplexing.) A. Link A . 218 .D Explanation: Only a /30 is needed for the point to point link and sine the use of the ip subnet-zero was used. Network A .0/30 E. D. a /25 is required for 120 hosts and again 172.3.3.16.172.All of the routers in the network are configured with the ip subnet-zero command.3.3.192/26 D.16. Network A . NAT eliminates the need to re-address all hosts that require external access.172.172.40/30 F.16.3. Which network addresses should be used for Link A and Network A? (Choose two.16. 172.(Topic 5) What are two benefits of using NAT? (Choose two.16.3.

including Internet Key Exchange (IKE). by encrypting passwords in the plain text configuration file C. NAT eliminates the need to readdress the inside hosts -> B is correct. NAT adds some security to the inside network > F is correct. NAT protects network security because private networks are not advertised. F. By allocating specific public IP addresses to inside hosts. Infrastructure Security Question No : 261 . NAT accelerates the routing process because no modifications are made on the packets. In order for IPsec to work with NAT we need to allow additional protocols. by encrypting all passwords passing through the router B. NAT has to modify the source IP addresses in the packets -> E is not correct.(Topic 6) How does using the service password-encryption command on a router provide additional security? A. Encapsulating Security Payload (ESP) and Authentication Header (AH) -> more complex -> A is not correct. Answer: B.E.F Explanation: By not revealing the internal IP addresses. by configuring an MD5 encrypted key to be used by routing protocols to validate routing exchanges 219 . NAT does conserve addresses but not through host MAC-level multiplexing. It conserves addresses by allowing many private IP addresses to use the same public IP address to go to the Internet -> C is not correct. by requiring entry of encrypted passwords for access to the device D. Topic 6. Connection from the outside of the network through a “NAT” network is more difficult than a more network because IP addresses of inside hosts are hidden -> C is not correct.

all the (current and future) passwords are encrypted.E.(Topic 6) Refer to the exhibit. and then observes the output from these two show commands. If any other device is detected. Which two of these changes are necessary for SwitchA to meet the requirements? (Choose 220 . This command is primarily useful for keeping unauthorized individuals from viewing your password in your configuration file Question No : 262 . by automatically suggesting encrypted passwords for use in configuring the router Answer: B Explanation: By using this command. A junior network administrator was given the task of configuring port security on SwitchA to allow only PC_A to access the switched network through port fa0/1. The administrator configured the interface and tested it with successful pings from PC_A to RouterA. the port is to drop frames from this device.

Port security interface counters need to be cleared before using the show command. the command switchport port-security mac-address 221 . F. C.two. D. Question No : 263 . C. B.D Explanation: From the output we can see that port security is disabled so this needs to be enabled. The port security configuration needs to be saved to NVRAM before it can become active.(Topic 6) What will be the result if the following configuration commands are implemented on a Cisco switch? Switch(config-if)# switchport port-security Switch(config-if)# switchport port-security mac-address sticky A. E. Port security needs to be configured to shut down the interface in the event of a violation. Port security needs to be enabled on the interface. A dynamically learned MAC address is saved in the startup-configuration file. E.) A. Statically configured MAC addresses are saved in the startup-configuration file if frames from that address are received. the maximum number of devices is set to 2 so this needs to be just one if we want the single host to have access and nothing else. A dynamically learned MAC address is saved in the VLAN database. A dynamically learned MAC address is saved in the running-configuration file. Port security needs to be configured to allow only one learned MAC address. Answer: B. B. D. Port security needs to be globally enabled. Answer: B Explanation: In the interface configuration mode. Also. Statically configured MAC addresses are saved in the running-configuration file if frames from that address are received.

E. Question No : 264 . + The switch does not support port security aging of sticky secure MAC addresses. The sticky learning feature allows the addition of dynamically learned addresses to the running configuration. + A secure port cannot belong to a Fast EtherChannel or Gigabit EtherChannel port group. D. up to the maximum defined.) A. all addresses seen on the voice VLAN are learned as dynamic secure addresses. When dynamic MAC address learning is enabled on an interface. the interface converts all the dynamic secure MAC addresses to sticky secure MAC addresses.sticky enables sticky learning. + A secure port cannot be a dynamic access port.(Topic 6) A network administrator needs to configure port security on a switch. and all addresses seen on the access VLAN (to which the port belongs) are learned as sticky secure addresses. + If any type of port security is enabled on the access VLAN. trunk ports. 222 . C.D Explanation: Follow these guidelines when configuring port security: + Port security can only be configured on static access ports. The network administrator can apply port security to dynamic access ports. you must set the maximum allowed secure addresses on the port to at least two. + You cannot configure static secure or sticky secure MAC addresses on a voice VLAN. The network administrator can configure static secure or sticky secure MAC addresses in the voice VLAN. + When you enable port security on an interface that is also configured with a voice VLAN.1Q tunnel ports. B. or 802. The network administrator can apply port security to EtherChannels. + When a voice VLAN is configured on a secure port that is also configured as a sticky secure port. + A secure port cannot be a destination port for Switched Port Analyzer (SPAN). the switch can learn new addresses. Which two statements are true? (Choose two. When entering this command. dynamic port security is automatically enabled on the voice VLAN. Answer: C.

223 .+ The protect and restrict options cannot be simultaneously enabled on an interface.html) Question No : 265 . (Reference: http://www.com/en/US/docs/switches/lan/catalyst3550/software/release/12.(Topic 6) Refer to exhibit.1_19_ea1 /configuration/guide/swtrafc.cisco.

B. The following commands are executed on interface fa0/1 of 2950Switch. 2950Switch(config-if)# switchport port-security 2950Switch(config-if)# switchport port-security mac-address sticky 224 . Answer: C Explanation: The login keyword has been set. The vty password is missing. D. Question No : 266 . What is the cause of this failure? A. An ACL is blocking Telnet access. This will result in the “password required. The console password is missing. but none set” message to users trying to telnet to this router.A network administrator cannot establish a Telnet session with the indicated router. C. A Level 5 password is not set.(Topic 6) Refer to the exhibit. but not password.

FFFF.00aa. Port security with sticky MAC addresses retains dynamically learned MAC addresses during a link-down condition. SW1#show port-secure interface FastEthernet 0/12 B. All frames arriving on 2950Switch with a destination of 0000. What two functions will occur when this frame is received by 2950Switch? (Choose two. Question No : 267 . B.(Topic 6) Which two commands correctly verify whether port security has been configured on port FastEthernet 0/12 on a switch? (Choose two. D.2950Switch(config-if)# switchport port-security maximum 1 The Ethernet frame that is shown arrives on interface fa0/1. will be forwarded out fa0/1.) A.bbbb. the port does not forward ingress traffic that has source addresses outside the group of defined addresses. Only host A will be allowed to transmit frames on fa0/1. SW1#show switchport port-secure interface FastEthernet 0/12 225 . Only frames from source 0000. This frame will be discarded when it is received by 2950Switch. When you assign secure MAC addresses to a secure port. C. but sticky MAC addresses can be learned dynamically. The MAC address table will now have an additional entry of fa0/1 FFFF. specifically port security using sticky addresses. Answer: B. Hosts B and C may forward frames out fa0/1 but frames arriving from other switches will not be forwarded out fa0/1. the device attached to that port has the full bandwidth of the port.aaaa will be forwarded out fa0/1. the first learned MAC address of 2950Switch.00bb. Port security with sticky MAC addresses provides many of the same benefits as port security with static MAC addresses.D Explanation: The configuration shown here is an example of port security. E. If you limit the number of secure MAC addresses to one and assign a single secure MAC address. You can use port security with dynamically learned and static MAC addresses to restrict a port's ingress traffic by limiting the MAC addresses that are allowed to send traffic into the port.) A. F.FFFF.

when combined.148.0.0 0.255 C.168.149. access-list 10 permit ip 192.0 only.0.255.0.168.147.168.147.0 0.D Explanation: We can verify whether port security has been configured by using the “show runningconfig” or “show port-security interface” for more detail.255 226 . 192.0 0.168.0.) A.168.1.1.149.(Topic 6) A network administrator is configuring ACLs on a Cisco router.255. access-list 10 permit ip 192.0.0.146.0 0. to allow traffic from hosts on networks 192.255 D. An example of the output of “show port-security interface” command is shown below: Question No : 268 . SW1#show running-config D. would you use to accomplish this task? (Choose two. SW1#show switchport port-security interface FastEthernet 0/12 Answer: C. Which two ACL statements. and 192.168.146.168. access-list 10 permit ip 192.148.168.C.255 B.0. SW1#show port-security interface FastEthernet 0/12 E. access-list 10 permit ip 192. 192.

147.168.1.0 Answer: A.0 and 192.168.0 networks. no ip access-group 102 in 227 .0 networks.0.146.1.C Explanation: “access-list 10 permit ip 192. access-list 10 permit ip 192.168. and “access-list 10 permit ip 192.255.E.0 and 192.0 0. Which interface command immediately removes the effect of ACL 102? A.168.168.0.255” would allow only the 192.0 255.0.(Topic 6) Refer to the exhibit.255.255 F.148.146.0 0.168.149. no ip access-class 102 out C.0 0. Question No : 269 .168.255” would allow only the 192.168. no ip access-class 102 in B.148. An attempt to deny web access to a subnet blocks all traffic from the subnet.146.0. access-list 10 permit ip 192.146.

no ip access-list 102 in Answer: D Explanation: The “ip access-group” is used to apply and ACL to an interface.(Topic 6) Which set of commands is recommended to prevent the use of a hub in the access layer? A. we know that the ACL is applied to outbound traffic.(Topic 6) 228 . configure the interface mode as the access mode Second. switch(config-if)#switchport mode trunk switch(config-if)#switchport port-security maximum 1 B. switch(config-if)#switchport mode access switch(config-if)#switchport port-security mac-address 1 Answer: C Explanation: This question is to examine the layer 2 security configuration. Question No : 270 . you should perform the following configurations in the interface mode: First. From the output shown. switch(config-if)#switchport mode access switch(config-if)#switchport port-security maximum 1 D. enable the port security and set the maximum number of connections to 1. Question No : 271 . switch(config-if)#switchport mode trunk switch(config-if)#switchport port-security mac-address 1 C.D. so “no ip access-group 102 out” will remove the effect of this ACL. In order to satisfy the requirements of this question. no ip access-group 102 out E.

Which item represents the standard IP ACL? A. Question No : 272 .1. access-list 110 permit ip any any B.168. access list 101 deny tcp any host 192. access-list 2500 deny tcp any host 192. Physically secure the interface.168. The most simple way to secure the virtual terminal interface is to configure a username & password to prevent unauthorized login.E Explanation: It is a waste to administratively shut down the interface. Answer: D. B.1 D.1 eq 22 Answer: B Explanation: The standard access lists are ranged from 1 to 99 and from 1300 to 1999 so only access list 50 is a standard access list. The “access-group” command is only used to apply an access list to a physical interface -> C is not correct. E.168.255 C.0.(Topic 6) What can be done to secure the virtual terminal interfaces on a router? (Choose two.1. someone can still access the virtual terminal interfaces via other interfaces -> We cannot physically secure a virtual interface because it is “virtual” ->. Enter an access list and apply it to the virtual terminal interfaces using the access-class command.) A. D. C.1.1 0. 229 . Moreover.0. Configure a virtual terminal password and login process. Administratively shut down the interface. access-list 50 deny 192. To apply an access list to a virtual terminal interface we must use the “access-class” command. Create an access list and apply it to the virtual terminal interfaces with the access-group command.

The user on host C should be able to use a web browser to access financial information from the Finance Web Server.(Topic 6) Drag the security features on the left to the specific security risks they help protect against on the right. (Not all options are used. all other traffic should be allowed. 230 . Since there are multiple resources for the corporation at this location including other resources on the Finance Web Server. No other hosts will have web access to the Finance Web Server.(Topic 6) A network associate is adding security to the configuration of the Corp1 router.) Answer: Question No : 274 CORRECT TEXT .Question No : 273 DRAG DROP . The task is to create and apply an access-list with no more than three statements that will allow ONLY host C web access to the Finance Web Server. No other hosts from the LAN nor the Core should be able to use a web browser to access this server. All other traffic is permitted.

1 host B 192.254 host A 192.33.3 host 172.168.168.22.168.22.4 The servers in the Server LAN have been assigned addresses of 172.2 host C 192.196.17 172.23.242.22.23 eq 80 comment: To deny any source to access finance server address (172. All passwords have been temporarily set to "cisco".242.18. The Core connection uses an IP address of 198.22.Access to the router CLI can be gained by clicking on the appropriate host. Answer: Select the console on Corp1 router Configuring ACL Corp1>enable Corp1#configure terminal comment: To permit only Host C (192.33.168.23) {destination addr} on port number 80 (web) Corp1(config)#access-list 100 permit tcp host 192.242.33.3){source addr} to access finance server address (172.168.33.33.242.65.242.23) {destination addr} on port number 80 (web) Corp1(config)#access-list 100 deny tcp any host 172.3 host D 192.23 eq 80 231 .242.33.168.168.1 192. The Finance Web Server is assigned an IP address of 172.22.242.22. The computers in the Hosts LAN have been assigned addresses of 192.30.22.33.33.168.

C.240 ( range of address specified going to server is given as 172. B.x.23) to test whether it permits /deny access to the finance web Server.30 255. 232 .22. Check whether you configured correctly and in order. Question No : 275 .168.x.33. This should be corrected in order ACL to work type this commands at interface mode : no ip address 192. You can apply only one access list on any interface.x (removes incorrect configured ipaddress and subnet mask) Configure Correct IP Address and subnet mask: ip address 172. Step2: Click on each host A.255.168.242.242.x. Corp1(config)#access-list 100 permit ip any any Applying the ACL on the Interface comment: Check show ip interface brief command to identify the interface type and number by checking the IP address configured.172.3) can access the Finance Web Server you can click on NEXT button to successfully submit the ACL SIM.x.22.242. If the other host can also access then maybe something went wrong in your configuration. B. Corp1(config)#interface fa 0/1 If the ip address configured already is incorrect as well as the subnet mask. Corp1(config-if)#ip access-group 100 out Corp1(config-if)#end Important: To save your running config to startup before exit.242. Host opens a web browser page.comment: To permit ip protocol from any source to access any destination because of the implicit deny any any statement at the end of ACL. & D. You can place as many access lists as you want on any interface.17 . Step 4: If only Host C (192.(Topic 6) Which statement about access lists that are applied to an interface is true? A. Select address box of the web browser and type the ip address of finance web server (172.22.30 ) Comment: Place the ACL to check for packets going outside the interface towards the finance web server.x 255.22.255.3) has access to the server. Step 3: Only Host C (192.33. Corp1#copy running-config startup-config Verifying the Configuration: Step1: show ip interface brief command identifies the interface on which to apply access list.

(Topic 6) When you are troubleshooting an ACL issue on a router. Question No : 277 . per direction and per interface.C. You can apply multiple access lists with the same protocol or in different directions. per direction. show ip interface E. You can configure one access list. per Layer 3 protocol. D. show ip access-lists B.(Topic 6) Refer to the exhibit. 233 . show access-lists C. list ip interface Answer: D Explanation: Incorrect answer: show ip access-lists does not show interfaces affected by an ACL. Answer: C Explanation: We can have only 1 access list per protocol. show interface D. which command would you use to verify which interfaces are affected by the ACL? A. It means: + We cannot have 2 inbound access lists on an interface + We can have 1 inbound and 1 outbound access list on an interface Question No : 276 .

BPDU Guard 234 . DBAC D. B. even if a more specific of better match is found later on in the access list.21. Root Guard D. it it best to begin with the most specific entries first. C.128/28) from accessing the network. to prevent all hosts (except those whose addresses are the first and last IP of subnet 172. Question No : 278 . UplinkFast C. BackboneFast B.(Topic 6) Which Cisco Catalyst feature automatically disables the port in an operational PortFast upon receipt of a BPDU? A. include the subnet (B) and then finally the rest of the traffic (A). How can the ACL statements be re-arranged so that the system works as intended? A. and D of ACL 10 have been entered in the shown order and applied to interface E0 inbound. ACDB B.Statements A. But as is. Then.1. CDBA Answer: D Explanation: Routers go line by line through an access list until a match is found and then will not look any further. in this cast the two hosts in line C and D. So. the ACL does not restrict anyone from the network. BADC C.

(Topic 7) A network associate is adding security to the configuration of the Corp1 router. all other traffic should be allowed. 235 . Infrastructure Management Question No : 279 CORRECT TEXT . BPDU Filter Answer: D Explanation: We only enable PortFast feature on access ports (ports connected to end stations). No other hosts from the LAN nor the Core should be able to use a web browser to access this server. it will be shut down to prevent a loop. when a PortFast receives a BPDU. No other hosts will have web access to the Finance Web Server.E. Topic 7. But if someone does not know he can accidentally plug that port to another switch and a loop may occur when BPDUs are being transmitted and received on these ports. The task is to create and apply an access-list with no more than three statements that will allow ONLY host C web access to the Finance Web Server. Since there are multiple resources for the corporation at this location including other resources on the Finance Web Server. All other traffic is permitted. With BPDU Guard. The user on host C should be able to use a web browser to access financial information from the Finance Web Server.

The Core connection uses an IP address of 198.240.3 Answer: Corp1#conf t Corp1(config)# access-list 128 permit tcp host 192.18.26 eq www Corp1(config)# access-list 128 permit ip any any Corp1(config)#int fa0/1 Corp1(config-if)#ip access-group 128 out Corp1(config-if)#end Corp1#copy run startup-config Question No : 280 .168.1 host B 192. All passwords have been temporarily set to "cisco".168.1 192.22.240.(Topic 7) 236 .168.22.168.168.Access to the router CLI can be gained by clicking on the appropriate host.240.247.2 host C 192.240.26 eq www Corp1(config)# access-list 128 deny tcp any host 172.141.168.240.65 The computers in the Hosts LAN have been assigned addresses of 192.254 host A 192.1 host 172.240.141.

(Topic 7) What Cisco IOS feature can be enabled to pinpoint an application that is causing slow network performance? A. SNMP B. WCCP D.) A. Also bear in mind that the flows from aggregating large numbers of devices can add up. Reference: http://searchenterprisewan.techtarget. Netflow C. Some symptoms of high CPU utilization are very large jitter and increased delay. Another thing to keep in mind is the amount of data you're going to be sending across the network. CPU utilization B. WAN encapsulation Answer: A. but you will still want to check it out before you turn on the feature. port availability E. Depending on how much traffic you have and how you configure it. Services running on the device may also be affected. the traffic can be substantial. you may not want to send NetFlow data from a datacenter switch to a NetFlow collector on the other side of a small WAN circuit. IP SLA Answer: B 237 .com/tip/How-the-NetFlow-protocolmonitors-your-WAN Question No : 281 . For example.What are three factors a network administrator must consider before implementing Netflow in the network? (Choose three.C Explanation: NetFlow has a reputation for increasing CPU utilization on your network devices. number of devices exporting Netflow data D. SNMP version F. Cisco's performance testing seems to indicate that newer hardware can accommodate this load pretty well. where Netflow data will be sent C.B.

cisco. bandwidth hogs and bandwidth utilization quickly with command line interface or reporting tools.(Topic 7) Scenario Refer to the topology.Explanation: Netflow can be used to diagnose slow network performance.html Question No : 282 .com/c/en/us/products/collateral/ios-nx-os-software/iosnetflow/prod_white_paper0900aecd80406232. You are required to troubleshoot and resolve OSPF neighbor adjacency issues between the main office and the routers located in the remote branch offices. Reference: http://www. 238 . Your company has decided to connect the main office with three other remote branch offices using point-to-point serial links.

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B. There is an area ID mismatch. the username is not configured on R3 and R6. D.An OSPF neighbor adjacency is not formed between R3 in the main office and R6 in the Branch3 office. C. There is an OSPF hello and dead interval mismatch. Answer: D Explanation: Using the show running-config command we see that R6 has been incorrectly configured with the same router ID as R3 under the router OSPF process. There is a PPP authentication issue. What is causing the problem? A. The R3 router ID is configured on R6. 242 .

Question No : 283 .(Topic 7) Scenario Refer to the topology. R2. respectively. Use the appropriate show commands to troubleshoot the issues. You are required to troubleshoot and resolve the EIGRP issues between the various routers. 243 . R2 and R3 are connected to the switches SW1 and SW2. SW1 and SW2 are also connected to the routers R4 and R5. and R3 with serial links. The EIGRP routing protocol is configured. Your company has connected the routers R1.

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5. Sending 5. which is the loopback0 IP address of R1. Answer: C Explanation: R5 does not have a route to the 10.1 network 248 . The network statement is missing on R5. D.5.1. C.1. The IP address that is configured on the Lo1 interface on R5 is incorrect.1.5.55 source 10.1. B.5.1.1 ……. timeout is 2 seconds: Packet sent with a source address of 10. When looking at the EIGRP configuration on R1.Study the following output taken on R1: R1# Ping 10.1 Type escape sequence to abort.1.1. The loopback interface is shut down on R5.55. The network statement is missing on R1.1 network. we see that the 10. 100-byte ICMP Echos to 10.1. Success rate is 0 percent (0/5) Why are the pings failing? A.

(Topic 7) An administrator is trying to ping and telnet from SwitchC to RouterC with the results shown below.statement is missing on R1. Question No : 284 . 249 .

250 .Click the console connected to RouterC and issue the appropriate commands to answer the questions.

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253 .

What would be the effect of issuing the command ip access-group 115 in on the s0/0/1 interface? 254 .

One of the top talkers commands uses a static configuration to view top talkers in the network and another command called dynamic top talkers allows real-time sorting and aggregation of NetFlow data.0 network would pass through the interface. No host could connect to RouterC through s0/0/1. C. D. and www would work but telnet would fail. FTP. show ip flow top-talkers C. Also shown is a show MLS command to view the hardware cache on the Cisco Catalyst 6500 Series Switch. There are three methods to visualize the data depending on the version of Cisco IOS Software. The traditional show command for NetFlow is "show ip cache flow" also available are two forms of top talker commands.A. show ip cache flow D. FTP-DATA.(Topic 7) What command visualizes the general NetFlow data on the command line? A. Answer: A Explanation: First let’s see what was configured on interface S0/0/1: Question No : 285 . B. show mls sampling E. Only traffic from the 10. The following is the original NetFlow show command used for many years in Cisco IOS 255 .4. show mls netflow ip Answer: C Explanation: The following is an example of how to visualize the NetFlow data using the CLI. show ip flow export B. Telnet and ping would work but routing updates would fail. echo.4.

com/c/en/us/products/collateral/ios-nx-os-software/iosnetflow/prod_white_paper0900aecd80406232. 7-25 Reference: http://www. basic statistics about number of flows and export timer setting. The “show ip cache flow” command displays a summary of the NetFlow accounting statistics. 256 . a view of the protocol distribution statistics and the NetFlow cache.cisco.Software.(Topic 7) Refer to the exhibit.html Question No : 286 . Information provided includes packet size distribution.

D. B. 257 . There is an encapsulation mismatch between SW1's Fa0/1 and SW2's Fa0/1 interfaces. C. Answer: D Explanation: You must configure all interfaces in an EtherChannel to operate at the same speeds and duplex modes. There is a speed mismatch between SW1's Fa0/1 and SW2's Fa0/1 interfaces.If the devices produced the given output. There is an MTU mismatch between SW1's Fa0/1 and SW2's Fa0/1 interfaces. what is the cause of the EtherChannel problem? A. SW1's Fa0/1 interface is administratively shut down. Question No : 287 . Based on the output shown.(Topic 7) An administrator is trying to ping and telnet from SwitchC to RouterC with the results shown below. SW1 is configured to run at 10Mb while SW2 is operating at 100 Mb.

258 .Click the console connected to RouterC and issue the appropriate commands to answer the questions.

259 .

260 .

261 .

What would be the effect of issuing the command ip access-group 114 in to the fa0/0 interface? 262 .

4. Hosts in network 192. Interface S0/0 on RouterA is configured with an incorrect subnet mask. C. Routing protocol updates for the 10. Answer: B Explanation: From the output of access-list 114: access-list 114 permit ip 10.255 any we can easily understand that this access list allows all traffic (ip) from 10.0 are unable to reach hosts in network 192. Attempts to telnet to the router would fail.168.0. IP traffic would be passed through the interface but TCP and UDP traffic would not. B. D. Interface S0/0 on RouterA is not receiving a clock signal from the CSU/DSU.(Topic 7) Refer to the exhibit. The IP address that is configured on S0/0 of RouterB is not in the correct subnet.0.A.0 0.2. E.) A. It would allow all traffic from the 10. Interface S0/0 on RouterB is administratively down.4. D.168.3.4.4.0.0/24 network Question No : 288 .4. The cable that is connected to S0/0 on RouterA is faulty.4. what are two possible reasons for the failure? (Choose two.0 network would not be accepted from the fa0/0 interface. B. Based on the output from RouterA. F.4. C. 263 .4. The encapsulation that is configured on S0/0 of RouterB does not match the encapsulation that is configured on S0/0 of RouterA.0 network.

Based on the layered approach to troubleshooting and beginning with the lowest layer.F Explanation: From the output we can see that there is a problem with the Serial 0/0 interface. drag each procedure on the left to its proper category on the right. Answer: Explanation: 264 . but the line protocol is down. Question No : 289 DRAG DROP . It is enabled.Answer: E. There could be a result of mismatched encapsulation or the interface not receiving a clock signal from the CSU/DSU.(Topic 7) A user is unable to connect to the Internet.

checking if the IP can be assignable for host.1. We do this by simply making a ping to the loopback interface 127.(Topic 7) Refer to the exhibit.com to assure that the far end server is not down (it sometimes make we think we can’t access to the Internet). the RJ45 headers are plugged in. For your information. For example.0. Question No : 290 . 2) and TCP/IP stack (layer 3) are working properly. microsoft.com. rollover…) is correct. straight-through. 265 . We are using a URL so this step belongs to layer 7 of the OSI model. in this case an Ethernet cable connection. the signal on the cable is acceptable… Next we “verify NIC operation”. Verify IP configuration belongs to layer 3.0. If it works then the NIC card (layer 1. the PC’s IP is in the same network with the gateway… Verifying the URL by typing in your browser some popular websites like google.The question asks us to “begin with the lowest layer” so we have to begin with Layer 1: verify physical connection. “verify Ethernet cable connection” means that we check if the type of connection (crossover.

The address of SwitchA is a subnet address. E.32 Broadcast address: 192. HostA is not on the same subnet as its default gateway.168. C. Question No : 291 .168.1.168.HostA cannot ping HostB.1.64 Broadcast address: 192. D.168. and R3 with serial links. The EIGRP routing protocol is configured. Answer: D Explanation: Now let’s find out the range of the networks on serial link: For the network 192. The serial interfaces of the routers are not on the same subnet.65/27: Increment: 32 Network address: 192.1. Assuming routing is properly configured. R2 and R3 are connected to the switches SW1 and SW2. You are required to troubleshoot and resolve the EIGRP issues between the various routers. The Fa0/0 interface on RouterA is on a subnet that can't be used.1.1. Use the appropriate show commands to troubleshoot the issues.63 For the network 192. The Fa0/0 interface on RouterB is using a broadcast address. R2. B.62/27: Increment: 32 Network address: 192.95 -> These two IP addresses don’t belong to the same network and they can’t see each other.(Topic 7) Scenario Refer to the topology. Your company has connected the routers R1.1. SW1 and SW2 are also connected to the routers R4 and R5. what is the cause of this problem? A.168. 266 .168. respectively.

267 .

268 .

269 .

270 .

5/32.4. The interfaces are shutdown.0 network is displayed.0. Why are the interfaces missing? A.AS numbers . so only the 10.The loopback interfaces on R4 with the IP addresses of 10. B.4.6/32 are not appearing in the routing table of R5. so they are not being advertised. The loopback addresses haven't been advertised. and 10.4. Automatic summarization is enabled. Answer: B Explanation: For an EIGRP neighbor to form.4.Authentication method and key strings Here. D. we see that R4 is configured for EIGRP AS 2. when it should be AS 1. and the network command is missing on R4. 10.K values . C.4.4/32. R4 has been incorrectly configured to be in another AS.0. the following must match: . 271 .4. so it does not peer with R5.Neighbors must be in the same subnet .

in an improperly implemented redundant topology E. when upper-layer protocols require high reliability D.Question No : 292 . 272 . It is an example of an improperly implemented redundant topology. after broken links are re-established C.(Topic 7) In which circumstance are multiple copies of the same unicast frame likely to be transmitted in a switched LAN? A. when a dual ring topology is in use Answer: D Explanation: If we connect two switches via 2 or more links and do not enable STP on these switches then a loop (which creates multiple copies of the same unicast frame) will occur. during high traffic periods B.

176/28 .router has fourth assignable host address in subnet Serial network is 192.router has last assignable host address in the subnet. 1.165.Question No : 293 CORRECT TEXT . the actual information will prevail. Enable. please note the following. Name or the router is xxx 2. The password to allow telnet access to the router is xxx 5. secret password is xxx 3. Interfaces should be enabled.0/27 . IP information 273 .0. Password In access user EXEC mode using the console is xxx 4.201. secret password is cisco The password to access user EXEC mode using the console is cisco2 The password to allow telnet access to the router is cisco3 IPV4 addresses must be configured as follows: Ethernet network 209. Complete the network installation by performing the initial router configurations and configuring R1PV2 routing using the router command line interface (CLI) on the RC.(Topic 7) Central Florida Widgets recently installed a new router in their office. Router protocol is RIPV2 Attention: In practical examinations. Configure the router per the following requirements: Name of the router is R2 Enable.2.

190 255.0 R2(config-router)#network 192.Answer: Router>enable Router#config terminal Router(config)#hostname R2 R2(config)#enable secret Cisco 1 R2(config)#line console 0 R2(config-line)#password Cisco 2 R2(config-line)#exit R2(config)#line vty 0 4 R2(config-line)#password Cisco 3 R2(config-line)#login R2(config-line)#exit R2(config)#interface faO/0 R2(config-if)#ip address 209. R2. and R3 with serial links.2. respectively.201. The EIGRP routing protocol is configured. 274 .165.240 R2(config-if)#no shutdown R2(config-if)#exit R2(config)#router rip R2(config-router)#version 2 R2(config-router)#network 209. R2 and R3 are connected to the switches SW1 and SW2.224 R2(config)#interface s0/0/0 R2(config-if)#ip address 192.201. SW1 and SW2 are also connected to the routers R4 and R5.165.255. You are required to troubleshoot and resolve the EIGRP issues between the various routers. Your company has connected the routers R1.2.176 R2(config-router)#end R2#copy run start Question No : 294 .255.0.0.4 255.(Topic 7) Scenario Refer to the topology.255. Use the appropriate show commands to troubleshoot the issues.255.

275 .

276 .

277 .

278 .

Answer: C Explanation: The link from R1 to R6 is shown below: 279 . D. The passive interface command is enabled. What is the cause for this misconfiguration? A. The network command is missing. The K values mismatch. C. The AS does not match. B.Router R6 does not form an EIGRP neighbor relationship correctly with router R1.

168.As you can see. they are both using e0/0.16. The IP addresses are in the 192.0 network: 280 .

But when we look at the EIGRP configuration.E Explanation: Each packet that is forwarded within a router or switch is examined for a set of IP packet attributes.16. Question No : 295 . ingress interface E.D.(Topic 7) What are three values that must be the same within a sequence of packets for Netflow to consider them a network flow? (Choose three. These attributes are the IP packet identity or fingerprint of the packet and 281 .0” command is missing on R6. source MAC address C. IP next-hop Answer: A.) A. egress interface D.168. destination IP address F. source IP address B. the “network 192.

(Topic 7) Refer to the exhibit. It is suspected that the cable connected to switch port Fa0/9 on Switch1 is disconnected. A problem with network connectivity has been observed. This methodology of fingerprinting or determining a flow is scalable because a large amount of network information is condensed into a database of NetFlow information called the NetFlow cache. IP Packet attributes used by NetFlow: • IP source address • IP destination address • Source port • Destination port • Layer 3 protocol type • Class of Service • Router or switch interface All packets with the same source/destination IP address. Traditionally. an IP Flow is based on a set of 5 and up to 7 IP packet attributes. source/destination ports. Reference: http://www. What would be an effect of this 282 .cisco.html Question No : 296 . protocol interface and class of service are grouped into a flow and then packets and bytes are tallied.determine if the packet is unique or similar to other packets.com/c/en/us/products/collateral/ios-nx-os-software/iosnetflow/prod_white_paper0900aecd80406232.

Then normal network function would resume. For less than a minute. Host B would not be able to access the server in VLAN9. D.(Topic 7) Which protocol can cause overload on a CPU of a managed device? A. Question No : 297 . WCCP C. You can determine the cause of high CPU use in a router by using the output of the show 283 . messages like this might appear in the router console: %SNMP-3-CPUHOG: Processing [chars] of [chars] They mean that the SNMP agent on the device has taken too much time to process a request. SNMP Answer: D Explanation: Sometimes. IP SLA D. The actual mechanics of how bridges communicate and how the STP algorithm works will be discussed at length in the following topics. Answer: D Explanation: Spanning-Tree Protocol (STP) is a Layer 2 protocol that utilizes a special-purpose algorithm to discover physical loops in a network and effect a logical loop-free topology.cable being disconnected? A. In addition. Note that the terms bridge and switch are used interchangeably when discussing STP. STP creates a loop-free tree structure consisting of leaves and branches that span the entire Layer 2 network. Host B would not be able to access the server in VLAN9 until the cable is reconnected. C. Netflow B. B. connections between switches are assumed to be trunks. The transfer of files from Host B to the server in VLAN9 would be significantly slower. unless otherwise indicated. Communication between VLAN3 and the other VLANs would be disabled.

switches. Answer: C Explanation: Host1 tries to communicate with Host2. F. According to the topology. What is the problem? A. The link between Switch1 and Router1 is down. A network administrator attempts to ping Host2 from Host1 and receives the results that are shown. printers…). Note: A managed device is a part of the network that requires some form of monitoring and management (routers.(Topic 7) Refer to the exhibit. servers. The link between Host1 and Switch1 is down. we can infer that the link between Router1 and Router2 is down. The link between Router1 and Router2 is down. E. workstations. The default gateway on Host1 is incorrect. Interface Fa0/0 on Router1 is shutdown.process cpu command. The message destination host unreachable from Router1 indicates that the problem occurs when the data is forwarded from Host1 to Host2. 284 . D. B. TCP/IP is not functioning on Host1 C. Question No : 298 .

The command ping is often used to verify the network connectivity. which is a network layer protocol used to propagate control message between host and router. access layer D. Question No : 300 . Your company has decided to connect the main office with three 285 . so it works at the network layer.1 and sees the output as shown.(Topic 7) Scenario: Refer to the topology. At which OSI layer is the problem? A. network layer Answer: E Explanation: The command ping uses ICMP protocol. data link layer B. application layer C.10.10.Question No : 299 .(Topic 7) Refer to the exhibit. An administrator pings the default gateway at 10. session layer E.

other remote branch offices using point-to-point serial links. 286 . You are required to troubleshoot and resolve OSPF neighbor adjacency issues between the main office and the routers located in the remote branch offices.

287 .

288 .

Configure no shutdown command. Which option would fix the issue? A. configure no ip ospf hello-interval 25. R2 ethernet0/1 and R3 ethernet0/0 are configured with a non-default OSPF hello 289 . R1 ethernet0/1 is shutdown. B. C. R1 ethernet0/1 configured with a non-default OSPF hello interval of 25.R1 does not form an OSPF neighbor adjacency with R2.

interval of 25; configure no ip ospf hello-interval 25.
D. Enable OSPF for R1 ethernet0/1; configure ip ospf 1 area 0 command under
ethernet0/1.
Answer: B
Explanation:
Looking at the configuration of R1, we see that R1 is configured with a hello interval of 25
on interface Ethernet 0/1 while R2 is left with the default of 10 (not configured).

Question No : 301 - (Topic 7)
What are the benefits of using Netflow? (Choose three.)
A. Network, Application & User Monitoring
B. Network Planning
C. Security Analysis
D. Accounting/Billing
Answer: A,C,D
Explanation:

290

NetFlow traditionally enables several key customer applications including:
+ Network Monitoring – NetFlow data enables extensive near real time network monitoring
capabilities. Flow-based analysis techniques may be utilized to visualize traffic patterns
associated with individual routers and switches as well as on a network-wide basis
(providing aggregate traffic or application based views) to provide proactive problem
detection, efficient troubleshooting, and rapid problem resolution.
+ Application Monitoring and Profiling – NetFlow data enables network managers to gain a
detailed, time-based, view of application usage over the network. This information is used
to plan, understand new services, and allocate network and application resources (e.g.
Web server sizing and VoIP deployment) to responsively meet customer demands.
+ User Monitoring and Profiling – NetFlow data enables network engineers to gain detailed
understanding of customer/user utilization of network and application resources. This
information may then be utilized to efficiently plan and allocate access, backbone and
application resources as well as to detect and resolve potential security and policy
violations.
+ Network Planning – NetFlow can be used to capture data over a long period of time
producing the opportunity to track and anticipate network growth and plan upgrades to
increase the number of routing devices, ports, or higher- bandwidth interfaces. NetFlow
services data optimizes network planning including peering, backbone upgrade planning,
and routing policy planning. NetFlow helps to minimize the total cost of network operations
while maximizing network performance, capacity, and reliability. NetFlow detects unwanted
WAN traffic, validates bandwidth and Quality of Service (QOS) and allows the analysis of
new network applications. NetFlow will give you valuable information to reduce the cost of
operating your network.
+ Security Analysis – NetFlow identifies and classifies DDOS attacks, viruses and worms in
real-time. Changes in network behavior indicate anomalies that are clearly demonstrated in
NetFlow data. The data is also a valuable forensic tool to understand and replay the history
of security incidents.
+ Accounting/Billing – NetFlow data provides fine-grained metering (e.g. flow data includes
details such as IP addresses, packet and byte counts, timestamps, type-of-service and
application ports, etc.) for highly flexible and detailed resource utilization accounting.
Service providers may utilize the information for billing based on time-of-day, bandwidth
usage, application usage, quality of service, etc. Enterprise customers may utilize the

291

information for departmental charge-back or cost allocation for resource utilization.

Question No : 302 - (Topic 7)
Refer to the exhibit.

The two connected ports on the switch are not turning orange or green. What would be the
most effective steps to troubleshoot this physical layer problem? (Choose three.)
A. Ensure that the Ethernet encapsulations match on the interconnected router and switch
ports.
B. Ensure that cables A and B are straight-through cables.
C. Ensure cable A is plugged into a trunk port.
D. Ensure the switch has power.
E. Reboot all of the devices.
F. Reseat all cables.
Answer: B,D,F
Explanation:

292

The ports on the switch are not up indicating it is a layer 1 (physical) problem so we should
check cable type, power and how they are plugged in.

Question No : 303 CORRECT TEXT - (Topic 7)
CCNA.com has a small network that is using EIGRP as its IGP. All routers should be
running an EIGRP AS number of 12. Router MGT is also running static routing to the ISP.
CCNA.com has recently added the ENG router. Currently, the ENG router does not have
connectivity to the ISP router. All over interconnectivity and Internet access for the existing
locations of the company are working properly.
The task is to identify the fault(s) and correct the router configuration(s) to provide full
connectivity between the routers.
Access to the router CLI can be gained by clicking on the appropriate host.
All passwords on all routers are cisco.
IP addresses are listed in the chart below.
MGT
Fa0/0 – 192.168.77.33
S1/0 – 198.0.18.6
S0/0 – 192.168.27.9
S0/1 – 192.168.50.21
ENG
Fa0/0 – 192.168.77.34
Fa1/0 – 192.168.12.17
Fa0/1 – 192.168.12.1
Parts1
293

Fa0/0 – 192.168.12.33
Fa0/1 – 192.168.12.49
S0/0 – 192.168.27.10
Parts2
Fa0/0 – 192.168.12.65
Fa0/1 – 192.168.12.81
S0/1 – 192.168.50.22

294

Answer: On the MGT Router:
Config t
Router eigrp 12
Network 192.168.77.0

Question No : 304 DRAG DROP - (Topic 7)
Drag each category on the left to its corresponding router output line on the right. Each
router output line is the result of a show ip interface command. Not all categories are
used.

Answer:

Explanation:

295

A simple way to find out which layer is having problem is to remember this rule: “the first
statement is for Layer 1, the last statement is for Layer 2 and if Layer 1 is down then surely
Layer 2 will be down too”, so you have to check Layer 1 before checking Layer 2. For
example, from the output “Serial0/1 is up, line protocol is down” we know that it is a layer 2
problem because the first statement (Serial0/1 is up) is good while the last statement (line
protocol is down) is bad. For the statement “Serial0/1 is down, line protocol is down”, both
layers are down so the problem belongs to Layer 1.
There is only one special case with the statement “…. is administrator down, line protocol is
down”. In this case, we know that the port is currently disabled and shut down by the
administrators.

Question No : 305 - (Topic 7)
Scenario:
Refer to the topology. Your company has decided to connect the main office with three
other remote branch offices using point-to-point serial links.
You are required to troubleshoot and resolve OSPF neighbor adjacency issues between
the main office and the routers located in the remote branch offices.

296

297 .

298 .

299 .

There is an OSPF hello and dead interval mismatch. There is a Layer 2 issue. What is causing the problem? A. an encapsulation mismatch on serial links. There is an area ID mismatch.An OSPF neighbor adjacency is not formed between R3 in the main office and R4 in the Branch1 office. Answer: A Explanation: A show running-config command on R3 and R4 shows that R4 is incorrectly configured for area 2: 300 . The R3 router ID is configured on R4. D. B. C.

C. To detect suboptimal routing in the network. To confirm the appropriate amount of bandwidth that has been allocated to each Class of Service. To report and alert link up / down instances. + Validation of QoS parameters Confirm that appropriate bandwidth has been allocated to each Class of Service (CoS) and that no CoS is over. + Security and anomaly detection NetFlow can be used for anomaly detection and worm diagnosis along with applications such as Cisco CS-Mars. Answer: A. + Detection of unauthorized WAN traffic Avoid costly upgrades by identifying the applications causing congestion. B. bandwidth hogs.) A.F Explanation: NetFlow facilitates solutions to many common problems encountered by IT professionals. + Analyze new applications and their network impact Identify new application network loads such as VoIP or remote site additions. and bandwidth utilization. bandwidth hogs and bandwidth utilization quickly with command line interface or reporting tools.-> F is correct. -> A is correct. To identify applications causing congestion. D. -> D is correct.D.or under-subscribed. E. To authorize user network access. + Reduction in peak WAN traffic Use NetFlow statistics to measure WAN traffic improvement from application-policy changes. 301 .(Topic 7) What are three reasons to collect Netflow data on a company network? (Choose three. + Troubleshooting and understanding network pain points Diagnose slow network performance. To diagnose slow network performance. F. understand who is utilizing the network and the network top talkers.Question No : 306 .

Click the console connected to RouterC and issue the appropriate commands to answer the questions. 302 .(Topic 7) An administrator is trying to ping and telnet from SwitchC to RouterC with the results shown below.Question No : 307 .

303 .

304 .

305 .

Correctly assign an IP address to interface fa0/1.Which will fix the issue and allow ONLY ping to work while keeping telnet disabled? A. 306 .

B. Interface name C. Remove access-group 106 in from interface fa0/0 and add access-group 104 in. Port numbers D. Remove access-group 102 out from interface s0/0/0 and add access-group 114 in E. Question No : 308 .(Topic 7) What are the three things that the Netflow uses to consider the traffic to be in a same flow? (Choose three) A.C. Remember that the access list 104 is applied on the inbound direction so the 5th line “access-list 104 deny icmp any any echo-reply” will not affect our icmp traffic because the “echo-reply” message will be sent over the outbound direction. MAC address Answer: A. Remove access-group 106 in from interface fa0/0 and add access-group 115 in. IP address B. The 3rd line denies all telnet traffic and the 4th line allows icmp traffic to be sent (ping). C. L3 protocol type E. Change the ip access-group command on fa0/0 from “in” to “out”. D. Answer: E Explanation: Let’s have a look at the access list 104: The question does not ask about ftp traffic so we don’t care about the two first lines.D Explanation: 307 .

30/28 number of inside hosts – 14 308 .168.17 – 192. IP Packet attributes used by NetFlow: + IP source address + IP destination address + Source port + Destination port + Layer 3 protocol type + Class of Service + Router or switch interface Question No : 309 CORRECT TEXT . an IP Flow is based on a set of 5 and up to 7 IP packet attributes. Functionality can be tested by clicking on the host provided for testing.(Topic 7) The following have already been configured on the router: The basic router configuration The appropriate interfaces have been configured for NAT inside and NAT outside. The appropriate static routes have also been configured (since the company will be a stub network.105 .168.192. Configuration information: router name – Weaver inside global addresses – 198. The task is to complete the NAT configuration using all IP addresses assigned by the ISP to provide Internet access for the hosts in the Weaver LAN.100.110/29 inside local addresses .What is an IP Flow? Each packet that is forwarded within a router or switch is examined for a set of IP packet attributes. no routing protocol will be required) All passwords have been temporarily set to “cisco”.100.184. Traditionally.18.198.18. These attributes are the IP packet identity or fingerprint of the packet and determine if the packet is unique or similar to other packets.184.

Overload keyword allows to map multiple IP addresses to a single registered IP address 309 .255.0.100.105 to 198.105 to 198.A network associate is configuring a router for the weaver company to provide internet access.184.248 Create a standard access control list that permits the addresses that are to be translated.184.168.17 to 192.105 198. which means a source address from 192.100.100.18.110. The ISP has provided the company six public IP addresses of 198. Weaver(config)#access-list 1 permit 192.30.17 – 192.184.30.184.168. Answer: The company has 14 hosts that need to access the internet simultaneously but we just have 6 public IP addresses from 198.15 Establish dynamic source translation.16 0. into an address from the pool named mypool (the pool contains addresses from 198.18. Weaver(config)#ip nat inside source list 1 pool mypool overload This command translates all source addresses that pass access list 1. Weaver(config)#ip nat pool mypool 198.18.110 netmask 255.18.168.184. The hosts in the company LAN have been assigned private space addresses in the range of 192.184.18.18. The company has 14 hosts that need to access the internet simultaneously.184.100.255. specifying the access list that was defined in the prior step.105 198.184.168.100.110/29. Therefore we have to use NAT overload (or PAT) Double click on the Weaver router to open it Router>enable Router#configure terminal First you should change the router's name to Weaver Router(config)#hostname Weaver Create a NAT pool of global addresses to be allocated with their netmask.18.168.110).18.0.

we should save all your work with the following command: Weaver#copy running-config startup-config Check your configuration by going to "Host for testing" and type: C :\>ping 192. The routers cannot establish an adjacency relationship on their common Ethernet link. The OSPF area is not configured properly.(many-to-one) by using different ports. 310 . The graphic shows the output of the show ip ospf interface e0 command for routers R1 and R2.2. just for your understanding: Weaver(config)#interface fa0/0 Weaver(config-if)#ip nat inside Weaver(config-if)#exit Weaver(config)#interface s0/0 Weaver(config-if)#ip nat outside Weaver(config-if)#end Finally. The priority on R1 should be set higher.(Topic 7) A network administrator is troubleshooting the OSPF configuration of routers R1 and R2.2. This is how to configure the NAT inside and NAT outside.0. C. what is the cause of this problem? A. The cost on R1 should be set higher. B.0.114 Question No : 310 .114 The ping should work well and you will be replied from 192. The question said that appropriate interfaces have been configured for NAT inside and NAT outside statements. Based on the information in the graphic.

show ip route E. The dead interval is also set to 20 on R1 but it is 40 on R2. and winipcfg are PC commands.D. F.) A. E.(Topic 7) Scenario Refer to the topology. winipcfg F. Your company has decided to connect the main office with three other remote branch offices using point-to-point serial links.D. ipconfig D. tracert C. Question No : 312 . ping B.F Explanation: Ping. The hello and dead timers are not configured properly. Question No : 311 . not IOS. the hello and dead intervals must match and here we can see the hello interval is set to 5 on R1 and 10 on R2. Tracert. The OSPF process ID numbers must match. A backup designated router needs to be added to the network. 311 . and show interfaces are all valid troubleshooting IOS commands. show ip route. Answer: D Explanation: In OSPF. ipconfig. show interfaces Answer: A.(Topic 7) Which router IOS commands can be used to troubleshoot LAN connectivity problems? (Choose three.

312 .You are required to troubleshoot and resolve OSPF neighbor adjacency issues between the main office and the routers located in the remote branch offices.

313 .

314 .

There is an OSPF hello and dead interval mismatch. What is causing the problem? A. 315 .An OSPF neighbor adjacency is not formed between R3 in the main office and R5 in the Branch2 office. C. B. There is an area ID mismatch. a password mismatch. There is a PPP authentication issue.

D. The flow monitor cache is automatically created at the time the flow monitor is applied to the first interface. There is a missing network command in the OSPF process on R5. flow sampler D. Flow data is collected from the network traffic during the monitoring process based on the key and nonkey fields in the record. They are 50 and 200 on R3 and 10 and 40 on R5. flow monitor B. You add the record to the flow monitor after you create the flow monitor. Question No : 313 . Answer: C Explanation: The “show ip ospf interface command on R3 and R5 shows that the hello and dead intervals do not match. Flow monitors consist of a record and a cache.(Topic 7) What Netflow component can be applied to an interface to track IPv4 traffic? A. flow record C. which is configured for the flow monitor and stored in the flow 316 . flow exporter Answer: A Explanation: Flow monitors are the Flexible NetFlow component that is applied to interfaces to perform network traffic monitoring.

R2 and R3 are connected to the switches SW1 and SW2. The EIGRP routing protocol is configured. SW1 and SW2 are also connected to the routers R4 and R5. 317 . Your company has connected the routers R1. For example. and R3 with serial links.monitor cache. Use the appropriate show commands to troubleshoot the issues. R2. the following example creates a flow monitor named FLOW-MONITOR-1 and enters Flexible NetFlow flow monitor configuration mode: Router(config)# flow monitor FLOW-MONITOR-1 Router(config-flow-monitor)# Question No : 314 . You are required to troubleshoot and resolve the EIGRP issues between the various routers. respectively.(Topic 7) Scenario Refer to the topology.

318 .

319 .

320 .

The traffic goes through R2. The traffic is unequally load-balanced over R2 and R3. The traffic goes through R3. D.Which path does traffic take from R1 to R5? A. 321 . C. B. The traffic is equally load-balanced over R2 and R3.

Then. using the “show ip route” command on R1 we can see that to reach 10. which we see from the diagram is the link to R2.) 322 .5.(Topic 7) Refer to the exhibit.5 and 10.Answer: A Explanation: Using the “show ip int brief command” on R5 we can see the IP addresses assigned to this router.5. Which of the following will correct the problems? (Choose two. Question No : 315 .55 the preferred path is via Serial 1/3. The network shown in the diagram is experiencing connectivity problems.5.5.

Mixed Questions Question No : 316 . Answer: B. D.254/24 VLAN1 Fa0/0.1.0 Topic 8. C.0 Gateway : 10. Their upload speed is about 10 percent of their download speed. D.2.10.2. C.12 Mask : 255. Configure the gateway on Host B as 10.1.D Explanation: The switch 1 is configured with two VLANs: VLAN1 and VLAN2.1.1.(Topic 8) What are three characteristics of satellite Internet connections? (Choose three. They are usually at least 10 times faster than analog modem connections.2.2.A. They are usually faster than cable and DSL connections. E.1.255. Configure the gateway on Host A as 10.1. The layer3 addressing information of Host B should be modified as follows: Address : 10.255.254.126 Mask : 255.1.224.255.10.1.2.255. 323 . B.0 Gateway : 10.255.240.255.1.254 The IP information of member Host B in VLAN2 is as follows: Address : 10. Configure the masks on both hosts to be 255.2 -.254/24 VLAN2 It is obvious that the configurations of the gateways of members in VLAN2 and the associated network segments are wrong.1.) A. They are frequently used by rural users without access to other high-speed connections.1.1.254 The configuration of sub-interface on router 2 is as follows: Fa0/0.2.255. F.1.X Mask : 255. Configure the IP address of Host B as 10.1.255.255. Configure the masks on both hosts to be 255.1.1 -. B.1.1.2.255. The IP information of member Host A in VLAN1 is as follows: Address : 10. Configure the IP address of Host A as 10.1.

1 host B 192. host A 192.17.4 The Finance Web Server has been assigned an address of 172.78.146. Other types of access from host C to the Finance Web Server should be blocked.B. This access list can contain no more than three statements that meet these requirements.65.78.1 – 192.168. The Core connection uses an IP address of 198.209.78. They use radio waves to communicate with cellular phone towers.C Question No : 317 CORRECT TEXT .146. The Public Web Server in the Server LAN has been assigned an address of 172.(Topic 8) A corporation wants to add security to its network.3 host D 192. The computers in the Hosts LAN have been assigned addresses of 192. 324 .18.18. All passwords have been temporarily set to “cisco”.22.78. Answer: A. You have been tasked to create and apply a numbered access list to a single outbound interface.168. They require a WiMax tower within 30 miles of the user location.2 host C 192. F. The requirements are: Host C should be able to use a web browser (HTTP) to access the Finance Web Server.78.22. Access to the router CLI can be gained by clicking on the appropriate host.168.254.168.168.168.78. All access from hosts in the Core or local LAN to the Finance Web Server should be blocked. All hosts in the Core and on local LAN should be able to access the Public Web Server.E.

325 .

326 .

Answer: Please see below explanation part for details answer steps: Explanation: We should create an access-list and apply it to the interface that is connected to the Server LAN because it can filter out traffic from both S2 and Core networks. To see which interface this is.png 327 . use the “show ip int brief” command: Macintosh HD:Users:danielkeller:Desktop:Screen Shot 2015-11-17 at 3.34 PM.24.

22.22.3 host 172. If your configuration is correct then you can access it. just click on host C to open its web browser.18) Corp1(config)#access-list 100 permit ip host 172.17 via HTTP (port 80). B and D) and check to make sure you can’t access Finance Web Server from these hosts. Corp1#configure terminal Our access-list needs to allow host C – 192.109.17 eq 80 Then.125. Click on other hosts (A.168125.22.109.22. apply this access-list to Fa0/1 interface (outbound direction) Corp1(config)#interface fa0/1 Corp1(config-if)#ip access-group 100 out Notice: We have to apply the access-list to Fa0/1 interface (not Fa0/0 interface) so that the access-list can filter traffic coming from both the LAN and the Core networks. save the configuration Corp1(config-if)#end Corp1#copy running-config startup-config 328 .109.168.109.17 to check if you are allowed to access Finance Web Server or not.109. Then.22.22.18 any Finally.From this. we know that the servers are located on the fa0/1 interface. All access from hosts in the Core or local LAN to the Finance Web Server should be blocked.109.18. our next two instructions are these: Other types of access from host C to the Finance Web Server should be blocked.17 Our last instruction is to allow all hosts in the Core and on the local LAN access to the Public Web Server (172. so we will place our numbered access list here in the outbound direction. repeat to make sure they can reach the public server at 172. blocking all other access to the finance web server: Corp1(config)#access-list 100 deny ip any host 172.109. This can be accomplished with one command (which we need to do as our ACL needs to be no more than 3 lines long).3 to the Finance Web Server 172. Finally. To verify. so our first line is this: Corp1(config)#access-list 100 permit tcp host 192.22. In the address box type http://172.

Question No : 318 .) 329 . Telnet access requires a new password. Telnet access is denied.(Topic 8) Which two features can dynamically assign IPv6 addresses? (Choose two.B Question No : 320 .) A. no password is required for telnet access. DHCP C. B. What is the result of setting the no login command? A. Which two statements are true about the loopback address that is configured on RouterB? (Choose two.(Topic 8) Refer to the exhibit. NHRP D. ISATAP tunneling Answer: A. IPv6 stateless autoconfiguration B. IPv6 stateful autoconfiguration E. Telnet access requires a new password at the first login.(Topic 8) Refer to the exhibit. Answer: D Question No : 319 . C. D.

D.C Explanation: Explanation A loopback interface never comes down even if the link is broken so it provides stability for the OSPF process (for example we use that loopback interface as the router-id) The router-ID is chosen in the order below: + The highest IP address assigned to a loopback (logical) interface. It provides stability for the OSPF process on RouterB.0. It specifies that the router ID for RouterB should be 10. It decreases the metric for routes that are advertised from RouterB. the highest IP address of all active router’s physical interfaces will be chosen. It indicates that RouterB should be elected the DR for the LAN. It ensures that data will be forwarded by RouterB.0. E. Answer: B.A.1. C. -> The loopback interface will be chosen as the router ID of RouterB – 330 .+ If a loopback interface is not defined. B.

Telnet B. Define global and local interfaces. Define inside and outside interfaces. Which user-mode password has just been set? A.(Topic 8) In which three ways is an IPv6 header simpler than an IPv4 header? (Choose three. Auxiliary C.(Topic 8) Refer to the exhibit. D. Answer: A Question No : 323 . C. Console Answer: A Question No : 322 . Define public and private IP addresses.(Topic 8) What is the first step in the NAT configuration process? A. Define IP address pools. B. SSH D.Question No : 321 .) 331 .

(Topic 8) Which command can you enter to set the default route for all traffic to an interface? 332 . locate an IOS image for booting C. and IPv4 headers use an 8-bit TTL field. terminal monitor D. show logging | redirect flashioutput. IPv6 headers use a 4-bit TTL field. B.C Question No : 326 . logging host ip-address C. set the configuration register Answer: A Question No : 325 . E. snmp-server enable traps syslog Answer: B. IPv6 headers use the Fragment Offset field in place of the IPv4 Fragmentation field.(Topic 8) What is the purpose of the POST operation on a router? A.A. Answer: A. IPv6 headers eliminate the IPv4 Checksum field. can enable debug output to a remote location? (Choose two) A.(Topic 8) Which two Cisco IOS commands. C. used in troubleshooting.B. IPv6 uses an extension header instead of the IPv4 Fragmentation field. enable a TFTP server D. Unlike IPv4 headers. determine whether additional hardware has been added B. IPv6 headers use a smaller Option field size than IPv4 headers. no logging console B.C Question No : 324 . F. D.txt E. IPv6 headers have a fixed length.

0. fd15:0db8::7:3:4F:527B E.0. router(config)#ip route 0. fd15:db8:0::700:3:4F:527B D. The groups are separated by colons (:).255 GigabitEthernet0/1 C. the example address may be written as: 2001:db8:85a3:0:0:8a2e:370:7334 Groups of zeroes One consecutive group of zero value may be replaced with a single empty group using two consecutive colons (::). router(config)#ip route 0.0 255. router(config-router)#default-information originate always Answer: A Question No : 327 .[1] Thus. each group representing 16 bits (two octets).0 GigabitEthernet0/1 B.0. The full representation of eight 4-digit groups may be simplified by several techniques.(Topic 8) In which two formats can the IPv6 address fd15:0db8:0000:0000:0700:0003:400F:572B be written? (Choose two. fd15:0db8:0000:0000:700:3:400F:527B B. eliminating parts of the representation. Leading zeroes Leading zeroes in a group may be omitted.0.[1] Thus.0. the example address can be further simplified: 2001:db8:85a3::8a2e:370:7334 333 . but IETF recommendations suggest the use of lower case letters.) A.255.A. fd15:db8::700:3:400F:572B Answer: D. An example of an IPv6 address is: 2001:0db8:85a3:0000:0000:8a2e:0370:7334 The hexadecimal digits are case-insensitive.255. fd15::db8::700:3:400F:527B C.0 0.0.E Explanation: An IPv6 address is represented as eight groups of four hexadecimal digits. router(config-router)#default-information originate D.

Answer: A. and distribution of software. IP multicast delivers application source traffic to multiple receivers without burdening the source or the receivers while using a minimum of network bandwidth. It burdens the source host without affecting remote hosts. E.E Explanation: IP multicast is a bandwidth-conserving technology that reduces traffic by simultaneously delivering a single stream of information to potentially thousands of corporate recipients and homes. C. B. C. Answer: D. and news. distance learning. D.) A. It uses a minimum amount of network bandwidth.Question No : 328 . E. Applications that take advantage of multicast include video conferencing.) A. corporate communications. It is the most efficient way to deliver data to multiple receivers.C Question No : 329 .B. It simultaneously delivers multiple streams of data. B. RIP is a link-state protocol. Updates are sent to a multicast address by default. Updates are sent to a broadcast address. Multicast packets are replicated in the network at the point where paths diverge by Cisco routers enabled with Protocol Independent Multicast (PIM) and other supporting multicast protocols. D.(Topic 8) Which three statements about link-state routing are true? (Choose three. resulting in the most efficient delivery of data to multiple receivers. It uses split horizon. OSPF is a link-state protocol. It is bandwidth-intensive. stock quotes.(Topic 8) Which two statements about IPv4 multicast traffic are true? (Choose two. F. Routes are updated when a change in topology occurs.(Topic 8) 334 . Question No : 330 .

The ISP is blocking the traffic. E. The tunnel interface is down. The tunnel interface IP address is misconfigured. An ACL is blocking the outbound traffic. SDM Answer: B. TTD D.(Topic 8) Which two security appliances will you use in a network? (Choose two. F.) A. Scan Timer Answer: A Question No : 331 .Which IPv6 header field is equivalent to the TTL? A.(Topic 8) Which three circumstances can cause a GRE tunnel to be in an up/down state? (Choose three. Hop Limit B.D Explanation: Normally.) A. B.E Question No : 332 . The tunnel address is routed through the tunnel itself. The tunnel 335 . Hop Count E. ATM B. IOX E. IPS F. Flow Label C. IDS C. IOS D. D. a GRE Tunnel interface comes up as soon as it is configured and it stays up as long as there is a valid tunnel source address or interface which is up. C.C. Answer: B. A valid route to the destination address is missing from the routing table.

) A. interface down and mis-routed tunnel destination) are problems local to the router at the tunnel endpoints and do not cover problems in the intervening network. The interface displays a connected (up/up) state even when the duplex settings are mismatched. Keepalives on the GRE tunnel interface are used in order to solve this issue in the same way as keepalives are used on physical interfaces. RFC 1631 D. but are lost before they reach the other end of the tunnel. there were only three reasons for a GRE tunnel to shut down: There is no route to the tunnel destination address.(Topic 8) What are two reasons that duplex mismatches can be difficult to diagnose? (Choose two. This is true even if the other side of the tunnel has not been configured. The symptoms of a duplex mismatch may be intermittent. This means that a static route or PBR forwarding of packets via the GRE tunnel interface remains in effect even though the GRE tunnel packets do not reach the other end of the tunnel. B. even though an alternate route that uses PBR or a floating static route via another interface is potentially available.destination IP address must also be routable. For example.(Topic 8) Which technology allows a large number of private IP addresses to be represented by a smaller number of public IP addresses? A. These three rules (missing route. NTP C. RFC 1918 Answer: A Question No : 334 . these rules do not cover the case in which the GRE tunneled packets are successfully forwarded. Autonegotiation is disabled. Before GRE keepalives were implemented. so mismatches may be disguised by 336 . NAT B. This causes data packets that go through the GRE tunnel to be "black holed". Question No : 333 . D. The interface that anchors the tunnel source is down. Full-duplex interfaces use CSMA/CD logic. The route to the tunnel destination address is through the tunnel itself. C.

D Question No : 336 .collisions.(Topic 8) If all OSPF routers in a single area are configured with the same priority value. F. the router ID will be the first active interface that comes up on the router. the lowest IP address among its active interfaces E.) A. 1-Gbps interfaces are full-duplex by default. Answer: C. Multiple leased lines can share a router interface. Leased lines provide highly flexible bandwidth scaling. E. 337 . Leased lines provide inexpensive WAN access. the priority value until a loopback interface is configured Answer: C Explanation: Ordinarily the loopback interface would be selected as the router ID. If that particular interface has more then one IP address. C. then the highest address will be selected as the Router ID.B Question No : 335 . B. In the event that no loopback interface is configured. the highest IP address among its active interfaces D. Leased lines require little installation and maintenance expertise. Leased lines support up to T1 link speeds. the IP address of the console management interface C. Leased lines with sufficient bandwidth can avoid latency between endpoints. D.(Topic 8) Which two statements about using leased lines for your WAN infrastructure are true? (Choose two. the IP address of the first Fast Ethernet interface B. E. Answer: A. what value does a router use for the OSPF router ID in the absence of a loopback interface? A.

They are less costly than public IP addresses. They eliminate the necessity for NAT policies. C. but uses your router's public IP address to communicate. OSPF.(Topic 8) What are two benefits of private IPv4 IP addresses? (Choose two. Answer: A. A network printer residing in your home is assigned a private address so that only your family can print to your local printer. When a computer is assigned a private IP address. They can be assigned to devices without Internet connections. However.B Question No : 338 . OSPFv3 was developed to support IPv6 routing. and BGP are the only routing protocols that support IPv6.(Topic 8) 338 . There are three IP blocks (1 class A. a Network Address Translator (NAT) should be used. Link-local addresses are used to form routing adjacencies. Loopback addresses are used to form routing adjacencies. They are routed the same as public IP addresses. Answer: A. the local devices sees this computer via it's private IP address. B. They eliminate duplicate IP conflicts. C. and the personal computers within an organizations are usually assigned private IP addresses. 1 class B and 1 class C) reserved for a private use.) A. E. EIGRPv3 was developed to support IPv6 routing. D.) A. E. tablets and smartphones sitting behind your home. To allow direct access to a local device which is assigned a private IP address. The computers. D.Question No : 337 . B.C Explanation: What is private IP address?A private IP address is the address space allocated by InterNIC to allow organizations to create their own private network. the devices residing outside of your local network cannot directly communicate via the private IP address. EIGRP.(Topic 8) Which two statements about IPv6 and routing protocols are true? (Choose two. Question No : 339 .

B Question No : 341 . ASIC switching Answer: C Explanation: Cut and Through Cut and Through method has lowest latency. This is the fastest method of switching. This method also processes invalid frames. cut through switching D. ip flow egress E. store and-forward switching C. fragment-free switching B.(Topic 8) Which two commands can you enter to verify that a configured NetFlow data export is operational? (Choose two. In this method Switch only read first six bytes from frame after the preamble. Switch(config)#vlan 20 Switch(config)#Interface gig x/y Switch(config-if)#switchport access vlan 20 B.) A.(Topic 8) Which command sequence can you enter to create VLAN 20 and assign it to an interface on a switch? A. ip flow-export destination Answer: A. Question No : 340 . show ip cache flow C. interface ethernet 0/0 F. These six bytes are the destination address of frame. Switch(config)#Interface gig x/y 339 . show ip flow export B.Which switching method duplicates the first six bytes of a frame before making a switching decision? A. ip flow ingress D. Only advantage of this method is speed.

which will then be implemented by the APIC-EM Controller through its Southbound Interfaces. When you use the APIC-EM API. Only southbound API interfaces use a Service Abstraction Layer. Plug and Play (PnP) . switches and wireless controllers (including Wireless Access Points). programmatic control of your network elements. D. interfaces. 340 . and DELETE) with JSON syntax. Only southbound APIs allow program control of the network. GET. The APIC-EM GA release focus’s on the following key customer applications: Intelligent WAN (IWAN) . your applications will make network policy decisions. Both northbound and southbound APIs allow program control of the network. E... Only northbound API interfaces use a Service Abstraction Layer. Switch(config)#vlan 20 Switch(config)#Interface vlan 20 Switch(config-if)#switchport trunk allowed vlan 20 Answer: A Question No : 342 . Only northbound APIs allow program control of the network. The API is function rich and provides you with an easy-to-use. the policy) and the controller figures out how to implement that policy for you. and hosts.(Topic 8) Which two statements about northbound and southbound APIs are true? (Choose two. Thus you tell the network what you want (i. B.Switch(config-if)#vlan 20 Switch(config-vlan)#switchport access vlan 20 C. PUT.) A. The APIC-EM API is REST based and thus you will discover and control your network using HTTP protocol with HTTP verbs (i. POST.e. Switch(config)#vlan 20 Switch(config)#Interface vlan 20 Switch(config-if)#switchport trunk native vlan 20 D.automates the configuration of advanced IWAN features on Cisco 4000 Series Integrated Service Routers. C. F. The APIC-EM API provides you with the ability to think about your network at a higher policy level rather than how to implement that policy. Both northbound and southbound API interfaces use a Service Abstraction Layer.C Explanation: APIC-EM Northbound InterfaceThe APIC-EM Northbound Interface is the only API that you will need to control your network programmatically.e. Switch(config)#vlan 20 Switch(config)#Interface vlan 20 Switch(config-if)#switchport access vlan 20 E.delivers zero-touch deployment of Cisco Enterprise Network routers. Answer: B.

RSVP Answer: D Explanation: When implemented on all nodes in the path. D.(Topic 8) Which feature can you implement to reserve bandwidth for VoIP calls across the call path? A. Southbound InterfacesAlthough APIC-EM only exposes its Northbound Interfaces as an API. It enables the use of a secondary pool of IP addresses when the first pool is depleted. it is important that you understand how the Southbound Interface is built.EM works with legacy Cisco legacy products.Path Trace . Future APIC-EM releases will leverage other southbound technology such as NetConf as they become available. C.eases and accelerates the task of computing end-to-end application flow path. Answer: A Question No : 345 . round robin D. B.(Topic 8) 341 . Southbound Interfaces are implemented with a Service Abstraction Layer (SAL) which speak to network elements using SNMP and CLI (Command Line Interface) of the elements that make up the network. RSVP guarantees bandwidth for the call along the entire path for the entire duration of the call.(Topic 8) What is the effect of the overload keyword in a static NAT translation configuration? A. It enables the inside interface to receive traffic. Question No : 344 . PQ B. This is the only technique that achieves this level of accuracy. The use of the SNMP and CLI ensures that APIC. Question No : 343 . It enables the outside interface to forward traffic. It enables port address translation. CBWFQ C.

C.bin D. It can disable the overload command. It can cause too many addresses to be assigned to the same interface. B. Answer: A Question No : 346 .12 C.bin Answer: A. Router(config)#boot system rom c7301-advipservicesk9-mz. Router(config)# boot system flash c4500-p-mz.12 B. show ip dhcp database 10.(Topic 8) Which command can you execute to set the user inactivity timer to 10 seconds? 342 .bin F.bin B.bin C.) A.0. D. Router(config)#boot flash:c180x-adventerprisek9-mz-124-6T.122-23f. It can lead to overloaded resources on the router.2.B. Router(config)# boot system tftp c7300-js-mz. Router> boot flash:c180x-adventerprisek9-mz-124-6T.(Topic 8) Which command can you enter to display duplicate IP addresses that the DHCP server assigns? A. show ip dhcp conflict 10.12 Answer: A Question No : 348 . show ip dhcp server statistics D.2.121-20. Router(config)#boot bootldr bootflash:c4500-jk9s-mz. It prevents the correct translation of IP addresses on the inside network.124-24.0.(Topic 8) Which three commands can you use to set a router boot image? (Choose three.T4.bin E.SB8a.C Question No : 347 .2.122-33. show ip dhcp binding 10.What is the danger of the permit any entry in a NAT access list? A.0.

When you enable BPDU guard on the switch. the PortFast mode is supported only on nontrunking access ports because these ports typically do not transmit or receive BPDUs. SW1(config-line)#exec-timeout 10 C.(Topic 8) When an interface is configured with PortFast BPDU guard. spanning tree loops can occur because BPDUs are still being transmitted and received on those ports. It becomes the root bridge for the configured VLAN. SW1(config-line)#exec-timeout 0 10 B. It goes into a down/down state. B. PortFastconfigured interfaces do not receive BPDUs. It continues operating normally. Because PortFast can be enabled on nontrunking ports connecting two switches. Question No : 350 . SW1(config-line)#absolute-timeout 10 Answer: A Question No : 349 . It goes into an errdisable state. spanning tree shuts down PortFast-configured interfaces that receive BPDUs instead of putting them into the spanning tree blocking state. The most secure implementation of PortFast is to enable it only on ports that connect end stations to switches. BPDU guard provides a secure response to invalid configurations because the administrator must manually put the interface back in service. In a valid configuration. PortFast BPDU guard prevents loops by moving a nontrunking port into an errdisable state when a BPDU is received on that port.A. how does the interface respond when it receives a BPDU? A. If a PortFast-configured interface receives a BPDU.(Topic 8) Which command can you enter to view the ports that are assigned to VLAN 20? 343 . SW1(config-line)#absolute-timeout 0 10 D. C. Answer: D Explanation: Understanding How PortFast BPDU Guard Works To prevent loops from occurring in a network. an invalid configuration exists. D.

1. 172.1. ping ipv6 Answer: C Question No : 352 . 172. which command can you enter to verify the status of the interface and determine whether fast switching is enabled? A.(Topic 8) After you configure the Loopback0 interface. Router#show run C. Switch#show vlan id 20 B.A. ping D.16.16.0/24 344 . telnet C.1. Switch#show ip interface brief C.16.1.(Topic 8) Which command can you enter to verify that a 128-bit address is live and responding? A.16.0/26 B.(Topic 8) What is the correct routing match to reach 172.5/32? A. Router#show ip interface brief Answer: A Question No : 353 . Router#show ip interface loopback 0 B. Switch#show interface vlan 20 D.0/25 C. 172. traceroute B. Router#show interface loopback 0 D. Switch#show ip interface vlan 20 Answer: A Question No : 351 .

inside local E. C. Port security has disabled the interface. router#show ip interface s0/2/0 D. inside global D. F. D. The device at the other end of the connection is powered off.(Topic 8) Which command can you enter to determine whether serial interface 0/2/0 has been configured using HDLC encapsulation? A.(Topic 8) Which type of address is the public IP address of a NAT device? A. The interface is fully functioning.D. 345 . router#\show ip interface brief Answer: C Question No : 356 . router#show interfaces Serial 0/2/0 C. router#show platform B. The serial interface is disabled. outside local C. the default route Answer: A Question No : 354 . The interface is configured with the shutdown command. E.(Topic 8) Which condition does the err-disabled status indicate on an Ethernet interface? A. inside public Answer: C Question No : 355 . outside global B. There is a duplex mismatch. B. outside public F.

a port being error-disabled is not by itself a cause for alarm.Answer: A Explanation: Causes of errDisable At first. the Errdisable feature is supported for these connectivity issues: ARP inspection Broadcast suppression BPDU port-guard Channel misconfiguration Crossbar failure Duplex mismatch Layer 2 protocol tunnel misconfiguration Layer 2 protocol tunnel threshold exceeded UDLD The error-disable function allows the switch to shut down a port when it encounters any of these situations. provides common view of entire topology B. calculates shortest path D. as long as one determines and resolves its root cause. this feature was implemented to handle special collision situations where the switch detected excessive or late collisions on a port. collisions are normal for half-duplex. This last cause is common because of failures to negotiate the speed and duplex properly between two directly connected devices (for example. As the capabilities of the CatOS grew. Question No : 357 . Excessive collisions occur when a frame is dropped because of encountering 16 collisions in a row. a bad network interface card (NIC) card (with physical problems. exchanges routing tables with neighbors C. or a port duplex misconfiguration. Late collisions occur after every device on the wire should have recognized that the wire was in use. or driver problems).) A. defective). as long as they do not exceed a small percentage of traffic. Remember. wrong type. utilizes frequent periodic updates 346 . there were more ways that a port could become error-disabled. An error-disabled port is a symptom of a deeper problem that must be resolved. These types of errors could be caused by a cable that is out of specification (too long.(Topic 8) Which three characteristics are representative of a link-state routing protocol? (Choose three. due to the Carrier-Sense MultiAccess (CSMA) nature of Ethernet. utilizes event-triggered updates E. Only halfduplex connections should ever have collisions in a LAN. For example on the catalyst 6500 running catOS. a NIC card connected to a switch).

They rely on external firewalls for WLAN security. operations. satellite Internet C. municipal Wi-Fi D. DSLAM F. Respond to organizational growth with the Cisco scale-as-it-grows licensing model. WiMax B.) A. E.) A.D Question No : 358 . wireless. CMTS Answer: A. They must be configured through a GUI over HTTP or HTTPS.(Topic 8) 347 . C. or security settings at any time through centralized provisioning and management. Configure wireless policy.B. B. management. They are best suited to smaller wireless networks. They can simplify the management and deployment of wireless LANs.(Topic 8) Which two statements about wireless LAN controllers are true? (Choose two.E Explanation: Simplified OperationsCisco wireless controllers reduce operational expenses by simplifying network deployment.C Question No : 359 .C. D.(Topic 8) What are three broadband wireless technologies? (Choose three. Question No : 360 .Answer: A. They can manage mobility policies at a systemwide level. Answer: A. and management. available with all Cisco wireless controllers. site-to-site VPN E. and remote access. One PolicyIncrease security with context-based control and user-specific services with a single source of business policy across wired.

transport output all C. It configures the native VLAN.(Topic 8) If the primary root bridge experiences a power loss. switch 00E0.(Topic 8) Refer to the exhibit. C.3DC6 D. transport preferred all D.F90B. What is the effect of the given configuration? A.90C5 Answer: A Question No : 362 . switch 0004. switch 00E0. It configures an inactive switch virtual interface. switch 0040.F726. It configures an active management interface. It configures the default VLAN.Which command is necessary to permit SSH or Telnet access to a cisco switch that is otherwise configured for these vty line protocols? A. transport type all B.9A1A. transport input all Answer: D Question No : 361 . 348 .0BC0.C182 B. D. which switch takes over? A. B.6BE3 C.

Answer: A Question No : 363 .(Topic 8) Which two statements about the tunnel mode ipv6ip command are true? (Choose two.(Topic 8) Which function of the IP SLAs ICMP jitter operation can you use to determine whether a VoIP issue is caused by excessive end-to-end time? A. Answer: A. It specifies that the tunnel is a Teredo tunnel. jitter C. TFTP D. DHCP Answer: A Question No : 364 . It enables the transmission of IPv6 packets within the configured tunnel. It specifies IPv6 as the transport protocol. C. It specifies IPv4 as the encapsulation protocol. successive packet loss D. VRRP B. packet loss B.B Question No : 365 .) A. B. round-trip time latency Answer: D 349 .(Topic 8) Which standards-based First Hop Redundancy Protocol is a Cisco supported alternative to Hot Standby Router Protocol? A. It specifies IPv6 as the encapsulation protocol. E. D. GLBP C.

Layer 2 bridge B. show ip route Answer: A Question No : 368 .Question No : 366 . no earner B. giants D. Layer 3 switch D.(Topic 8) Which interface counter can you use to diagnose a duplex mismatch problem? A. runts Answer: B Question No : 367 . router Answer: D Explanation: The only way to get off a layer two network segment is through a layer three 350 .(Topic 8) Which type of device can be replaced by the use of subinterfaces for VLAN routing? A. late collisions C. CRC errors E. show ip bgp paths D. show ip bgp summary B. show ip community-list C. Layer 2 switch C. deferred F.(Topic 8) Which command can you enter to verify that a BGP connection to a remote device is established? A.

a switch with priority 12288 Answer: A Question No : 370 . In this lab you’ll use sub-interfaces to match the VLAN’s in the trunk to allow for interfaces in each VLAN and accomplish inter-vlan routing for the hosts as the router has an interface in each layer three network. A Sub-Interface is a logical interface partitioned off from a physical interface. Router(config)#username jdone privilege 1 password 7 08314D5D1A48 B. a switch with priority 4096 D. A sub-interface allows you to have multiple interface configurations on a single physical interface. Question No : 369 . So let’s say for example you have a single switch with 5 different VLAN’s and machines on each VLAN.device. Router(config)#username jdone privilege 1 password 7 PASSWORD1 C. a switch with priority 8192 C. which tertiary switch can take over? A. Router(config)#username jdone privilege 15 password 0 08314D5D1A48 D.(Topic 8) 351 . in which case each VLAN would require its own router to get out of that layer two network to a different layer two network. a switch with priority 20480 B.(Topic 8) If primary and secondary root switches with priority 16384 both experience catastrophic losses. commonly referred to as a Default Gateway for host machines.(Topic 8) Which command can you enter to configure a local username with an encrypted password and EXEC mode user privileges? A. Router(config)#username jdone privilege 15 password 0 PASSWORD1 Answer: A Question No : 371 .

(Topic 8) Which two statements about IPv6 router advertisement messages are true? (Choose two. C. Routers can use update messages to reroute when links fail. D.Which two statements about late collisions are true? (Choose two. Answer: A. They indicate received frames that did not pass the FCS match. Routing is disrupted when links fail. The advertised prefix length must be 48 bits. It requires more resources than other routing methods. B. They are sourced from the configured IPv6 interface address. The advertised prefix length must be 64 bits. E.(Topic 8) Which three statements about static routing are true? (Choose three. They may indicate a duplex mismatch. It uses consistent route determination. B. E.B Question No : 373 . Answer: A. B. D. They are frames that exceed 1518 bytes. They occur when CRC errors and interference occur on the cable. Their destination is always the link-local address of the neighboring node. It is best used for large-scale deployments. E. It is best used for small-scale deployments. By definition. They use ICMPv6 type 134. C. D. F.C Question No : 374 .B. Answer: A.) A.B Question No : 372 .) A. C. they occur after the 512th bit of the frame has been transmitted.) A.(Topic 8) 352 .

Answer: A Question No : 376 . D. The local username password is encrypted in the configuration. It is a Cisco proprietary protocol. such as the Cisco Discovery Protocol (CDP). LLDP performs functions similar to several proprietary protocols.(Topic 8) What is the authoritative source for an address lookup? A. It is configured in global configuration mode. and neighbors on an IEEE 802 local area network. Extreme Discovery Protocol. The enable secret is in clear text in the configuration. Answer: B Explanation: LLDP runs over the Data Link Layer. The local username password is in clear text in the configuration. It runs over the transport layer. C.(Topic 8) Which condition indicates that service password-encryption is enabled? A. principally wired Ethernet The protocol is formally referred to by the IEEE as Station and Media Access Control Connectivity Discovery specified in IEEE 802.1AB[2] and IEEE 802. Foundry Discovery Protocol (FDP). B. capabilities. the operating system cache 353 . and Microsoft's Link Layer Topology Discovery (LLTD). The Link Layer Discovery Protocol (LLDP) is a vendor-neutral link layer protocol in the Internet Protocol Suite used by network devices for advertising their identity. C. B.Which statement about LLDP is true? A. so devices that use different Network so Answer D is wrong LLDP or Link Layer Discovery Protocol is vendor neutral. The LLDP update frequency is a fixed value. The enable secret is encrypted in the configuration. Question No : 375 .3-2012 section 6 clause 79. a recursive DNS search B. D. Nortel Discovery Protocol (also known as SONMP).

the ISP local cache D. Cisco Express Forwarding B. TFTP Answer: A Question No : 378 . SFTP C. RARP D. FC00::/7 is used in private networks. C. FF00:/8 is used for IPv6 multicast.) A. the browser cache Answer: A Question No : 377 .(Topic 8) Which NAT function can map multiple inside addresses to a single outside address? A. FE80::/10 is used for link-local unicast. process switching C. FE80::/8 is used for link-local unicast.C. ARP E. fast switching D. B. 2001::1/127 is used for loopback addresses. 354 .(Topic 8) Which three statements about IPv6 prefixes are true? (Choose three.(Topic 8) Which feature builds a FIB and an adjacency table to expedite packet forwarding? A. PAT B. cut-through Answer: A Question No : 379 . E. D.

no logging console B.F. blocking B. listening C. FEC0::/10 is used for IPv6 broadcast. service timestamps log datetime msec E. Enable password c1sc0 B.(Topic 8) Which command sets and automatically encrypts the privileged enable mode password? A. Enable secret c1sc0 Answer: D Question No : 381 . Secret enable c1sc0 C. Password enable c1sc0 D.21 Answer: D Question No : 382 .0. logging buffered 4 C.(Topic 8) Which logging command can enable administrators to correlate syslog messages with millisecond precision? A.2.(Topic 8) Which two spanning-tree port states does RSTP combine to allow faster convergence? (Choose two. no logging monitor D.B.) A. Answer: A. forwarding 355 .C Question No : 380 . logging host 10. learning D.

auxiliary setup mode Answer: B Question No : 385 . mini-IOS D. privileged EXEC mode C.E. user EXEC mode D. one or more standby routers C.(Topic 8) Which step in the router boot process searches for an IOS image to load into the router? A. one or more backup virtual routers D. discarding Answer: A. exactly one backup virtual router Answer: A.B 356 .(Topic 8) What are two requirements for an HSRP group? (Choose two. bootstrap B.) A. ROMMON mode Answer: A Question No : 384 . exactly one active router B. exactly one standby active router E. global configuration mode B.(Topic 8) The enable secret command is used to secure access to which CLI mode? A.B Question No : 383 . POST C.

clear ip nat statistics Answer: A Question No : 387 .(Topic 8) Which command can you enter to display the hits counter for NAT traffic? A. ESRP Answer: A Question No : 388 . the Authentication phase E.(Topic 8) Which protocol advertises a virtual IP address to facilitate transparent failover of a Cisco routing device? A. the PPP Session phase B. the PPPoE client locates a PPPoE server. Phase 1 Answer: A Explanation: PPPoE is composed of two main phases: Active Discovery Phase: In this phase. the Active Discovery phase D. FHRP B. DHCP C.Question No : 386 . Phase 2 C. show ip nat statistics B. RSMLT D. called 357 . debug ip nat C.(Topic 8) During which phase of PPPoE is PPP authentication performed? A. show ip debug nat D.

(Topic 8) What is the effect of using the service password-encryption command? A. It will encrypt all current and future passwords.com/c/en/us/td/docs/security/asa/asa92/configuration/vpn/asavpn-cli/vpn-pppoe. D. E. a Session ID is assigned and the PPPoE layer is established. If the service password-encryption is used. During this phase. C. 358 . PPP options are negotiated and authentication is performed. PPP Session Phase: In this phase. It will encrypt the secret password and remove the enable secret password from the configuration. Only the enable secret password will be encrypted. Use the show run command to show most passwords in clear text. D. allowing data to be transferred over the PPP link within PPPoE headers. It supports significantly higher transmission speeds than UDP. It uses a single SYN-ACK message to establish a connection. console. Reference: http://www.(Topic 8) What are three characteristics of the TCP protocol? (Choose three.html Question No : 389 . Only the enable password will be encrypted. As a result.an access concentrator. B. AUX passwords are configured on the Cisco device. The connection is established before data is transmitted.) A. the security of device access is improved. Question No : 390 . B. Once the link setup is completed. Only passwords configured after the command has been entered will be encrypted.cisco. It ensures that all data is transmitted and received by the remote device. Answer: B Explanation: Enable vty. all the passwords are encrypted. PPPoE functions as a Layer 2 encapsulation method. C.

B. thereby compromising the entire network. When computer systems are networked with other departments or agencies for the purpose of sharing information. Answer: B Explanation: Computer systems and networks are vulnerable to physical attack. F.C. D. It requires applications to determine when data packets must be retransmitted. C.(Topic 8) Which protocol is the Cisco proprietary implementation of FHRP? A. Physically secure network equipment from potential access by unauthorized individuals. HSRP B. therefore. Question No : 392 . VRRP 359 . Delay deployment of software patches and updates until their effect on end-user equipment is well known and widely reported E. Minimize network overhead by deactivating automatic antivirus client updates. it is critical that each party to the network take appropriate measures to ensure that its system will not be physically breached. Answer: B. or corrupt computer equipment. Encourage users to use personal information in their passwords to minimize the likelihood of passwords being forgotten. It uses separate SYN and ACK messages to establish a connection. and information. Physical security procedures may be the least expensive to implement but can also be the most costly if not implemented. software.E Question No : 391 . The most expensive and sophisticated computer protection software can be overcome once an intruder obtains physical access to the network. steal.(Topic 8) What should be part of a comprehensive network security plan? A. procedures should be implemented to ensure that systems and networks are physically secure. Physical access to a system or network provides the opportunity for an intruder to damage.E. Allow users to develop their own approach to network security.

4 D. how many broadcast domains are present on the router? A. intra-VLAN routing using router on a stick D. enable secret password C.C. inter-VLAN routing using a Layer 3 switch B.(Topic 8) Which two passwords must be supplied in order to connect by Telnet to a properly secured Cisco switch and make changes to the device configuration? (Choose two. tty password B.) A. 8 Answer: C Question No : 395 . 1 B.(Topic 8) If a router has four interfaces and each interface is connected to four switches. vty password D. 2 C. CARP Answer: A Question No : 393 . inter-VLAN routing using a Layer 2 switch C.(Topic 8) Which technology can enable multiple VLANs to communicate with one another? A. intra-VLAN routing using a Layer 3 switch Answer: A Question No : 394 . GLBP D. aux password 360 .

It supports EAP authentication for connecting to wireless networks. A client. so Telnet uses vty for connecting a remote Cisco switch. switch-mdf-c1>hostname switch-mdf1 C. A server.(Topic 8) Which statement about RADIUS security is true? A. For access security. switch-mdf-c1(config)#hostname switch-mdf1 B. RADIUS comprises three components: A protocol with a frame format that utilizes User Datagram Protocol (UDP)/IP. The server runs on a central computer typically at the customer's site. username password Answer: B. switch-mdf-c1#hostname switch-mdf1 D. D. the vty password and enable password must be configured. C. switch-mdf-c1(config-if)#hostname switch-mdf1 Answer: A Question No : 397 . while the clients reside in the dial-up access servers and can be distributed throughout the network. It provides encrypted multiprotocol support. console password F.E. Answer: A Explanation: RADIUS Background RADIUS is an access server that uses AAA protocol. Device-administration packets are encrypted in their entirety. Cisco 361 . B.(Topic 8) Which command can you use to set the hostname on a switch? A. It ensures that user activity is fully anonymous. It is a system of distributed security that secures remote access to networks and network services against unauthorized access. Question No : 396 .C Explanation: Telnet presents a potential security risk.

RADIUS servers are responsible for receiving user connection requests. any user passwords are sent encrypted between the client and RADIUS server. The client is responsible for passing user information to designated RADIUS servers.) A. RADIUS does not support these protocols: AppleTalk Remote Access (ARA) protocol NetBIOS Frame Protocol Control protocol Novell Asynchronous Services Interface (NASI) X. Flexible Authentication Mechanisms The RADIUS server supports a variety of methods to authenticate a user.25 PAD connection TACACS+ offers multiprotocol support. Question No : 398 . and other authentication mechanisms. and then acting on the response that is returned.(Topic 8) Which two types of NAT addresses are used in a Cisco NAT device? (Choose two. In addition. which is never sent over the network. This eliminates the possibility that someone snooping on an unsecured network could determine a user's password. or Challenge Handshake Authentication Protocol (CHAP).(Topic 8) Which spanning-tree protocol rides on top of another spanning-tree protocol? 362 . it can support PPP. authenticating the user. external global F. Client/Server Model A network access server (NAS) operates as a client of RADIUS.B Question No : 399 . external local Answer: A. inside private D. Network Security Transactions between the client and RADIUS server are authenticated through the use of a shared secret. inside local B.has incorporated the RADIUS Client into Cisco IOS Software Release 11. The RADIUS servers can act as proxy clients to other kinds of authentication servers. UNIX login. When it is provided with the user name and original password given by the user. and returning all configuration information necessary for the client to deliver service to the user. Password Authentication Protocol (PAP). inside global C.1 and later and other device software. outside private E.

show interface switchport Answer: A Question No : 401 . router(config)#ip route 192.0.0. router(config)#ip route 0. MSTP B.0.0 GigabitEthernet0/1 D. RSTP C.255. PVST+ D.0 0.255.0.0/20 to a specific interface? A.A.0.0.168.(Topic 8) Which command can you enter to determine whether a switch is operating in trunking mode? A.0 255. router(config)#ip route 192.168.0.255. Mono Spanning Tree Answer: A Question No : 400 . show vlan C.0 GigabitEthernet0/1 Answer: A 363 .0 GigabitEthernet0/1 C.0 255.0.240.0.168.255. router(config)#ip route 0.(Topic 8) Which command can you enter to route all traffic that is destined for 192. show interfaces D.255.0 255. show ip interface brief B.0 GigabitEthernet0/1 B.