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

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

Match the terms on the left with the appropriate OSI layer on the right. data link 10 . (Not all options are used. presentation C.) Answer: Question No : 10 . application B. 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. internet F. session D. What is the highest layer of the protocol stack that the network administrator is using for this operation? A.

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

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

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

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

A router is commonly considered a DTE device. A modem terminates an analog local loop. 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.D. E. A modem terminates a digital local loop. F. D. The network’s DCE device (includes CSU/DSU) provides clocking to the DTEconnected interface (the router’s serial interface). A router is commonly considered a DCE device. Answer: A. A CSU/DSU is used between two digital lines For more explanation of answer D.Question No : 16 . 15 . C. B.(Topic 1) Which of the following describes the roles of devices in a WAN? (Choose three. A CSU/DSU terminates a digital local loop.) A. 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. A CSU/DSU terminates an analog local loop. Therefore a modem terminates an analog local loop is correct.E Explanation: The idea behind a WAN is to be able to connect two DTE networks together through a DCE network.

Answer: 16 . PC_1 is sending packets to the FTP server.(Topic 1) Refer to the exhibit. Drag the correct frame and packet address to their place in the table.Question No : 17 DRAG DROP . 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 .Question No : 18 . After HostA pings HostB.(Topic 1) Refer to the exhibit.

Host A sends a broadcast frame asking the MAC address of 192.6. Exhibit D E. Exhibit A B.168. Exhibit E F. Exhibit B C.A.1.6. Exhibit C D.(Topic 1) 18 . This information (IP and MAC address of the default gateway) is saved in its ARP cache for later use. Question No : 19 . Exhibit F Answer: A Explanation: Host A knows host B is in another network so it will send the pings to its default gateway 192.1.168.

255. 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.E Explanation: If Subnet Mask is 255. must be a Layer 3 device for the PCs to communicate with each other.x.255.255.255. If Subnet Mask is 255.128 the hosts vary from x.255. D. B. If Subnet Mask is 255.0. must be a Layer 2 device for the PCs to communicate with each other.Refer to the exhibit.128. With a network wide mask of 255.255.x. Answer: B. E.127 & x.255.0 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. With a network wide mask of 255.128.) A.x. each interface does require an IP address on a unique IP subnet. Which three statements correctly describe Network Device A? (Choose three. C.254. With a network wide mask of 255.x.x.x. each interface does not require an IP address.255. 19 .255.255.0 the 2 specified hosts fall in different subnets so they need a Layer 3 device to communicate.0 .254. each interface does not require an IP address.128x.x.255.255.255.0.255.0.D.x. With a network wide mask of 255. With a network wide mask of 255.x.255.

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

) A.1. Router1 will strip off the source MAC address and replace it with the MAC address 0000. Router1 will strip off the destination MAC address and replace it with the MAC address 0000.168. After the message is sent. While this transmission is occurring.0c07. it will wait for a specified amount of time before attempting to transmit. When there is no traffic detected. B. the signals collide and cannot reach the destination. a device will transmit its message. Router1 will strip off the destination IP address and replace it with the IP address of 21 . If more than one device transmits simultaneously.Answer: C. C. D. Router1 will strip off the source IP address and replace it with the IP address 192.6965. the device returns to its default listening mode.4320. the device continues to listen for traffic or collisions on the LAN.D Explanation: Ethernet network is a shared environment so all devices have the right to access to the medium.0c36.(Topic 1) Refer to the exhibit: What will Router1 do when it receives the data frame shown? (Choose three.40. Question No : 22 . If a device detects another device is sending.

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

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

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

D. E. Broadcast Domain: Broadcasting sends a message to everyone on the local network (subnet). but the client does not know how to reach the DHCP Server. broadcasts can traverse collision domains freely. These days.D Explanation: Basically. a broadcast domain can contain multiple collision domains. A collision domain is sometimes referred to as an Ethernet segment. Broadcast domains are exactly what they imply: they are network segments that allow broadcasts to be sent across them. An example for Broadcasting would be DHCP Request from a Client PC. since we mostly use switches to connect computers to the network. The number of collision domains would decrease. 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. Answer: C. The simple way to look at it is this way: switches break up collision domains. The number of collision domains would remain the same. The number of broadcast domains would remain the same. C. Routers. Only one device in the collision domain may transmit at any one time. while routers (and VLANs) break up collision domains and broadcast domains. The number of broadcast domains would increase. Also. In the old days of hubs. you break up collision domains by switching packets bound for other collision domains. F.What two results would occur if the hub were to be replaced with a switch that is configured with one Ethernet VLAN? (Choose two. Since switches and bridges allow for broadcast traffic to go unswitched. but a collision domain can never have more than one broadcast domain associated with it. you generally have one collision domain to a PC. and the other devices in the domain listen to the network in order to avoid data collisions. so when a broadcast hits a router (or the perimeter of a VLAN). So the client sends a DHCP Discover packet to EVERY PC in the local subnet 25 . 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).) A. The number of broadcast domains would decrease. The Client is asking for a IP Address. a collision domain is a network segment that allows normal network traffic to flow back and forth. it doesn't get forwarded. With switches. this meant you had a lot of collisions. B. The number of collision domains would increase. don't allow broadcasts through by default. however.

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

9999 IP 172.16.7 Question No : 27 DRAG DROP . (Not all options are used.(Topic 1) Drag the cable type on the left to the purpose for which it is best suited on the right.0c89.34.3333MAC 0000.) Answer: 27 .0c89.16.21.250IP 172.Answer: Explanation: Source Mac AddressDestination Mac AddressSource IP addressDestination MAC address MAC 0000.

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

255.0 SwitchB(config)# interface FastEthernet 0/1 SwitchB(config-if)# ip address 192.252 255.255.255.8.8. SwitchB(config)# ip route 192.255. Which set of commands is required to accomplish this task? A.255.8.255.168.8.254 255. SwitchB(config)# interface vlan 1 SwitchB(config-if)# ip address 192.255.252 255.8.255.168.254 SwitchB(config)# interface vlan 1 SwitchB(config-if)# ip address 192.255.8.A technician has installed SwitchB and needs to configure it for remote access from the management workstation connected to SwitchA.0 SwitchB(config-if)# no shutdown B.168.0 SwitchB(config-if)# no shutdown C.168.8.252 255. SwitchB(config)# interface FastEthernet 0/1 SwitchB(config-if)# ip address 192.255.255.168.0 SwitchB(config-if)# no shutdown Answer: C Explanation: To remote access to SwitchB.252 255.0 SwitchB(config-if)# no shutdown E.0 SwitchB(config-if)# no shutdown D. SwitchB(config)# ip default-network 192. it must have a management IP address on a VLAN on that 29 .255.168.255.168.0 SwitchB(config-if)# ip default-gateway 192.168.8. SwitchB(config)# ip default-gateway 192.8.255.252 255.168.254 255.254 SwitchB(config)# interface vlan 1 SwitchB(config-if)# ip address 192.

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

What will Switch-1 do with this data? A. 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.Switch-1 needs to send data to a host with a MAC address of 00b0. switch sends broadcast to all ports except the source to find out the destination host. D. or moved to another port on the same switch or a different switch. Switch-1 will drop the data because it does not have an entry for that MAC address. This could cause confusion in frame forwarding. 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.efa4. Check the MAC address table of Switch1 and find that the MAC address of the host does not exist in the table. Switch-1 will forward the data to its default gateway. B. Switch-1 will flood the data out all of its ports except the port from which the data originated. Switch-1 will send an ARP request out all its ports except the port from which the data originated. 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. Answer: B Explanation: This question tests the operating principles of the Layer 2 switch. 31 . turned off. Machines may have been removed from a port. C.d056.

When a packet is received from an 802. spanning-tree mode rapid-pvst C. C.1Q trunk.In output there is no MAC address of give host so switch floods to all ports except the source port. spanning-tree uplinkfast B. so incoming frames with unknown destinations are only transmitted to ports that reside in the same VLAN as the incoming frame. spanning-tree mode mst Answer: B Explanation: 32 . Unknown unicast frames are retransmitted only to the ports that belong to the same VLAN. Answer: B Explanation: Each VLAN resides in its own broadcast domain. B. D. the VLAN ID can be determined from the source MAC address and the MAC address table. Ports between switches should be configured in access mode so that VLANs can span across the ports.(Topic 2) Which statement about VLAN operation on Cisco Catalyst switches is true? A. spanning-tree backbonefast D. Question No : 32 . Broadcast and multicast frames are retransmitted to ports that are configured on different VLAN. Question No : 31 .(Topic 2) Which command enables RSTP on a switch? A.

SwitchA. Each of these four switches has been configured with a hostname. root 33 .1D protocol. as well as being configured to run RSTP. Which three of these show the correct RSTP port roles for the indicated switches and interfaces? (Choose three. that includes the benefits of its Per-VLAN spanning tree protocols. designated B.(Topic 2) Refer to the exhibit. called Rapid-PVST+. The RSTP 802. Fa0/1.Rapid Spanning Tree Protocol (RSTP) is an enhancement of the original STP 802.1w protocol is an IEEE open implementation. No other configuration changes have been made.) A. Cisco has its own proprietary implementation of RSTP. SwitchA. To activate the Rapid-PVST+ protocol: switch(config)#spanning-tree mode rapid-pvst Question No : 33 . Fa0/2.

Fa0/2. 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. 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. Gi0/1. SwitchC. root F. 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 . The receiving switch will add its local port cost value to the cost in the BPDU. In general. 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. Gi0/2. SwitchD. root D. SwitchB. SwitchB. Because SwitchC is the root bridge so the 2 ports nearest SwitchC on SwitchA (Fa0/1) and SwitchD (Gi0/2) will be root ports. the lower the value of its cost.C. root Answer: A. “cost” is calculated based on bandwidth of the link.B. designated E.F Explanation: The question says “no other configuration changes have been made” so we can understand these switches have the same bridge priority. 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. Gi0/2. The higher the bandwidth on a link.

Switch D adds 4 (the cost value of 1Gbps link) and advertises this value (4) to SwitchB.SwitchC advertises its cost to the root bridge with a value of 0. 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. Below summaries all the port roles of these switches: 35 . 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. Now our last task is to identify the port roles of the ports between SwitchA & SwitchB.

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

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

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

if switches A (MAC=0200. If two bridges have equal priority then the MAC addresses are compared..1111) and B (MAC=0200. To compare two bridge IDs. The Bridge priority default is 32768 and can only be configured in multiples of 4096(Spanning tree uses the 12 bits extended system ID). the bridge ID contains both numbers combined together .0200.0000.0000. Each bridge has a configurable priority number and a MAC Address. 32769: 11-22-33-44-55-65 D. 39 .(Topic 2) Which switch would STP choose to become the root bridge in the selection process? A. Question No : 38 . Question No : 37 .Printers are connected by hubs..will become the target of being the root.0000. for example.1111). 32768: 11-22-33-44-55-66 would be the bridge because it has a lower priority and MAC address. Switch3 with a smaller MAC address will provide a designated port for printers. Decide the switch that provides the spanning-tree designated port role between Switch3 and Switch4.Bridge priority + MAC (32768. In this case. 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.2222) both have a priority of 32768 then switch A will be selected as the root bridge. as if looking at a real number anything less than 32768. 32768: 11-22-33-44-55-66 B. Compare their MAC addresses. 32768: 22-33-44-55-66-77 C. the priority is compared first. They have the same priority 32768.(Topic 2) Refer to the exhibit.

Why has this switch not been elected the root bridge for VLAN1? A. which is higher than the roots priority of 20481. VLAN 10 is chosen as native. It has a higher bridge ID than the elected root bridge. B.1Q giants frames could saturate the link. An 802. C.1Q trunk is configured between the two switches. On CAT1. D. 802. Question No : 39 . 40 . B.(Topic 2) Cisco Catalyst switches CAT1 and CAT2 have a connection between them using ports FA0/13. but on CAT2 the native VLAN is not specified. VLAN 10 on CAT1 and VLAN 1 on CAT2 will send untagged frames. and this switch has a bridge ID priority of 32768. It has more than one interface that is connected to the root network segment. What will happen in this scenario? A. It has a higher MAC address than the elected root bridge. It is running RSTP while the elected root bridge is running 802.1d spanning tree. Answer: D Explanation: The root bridge is determined by the lowest bridge ID.

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

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

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

The link between the switches is configured in the wrong VLAN. 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. C. the connections between the switches must be configured as trunk ports. what is the most likely problem? A. VTP is not configured to carry VLAN information between the switches. The access link needs to be configured in multiple VLANs. D. Switch IP addresses must be configured in order for traffic to be forwarded between the switches. All switch ports are assigned to the correct VLANs. Based on the output shown. E. B. 44 .Refer to the exhibit. The link between the switches needs to be configured as a trunk.

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

highest port priority number E. Question No : 46 . path cost B. In particular.(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.that they can pass traffic from multiple VLANs. the port with lowest cost to the root bridge will become root port (on non-root switch). 46 . 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. lowest port MAC address C. Question No : 47 .(Topic 2) Refer to the exhibit. VTP revision number D.

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

1Q protocol. or Virtual Bridged Local Area Networks protocol.Question No : 48 . ISL E.1q or the Cisco proprietary ISL.) A.1Q is a standardized relay method that inserts 4 bytes field into the original Ethernet frame and re-calculate the FCS. and thus requires that the FCS be recomputed. Non-marked frame carries no VLAN identification information.1Q frame relay supports two types of frame: marked and non-marked.(Topic 2) Which two link protocols are used to carry multiple VLANs over a single link? (Choose two. It is a Layer 2 messaging protocol which maintains VLAN configurations across networks. 802.D Explanation: Cisco switches can use two different encapsulation types for trunks.1q since it is standards based and will interoperate with other vendors. the industry standard 802. C. Answer: B. 802.3 frame header. 802.1Q protocol? (Choose two. It is used exclusively for tagging VLAN frames and does not address network reconvergence following switched network topology changes.E Explanation: 802. 48 .) A. It includes an 8-bit field which specifies the priority of a frame. It modifies the 802.3u Answer: B. mainly stipulates the realization of the VLAN. IGP D.1q C. Question No : 49 . D. It is a trunking protocol capable of carrying untagged frames. Generally. most network engineers prefer to use 802. VTP B. E.(Topic 2) Which two of these are characteristics of the 802. B. 802.

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

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

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

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

Based on the output shown.(Topic 2) Refer to the exhibit. 53 . even though the proper cabling has been attached? A. 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. VLANs have not been created yet.Question No : 54 .

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

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

a VLAN. Question No : 58 . the frame is broadcast on all interfaces except the one it was received on.(Topic 2) Refer to the exhibit. switched virtual networks avoid wasting bandwidth. possible on the same physical segment. destination MAC address Answer: F Explanation: When a frame is received. 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. If the address is unknown. the switch looks at the destination hardware address and finds the interface if it is in its MAC address table. By containing traffic originating on a particular LAN only to other LANs in the same VLAN. 56 . and no users outside that VLAN can communicate with them. source IP address C. source switch port D. destination IP address E. Question No : 59 . 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. source MAC address B. destination port address F.(Topic 2) What does a Layer 2 switch use to decide where to forward a received frame? A.

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

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

E Explanation: Example output from these two commands: 59 . transport Answer: B Explanation: RSTP and STP operate on switches and are based on the exchange of Bridge Protocol Data Units (BPDUs) between switches. Question No : 62 . 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 ->. network D. show interface trunk B. show ip interface brief D.(Topic 2) At which layer of the OSI model is RSTP used to prevent loops? A. physical B. show interface vlan E.) A. data link C.devices. 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. Question No : 61 . show interface switchport Answer: A.

1q trunking 1 Fa0/21 auto n-802.SW3#show interface trunk Port Mode Encapsulation Status Native vlan Fa0/19 auto n-802.1q 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 .(Topic 2) Refer to the exhibit.1q trunking 1 Fa0/20 auto n-802.1q 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 . What set of commands was configured on interface Fa0/3 to produce the given output? A.

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

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

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

arp address Answer: A Explanation: ICMP pings are used to verify connectivity between two IP hosts. tracert address C. Question No : 67 . not revolution. Question No : 68 . forwarding status. 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.1D standard evolution. RSTP not only defines the role of other ports: alternative port and backup port. RSTP is 802. RSTP defines no new port states. RSTP is compatible with the original IEEE 802.C.(Topic 2) 64 . Answer: B. rapid spanning tree protocol (IEEE802. referred to as RSTP) will speed up significantly the speed to re-calculate spanning tree. learning status.1D STP. but also defines status of 3 ports: discarding status.1W.1D STP. and makes no changes. It retains most of the parameters. D. traceroute address D.E Explanation: When network topology changes. ping address B.(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. E. RSTP is a proprietary implementation of IEEE 802.

RSTP significantly reduces topology reconverging time after a link failure. learning.1w introduced an evolution of the Spanning Tree Protocol: Rapid Spanning Tree Protocol (RSTP).1w C.B. B. RSTP also uses the STP proposal-agreement sequence. Answer: A. E. RSTP expands the STP port roles by adding the alternate and backup roles. 802. While STP can take 30 to 50 seconds to transit from a blocking state to a forwarding state. RSTP provides a faster transition to the forwarding state on point-to-point links than STP does. F. Question No : 69 . D. RSTP port states are blocking.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. These ports are allowed to immediately enter the forwarding state rather than passively wait for 65 .3ad B.1D D. C.Which IEEE standard protocol is initiated as a result of successful DTP completion in a switch over Fast Ethernet? A. 802. RSTP uses the same timer-based process as STP on point-to-point links.(Topic 2) Which three statements about RSTP are true? (Choose three. 802. To overcome this problem. which significantly reduces the convergence time after a topology change occurs in the network.) A. or forwarding.D Explanation: One big disadvantage of STP is the low convergence which is very important in switched network. 802. RSTP works by adding an alternative port and a backup port compared to STP. in 2001. discarding. RSTP is typically able to respond less than 10 seconds of a physical link failure. the IEEE with document 802.1Q) to be used.

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

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

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

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

1d) is used to prevent Layer 2 loops. SAP Answer: A. 802.) A. STP (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. 802.1q is a Frame Relay protocol which belongs to VLAN.D Explanation: This question is to examine the STP protocol.com/en/US/tech/tk389/tk621/technologies_white_paper09186a0080094cf a. SAP is a concept of the OSI model.(Topic 2) 70 .No Learning Learning Yes Yes Forwarding Forwarding Yes Yes Reference: http://www. STP E.cisco.shtml#states Question No : 75 .1d B. Question No : 76 .1q D. 802.

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

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

D. Answer: C Explanation: Since the port is in the blocked status.Given the output shown from this Cisco Catalyst 2950. This switch is running RSTP while the elected designated switch is running 802. 73 .1d Spanning Tree. This switch has more than one interface connected to the root network segment in VLAN 2. B. what is the reason that interface FastEthernet 0/10 is not the root port for VLAN 2? A. we must assume that there is a shorter path to the root bridge elsewhere. C. This switch has a lower bridge ID for VLAN 2 than the elected designated switch.(Topic 2) Refer to the topology shown in the exhibit. Question No : 80 . This switch interface has a higher path cost to the root bridge than another in the topology.

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

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

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

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

not the underlying physical member interfaces. the port-channel 1 interface B.html Question No : 84 . Optionally. Reference: http://www.(Topic 2) 78 . the highest number member interface C. the lowest number member interface Answer: A Explanation: To create an EtherChannel interface and assign its IP address and subnet mask. all member interfaces D.cisco. Step 2 Router(config-if)# ip address ip-address subnet-mask Assigns an IP address and subnet mask to the EtherChannel interface. 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.com/c/en/us/td/docs/switches/lan/catalyst2948gand4908g/120_7_w5_15d/configuration/guide/config/ether_ch. Step 3 Router(config-if)# exit Router(config)# Exits this mode.A. 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. 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.

2a00 ->.Refer to the exhibit. All of the interface roles of the root bridge are designated. Which statement is true? A.1580. VLAN 20 is running the Per VLAN Spanning Tree Protocol. The Fa0/11 role confirms that SwitchA is the root bridge for VLAN 20. because not all of the interface roles are designated. not of the root bridge.596d. C. not PVST ->. SwitchA is not the root bridge. B. SwitchA has one Root port and 1 Alternative port so it is not the root bridge. The MAC address of the root bridge is 0017. The MAC address of the root bridge is 0017.1580 is the MAC address of this switch.596d. Question No : 85 . Answer: D Explanation: Only non-root bridge can have root port. 0017.596d.(Topic 2) 79 . D. From the output we learn this switch is running Rapid STP. Fa0/11 is the root port so we can confirm this switch is not the root bridge ->.

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

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

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

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

Question No : 91 . Given the partial configurations. incompatible encapsulation E. identify the fault on the Brevard router that is causing the lack of connectivity. insufficient bandwidth C.168.) A. incompatible IP address B.(Topic 3) Why do large OSPF networks use a hierarchical design? (Choose three. to decrease latency by increasing bandwidth 84 .Two routers named Atlanta and Brevard are connected via their serial interfaces as illustrated.1 And Interface Serial 1 of Router Brevard has 192. incorrect subnet mask D. These are from different network. link reliability too low F. The Atlanta router is known to have the correct configuration.10.11. A.2. IPCP closed Answer: D Explanation: Because Interface Serial 0 of Atlanta Router has 192.168. but they are unable to communicate.

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.C. Router# show ip eigrp adjacency B.B. Router# show ip eigrp topology C. Router# show ip eigrp interfaces D. to speed up convergence D. The retransmit interval and the queue counts for the adjacent routers also need to be checked. to reduce routing overhead C. to confine network instability to single areas of the network E. The retransmit interval (Smooth Round Trip Timer – SRTT) and the queue counts (Q count.D Explanation: OSPF implements a two-tier hierarchical routing model that uses a core or backbone tier known as area zero (0). to reduce the complexity of router configuration F. which shows the number of queued EIGRP packets) for the adjacent routers are listed: 85 . Router# show ip eigrp neighbors Answer: D Explanation: Below is an example of the show ip eigrp neighbors command. reduced routing overhead.(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. Attached to that backbone via area border routers (ABRs) are a number of secondary tier areas. Question No : 92 . to lower costs by replacing routers with distribution layer switches Answer: B. What command will display the required information? A.

5. where will the router send a packet destined for 10.5.1.3.1.3 D.5.4.2 B.5.64/29 & 10. 10. 86 .2 C.1.1. Therefore the next-hop should be 10.5.64/28.3.4 Answer: C Explanation: The destination IP address 10. 10.64/27 subnets but the “longest prefix match” algorithm will choose the most specific subnet mask -> the prefix “/29 will be chosen to route the packet.2.1.1. According to the routing table.Question No : 93 .(Topic 3) Refer to the exhibit.1. 10. 10.3 ->.1.1.65? A.1.1. 10.65 belongs to 10.

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

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

What configuration on the Manchester router will establish a route toward the Internet for traffic that originates from workstations on the Manchester LAN? A.0. A static route will be established on the Manchester router to direct traffic toward the Internet over the most direct path available.100.107.107.cisco.1 C.0.(Topic 3) Refer to the exhibit.0.1.0.shtml Question No : 97 .1 89 . ip route 0.0 255.0.255.255.0.0 0. Communication between the client and server is encrypted in both SSH version 1 and SSH version 2.252 128. Reference: www. ip route 0.1. add the “transport input ssh” command under the lines to limit the router to SSH connections only.0 128.255.com/warp/public/707/ssh.0. ip route 0.0.0 172. The speed of all serial links is E1 and the speed of all Ethernet links is 100 Mb/s.16.2 B. If you want to prevent non-SSH connections. Straight (non-SSH) Telnets are refused.255.Answer: D Explanation: Secure Shell (SSH) is a protocol which provides a secure remote access connection to network devices.0 255.

link delay E. Question No : 98 .100.0 0. According to exhibit.0. If you want to have the dynamic routing protocol used and have the static route be used only as a backup.0 255. administrative distance C. you need to increase the AD of the static route so that it is higher than the dynamic routing protocol.0. 90 .0.16.2 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. all traffic towards Internet that originates from workstations should forward to Router R1.(Topic 3) Which parameter would you tune to affect the selection of a static route as a backup. You should generally only use default routing on stub networks—those with only one exit path out of the network. link cost Answer: B Explanation: By default the administrative distance of a static route is 1.0.0.0.16. when a dynamic protocol is also being used? A.255.0.100.100.0 172.0. ip route 0.0 0. ip route 0. hop count B.D. Syntax for default route is: ip route <Remote_Network> <Netmask> <Next_Hop_Address>. link bandwidth D.255.2 F. meaning it will be preferred over all dynamic routing protocols.0 172. ip route 0.16.0.0.1 E.255 172.

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

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

2.0.C.255.A. Question No : 103 DRAG DROP .168.0 0.168.1.1.0 192.0.2 Local(config)# ip route 10. 93 .0 192.255.0.0 255.1 Local(config)# ip route 10.255.(Topic 3) Routing has been configured on the local router with these commands: Local(config)# ip route 0.3.1. calculates shortest path D.0. exchanges routing tables with neighbors C.0. utilizes frequent periodic updates Answer: A. utilizes event-triggered updates E.168. Unlike Distance vector routing protocol (which utilizes frequent periodic updates).3 Drag each destination IP address on the left to its correct next hop address on the right. provides common view of entire topology B.0.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.0. link-state routing protocol utilizes event-triggered updates (only sends update when a change occurs) ->. 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 >.0 192.0 255.

Answer: Explanation: 94 .

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.(Topic 3) Refer to the exhibit. Question No : 104 . the route with the most bits in the mask set to “1 will be chosen to route packet. This is called the “longest match” rule.

10.5) -> traffic to this network will be load-balancing. Question No : 105 .168.168. The router will forward packets from R3 to R1.10.168. B.Based on the exhibited routing table. C.10.192/26 LAN be forwarded to 192. The router will forward packets from R3 to R2 to R1.10. how will packets from a host within the 192. Answer: C Explanation: From the routing table we learn that network 192.0/30 is learned via 2 equal-cost paths (192. D.168. The router will forward packets from R3 to R1 to R2.168. The router will forward packets from R3 to R2 to R1 AND from R3 to R1.(Topic 3) 96 .9 &192.10.1? A.

1.1 D.1 C. Given the output for this command.1. 172. LSAs from other routers D.(Topic 3) What information does a router running a link-state protocol use to build and maintain its topological database? (Choose two. hello packets B.168.154. routing tables received from other link-state routers F. TTL packets from designated routers Answer: A.5.5.Refer to the exhibit.3 Answer: C Explanation: The highest IP address of all loopback interfaces will be chosen -> Loopback 0 will be chosen as the router ID.C Explanation: 97 . Question No : 106 .154. 10.) A. 192. if the router ID has not been manually set. beacons received on point-to-point links E.2 B. SAP messages sent by other routers C. 10. what router ID will OSPF use for this router? A.16.

Neighbor discovery is the first step in getting a link state environment up and running.ciscopress.0. but if an IP address is enabled on any interface.255.255 area 0 B. After the adjacencies are established. when configured.asp?p=26919&seqNum=3 Question No : 108 .com/articles/article.(Topic 3) 98 .0.255 area 0 Reference: http://www. place it in area 0. a Hello protocol is used for this step. network 0.255. the routers may begin sending out LSAs.255.255.0.0. 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 0.0. In keeping with the friendly neighbor terminology. will include all interfaces into area 0? A. network 255. The protocol will define a Hello packet format and a procedure for exchanging the packets and processing the information the packets contain.255 0.255.0 255. Question No : 107 .0.0.255. the advertisements are sent to every neighbor. In turn.(Topic 3) What OSPF command.0 255.255.0 0.255.255) what the IP address is. each received LSA is copied and forwarded to every neighbor except the one that sent the LSA.255. As the term flooding implies. The network command network 0.0 area 0 D.0 255. network 0.0.0.0.0. Example 3-1 Configuring OSPF in a Single Area router ospf 1 network 0.0.255 area 0 dictates that you do not care (255.0 area 0 C.255.

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

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

19.Power on Router .0.0 0.0 D. Answer: D 101 .Router does POST .19.0. The hosts in the VLANs have been configured with the appropriate default gateway. These commands need to be added to the configuration: C-router(config)# router eigrp 123 C-router(config-router)# network 172. C-router is to be used as a "router-on-a-stick" to route between the VLANs.load IOS from Flash.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") . What is true about this configuration? A.check the startup-config file in NVRAM for boot-system commands .(Topic 3) Refer to the exhibit. Question No : 111 .0.19. These commands need to be added to the configuration: C-router(config)# router rip C-router(config-router)# network 172.Bootstrap starts IOS load . These commands need to be added to the configuration: C-router(config)# router ospf 1 C-router(config-router)# network 172.255 area 0 C.3. All the interfaces have been properly configured and IP routing is operational.0. No further routing configuration is required.0 B.

1 C.(Topic 3) Refer to the exhibit.2.16.1. 2. If the router Cisco returns the given output and has not had its router ID set manually. the router will compare the IP addresses of each of 102 . The C-router will have knowledge of all three networks since they will appear as directly connected in the routing table. Since the C-router already knows how to get to all three networks. all traffic destined to a different VLA will be sent to the C-router.1.1 D. 1.168.2 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. If more than one loopback interfaces are configured. no routing protocols need to be configured. 172.1.2.1 B.Explanation: Since all the same router (C-router) is the default gateway for all three VLANs. Question No : 112 . what value will OSPF use as its router ID? A. 192.

0.11110.0.0. B.0.(Topic 3) Which two statements about the OSPF Router ID are true? (Choose two.11310.) A.0. D.11212460x80000234 0x009CAC1 10.0.the interfaces and choose the highest IP address from the loopbacks. Question No : 114 . the lowest IP address on the router becomes the OSPF Router ID.0.0. It should be the same on all routers in an OSPF routing instance.11210.1201520x800002400x0046CB1 We can see OSPF Router ID will be used as source of Type 1 LSA. Question No : 113 . By default. C.0. Answer: A. The router automatically chooses the IP address of a loopback as the OSPF Router ID.0.1116000x8000023A 0x0092B31 10.1131480x8000022C0x0043993 10.(Topic 3) If IP routing is enabled.D Explanation: r120#show ip ospf data OSPF Router with ID (10.0.120) (Process ID 1) Next. It identifies the source of a Type 1 LSA.12010.0.0.0. who are the other routers in our area? Router Link States (Area 1) Link IDADV RouterAgeSeq#ChecksumLink count 10. which two commands set the gateway of last resort to the default gateway? (Choose two.) 103 .0. It is created using the MAC Address of the loopback interface.0.0. Also the router will chose the highest loopback interface as its OSPF router ID (if available). E.0.

2.16.0 (next hop)” commands can be used to set the default gateway in a Cisco router. Question No : 115 . show version Answer: B Explanation: The “show process” (in fact.2.0.0.0.0.0.0 0.0.(Topic 3) Which command displays CPU utilization? A.1 0.0.0. 104 .16.0 C.1 E.0 B. ip route 0.0.0 0.0.2. show process C.0. the full command is “show processes”) command gives us lots of information about each process but in fact it is not easy to read. ip default-route 0.0 0. ip default-gateway 0.1 Answer: C.0 0.0.0. show system D.A. show protocols B.0 172.0.0. Below shows the output of this command (some next pages are omitted).0.0.0.0 D.0.16.0 172. ip route 172. ip default-network 0.0.E Explanation: Both the “ip default-network” and “ip route 0.

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

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

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

the correct syntax would have been “network 10.0 255. The network number is configured improperly. 108 .0.0.0. The networks attached to the new router do not appear in the routing tables of the other OSPF routers. The network subnet mask is configured improperly.0 area 0 A.0. The network wildcard mask is configured improperly. D. the mask used for the network statement is a wildcard mask similar to an access list. B.A network administrator is trying to add a new router into an established OSPF network.0. The AS is configured improperly.0. what configuration error is causing this problem? Router(config)# router ospf 1 Router(config-router)# network 10.0.(Topic 3) Refer to the exhibit.255 area 0. The process id is configured improperly.0.0 0. F. The OSPF area is configured improperly. In this specific example. C.” Question No : 119 . E. Given the information in the partial configuration shown below. Answer: C Explanation: When configuring OSPF.

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.1.1.2.0/22 to 10. What is the simplest way to accomplish this? A.The network administrator must establish a route by which London workstations can forward traffic to the Manchester workstations. B.1.16. F.0. C. Configure a dynamic routing protocol on Manchester to advertise a default route to the London router. Configure Manchester to advertise a static default route to London. E.1.1. 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. D.(Topic 3) 109 . Question No : 120 DRAG DROP . Configure a static route on London to direct all traffic destined for 172. Configure a dynamic routing protocol on London to advertise all routes to Manchester.

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

) A. routers discover the best path to destination from each neighbor. a dynamic routing protocol on CentralRouter to advertise summarized routes to InternetRouter. a dynamic routing protocol on InternetRouter to advertise summarized routes to CentralRouter. a dynamic routing protocol on InternetRouter to advertise all routes to CentralRouter. 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. a static route on InternetRouter to direct traffic that is destined for 172. Question No : 122 . B. The routing updates proceed step by step from router to router. In distance vector routing protocols.0. The network administrator requires easy configuration options and minimal routing protocol traffic.0/16 to CentralRouter. a dynamic routing protocol on CentralRouter to advertise all routes to InternetRouter. 111 . E. C.Distance means how far and Vector means in which direction.(Topic 3) Refer to the exhibit. Distance Vector routing protocols pass periodic copies of routing table to neighbor routers and accumulate distance vectors.16. D.

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

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

Switch1(config)# interface fa0/1 Switch1(config-if)# ip address 192. are good.1 D. which of the following commands should be issued on Switch1 to correct this problem? A. 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. etc.255. 114 .168. It is locally significant and must be the same throughout an area. C.0 C.Given the information in the graphic and assuming that the router and Switch2 are configured properly. for the switch itself to reach networks outside the local one. 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.24. the ip default-gateway command must be used. The numbers you can use are from 1 to 65.3 255.255.168. we know that connectivity. which can be from 0 to 4. D. Question No : 125 . or each router can have a different number-it just doesn't matter. Speed.535. Don't get this confused with area numbers.(Topic 3) Which statement describes the process ID that is used to run OSPF on a router? A.24. B. duplex.2 billion. Switch1(config)# interface fa0/1 Switch1(config-if)# duplex full Switch1(config-if)# speed 100 E. Switch1(config)# ip default-gateway 192. It is globally significant and is used to identify OSPF stub areas. However. It is locally significant and is used to identify an instance of the OSPF database. It is globally significant and is used to represent the AS number. Switch1(config)# line con0 Switch1(config-line)# password cisco Switch1(config-line)#login B.

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. show boot C.(Topic 3) Which command reveals the last method used to powercycle a router? A. show reload B. 115 . show running-config D.

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

Question No : 134 .) A.255. what three statements are true of these devices? (Choose three. We also need to assgin an area to this process ->. The Manchester serial address is 10. The serial network between the two devices has a mask of 255. The Manchester router is a Cisco 2610. B.1. D.252.1.255. C. The CDP information was sent by port Serial0/0 of the London router. The London router is a Cisco 2610. F.1. the ranges from 1 to 65535 so o is an invalid number -> but To configure OSPF.E Explanation: 123 . E. The two exhibited devices are the only Cisco devices on the network.C.1. we need a wildcard in the “network” statement.1. not a subnet mask.(Topic 3) Refer to the exhibit. Given the output that is shown. The CDP information was received on port Serial0/0 of the Manchester router.2. Answer: A.In the router ospf command. The Manchester serial address is 10.

(Topic 3) On a corporate network.D.255. we learn that the IP address of the neighbor router is 10.thebryantadvantage.) A.From the output.1. one IP network or subnetwork for each subinterface C. subinterface encapsulation identifiers that match VLAN tags E. as shown in the output ->. subinterface numbering that matches VLAN tags Answer: B.1. hosts on the same VLAN can communicate with each other. Please notice that “Interface” refers to the local port on the local router. and “Port ID (outgoing port)” refers to the port on the neighbor router. Maybe the most difficult choice of this question is the answer E or F.com/RouterOnAStickCCNACertificationExamTutorial.1. one physical interface for each subinterface B. well written article on this operation can be found here: http://www. Therefore there are only 2 available hosts in this network (22 – 2 = 2). one subinterface per VLAN F. Question No : 135 .1.2 and the question stated that the subnet mask of the network between two routers is 255.E Explanation: This scenario is commonly called a router on a stick. in this case it is the port of Manchester router.252. The platform of the neighbor router is cisco 2610.(Topic 3) Which three elements must be used when you configure a router interface for VLAN trunking? (Choose three. but they are unable to communicate with hosts on different VLANs. So we can deduce the ip address (of the serial interface) of Manchester router is 10.255. a management domain for each subinterface D.1 ->.htm Question No : 136 . What is needed to allow communication between the VLANs? 124 . A short.

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

Router1 has specific boot system commands that instruct it to load IOS from a TFTP server. [If boot system commands fail. use default fallback sequence to locate the IOS (Flash. E.For what two reasons has the router loaded its IOS image from the location that is shown? (Choose two. Bootstrap code executed 3.15 = startup-config in NVRAM 4. B.) A. Run boot system commands in order they appear in startup-config to locate the IOS b. Check for boot system commands (NVRAM) If boot system commands in startup-config a. Startup-config filE. Router1 defaulted to ROMMON mode and loaded the IOS image from a TFTP server. 126 . Router1 is acting as a TFTP server for other routers.C Explanation: The loading sequence of CISCO IOS is as follows: Booting up the router and locating the Cisco IOS 1. Check Configuration Register value (NVRAM) which can be modified using the configregister command 0 = ROM Monitor mode 1 = ROM IOS 2 . Router1 cannot locate a valid IOS image in flash memory. C. POST (power on self-test) 2. D. Cisco routers will first attempt to load an image from TFTP for management purposes. Answer: A.

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

The path of the packets will be both R3 to R2 to R1 AND R3 to R1.168.A. 192.16 255.25. The path of the packets will be R3 to R1 to R2.64 will be routed from R3 -> R1 -> LAN on R1.252 C. 192.168.252 Answer: C 128 . 192.9.28 255. which is an IP address in 192.25.10.168.25.25. 192.168. The path of the packets will be R3 to R1. From the output of the routing table of R3 we learn this network can be reach via 192. C.168. B.255.252 E.255.10. Which address and mask combination represents a summary of the routes learned by EIGRP? A.255. 192.64/26 subnet.168.255.28 255. 192.8/30 network (the network between R1 & R3) -> packets destined for 192. D.255. Answer: D Explanation: Host on the LAN attached to router R1 belongs to 192.168.255.240 B.240 D.168.255.(Topic 3) Refer to the exhibit.0 255.10.168.255. The path of the packets will be R3 to R2 to R1. Question No : 139 .0 255.255.255.10.255.240 F.25.16 255.25.255.168.

Another route is from OSPF with a metric of 782. The binary version of 16 is 10000.25.168.1111 1111. the RIPv2 route D. So.240.24 + 192.168.28 -> The increment should bE.240.255. the OSPF and RIPv2 routes Answer: B Explanation: When one route is advertised by more than one routing protocol. The subnet mask is /28. the EIGRP route C.255.255.168.168.255.255.255. 28 – 16 = 12 but 12 is not an exponentiation of 2 so we must choose 16 (24).25. all three routes E.25. EIGRP learned 4 routes and we need to find out the summary of them: + 192.Explanation: The binary version of 20 is 10100.25.168. The last is from RIPv2 and has a metric of 4.16 255.1111 1111.11110000) = 255.25. Which route or routes will the router install in the routing table? A. The binary version of 28 is 11100. the router will choose to 129 . Therefore the subnet mask is /28 (=1111 1111. The binary version of 24 is 11000. Note: From the output above.240.(Topic 3) A router has learned three possible routes that could be used to reach a destination network.16 + 192. One route is from EIGRP and has a composite metric of 20514560. the OSPF route B. the best answer should be 192. Question No : 140 .20 + 192. The mask is 255.

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

The network administrator connected to router Coffee via the console port. The network has not fully converged.0 network. D. 131 . B. console. It will encrypt the secret password and remove the enable secret password from the configuration. Answer: E Explanation: Enable vty. Only the enable secret password will be encrypted. IP routing is not enabled.22. all the passwords are encrypted. Based on the output of the show ip route command and the topology shown in the graphic. the security of device access is improved. issued the show ip route command. AUX passwords are configured on the Cisco device. and was able to ping the server.0 network cannot reach the server located on the 172. E. B.17. As a result. Use the show run command to show most passwords in clear text. C.5.(Topic 3) Users on the 172. what is the cause of the failure? A. Question No : 143 . If the service password-encryption is used. Only the enable password will be encrypted.31. It will encrypt all current and future passwords.What is the effect of using the service password-encryption command? A. Only passwords configured after the command has been entered will be encrypted.

0. It reduces the types of LSAs that are generated. It increases LSA response times. A static route is configured incorrectly. D.0. It reduces the number of required OSPF neighbor adjacencies. The correct IP address will be 172.22.19. E.C.18. 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.) A.5. It removes the need for virtual links.22.2 Question No : 144 .18.0 172. D. then many of these LSA types (Summary ASBR LSA.2.0 0. 132 . B.(Topic 3) What are two benefits of using a single OSPF area network design? (Choose two. IP route 0. Answer: C Explanation: The default route or the static route was configured with incorrect next-hop ip address 172. The FastEthernet interface on Coffee is disabled. C. It is less CPU intensive for routers in the single area. F.0. The routing table on Coffee has not updated.2 to reach server located on 172. The neighbor relationship table is not correctly updated. E.C Explanation: OSPF uses a LSDB (link state database) and fills this with LSAs (link state advertisement). Answer: B.22.0 network.31.0.

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

0 area 0 F.0 /24 to area 0? A.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.1. router ospf area 0 network 10.0 0.0/24 C.0. a static route to network 192. meaning the most specific route. router ospf network 10.1.1. Next.0.168.255 Answer: C 134 .0 255.1.168.10.1.0.10.0.255 area 0 D. it will choose the route that has the longest match.168.1. a directly connected interface with an address of 192.10. a RIP update for network 192. First. a default route with a next hop address of 192.0/24 D.255 C. router ospf 1 network 10.1.0.255.1. in this case the /24 routes will be chosen over the /16 routes.1.0 0.0 0. Question No : 147 . it will choose the best one based on a couple of things.A router receives information about network 192.0.1.0.255.255.10.0 255. an OSPF update for network 192.10.0. So. router ospf 1 network 10.254/24 B.1.0 0. What will the router consider the most reliable information about the path to that network? A. a static route to network 192.0/24 from multiple sources. from all the /24 routes it will choose the one with the lowest administrative distance.1 F.1.168.0.1.168. router ospf area 0 network 10. router ospf network 10. Directly connected routes have an AD of 1 so this will be the route chosen.0/16 E.168.(Topic 3) What command sequence will configure a router to run OSPF and add network 10.255.0 area 0 B.1.10.168.255 area 0 E.

16 0. enable 2.3 area 0 Defines an interface on which OSPF runs and defines the area ID for that interface. Step 3 router ospf process-id Example: Device(config)# router ospf 109 Enables OSPF routing and enters router configuration mode. end DETAILED STEPS Command or Action Purpose Step 1 Enable Example: Device> enable Enables privileged EXEC mode.Explanation: Enabling OSPF SUMMARY STEPS 1. Step 2 Configure terminal Example: Device# configure terminal Enters global configuration mode. configure terminal 3. network ip-address wildcard-mask area area-id 5.168. Step 4 Network ip-address wildcard-mask area area-id Example: Device(config-router)# network 192.129. Step 5 End Example: Device(config-router)# end 135 .0.0. Enter your password if prompted. router ospf process-id 4.

0 0. 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.168.html#GUID-588D1301-F63C-4DAC-BF1C-C3735EB13673 Question No : 148 . service password-encryption access-list 1 permit 192.Exits router configuration mode and returns to privileged EXEC mode. Incorrect answer: command. service password-encryption line vty 1 login password cisco D.0. 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.cisco. line vty0 4 would enable all 5 vty connections. 136 .1. Reference: http://www.255 line vty 0 4 login password cisco access-class 1 B. Which set of commands will accomplish this task? A. For anyone viewing the configuration and issuing the show run command.com/c/en/us/td/docs/ios-xml/ios/iproute_ospf/configuration/124t/iro-12-4t-book/iro-cfg.0. the password for Telnet access should be encrypted.

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

6.5.6. HFD(config)# ip route 10.0 10.255.5.0 0.0 F.0 255.(Topic 3) What is the default administrative distance of OSPF? A.6.255.6 255. HFD(config)# ip route 10.0: the destination network +fa0/0: the exit-interface Question No : 151 .6.0 255.5. 100 C.6.6. HFD(config)# ip route 10.4.6 0.0/24 network is to be configured on the HFD router.6 E. HFD(config)# ip route 10.4.0. 110 D. 90 B.5.255 fa0/0 B.0.6.5.5.5.4. Which commands will accomplish this? (Choose two.0 fa0/0 D. Each routing 138 .6.0.255.0 255.0 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.0 255.255.0.0.0.5.5.0 fa0/0: + 10.255.0 Answer: C. Administrative distance defines the reliability of a routing protocol.255.5.5. HFD(config)# ip route 10.255.5.6.) A.255 10.6 C. HFD(config)# ip route 10.255.255.A static route to the 10.255 10.4.5.0 10.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.

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.

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

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

We can check both with the “show version” command. Question No : 156 .F. Syntax Description maximum Maximum number of parallel routes that OSPF can install in a routing table. unlimited Answer: B Explanation: maximum-paths (OSPF) To control the maximum number of parallel routes that Open Shortest Path First (OSPF) can support. Also running the new IOS may require more RAM than the older one so we should check the available RAM too. 16 D. The range is from 1 to 16 routes. show running-config Answer: B. Command Default 8 paths 142 .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. use the maximum-paths 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. 2 B. 8 C.

MTU. Router# service password-encryption B. Reliability. Bandwidth B. Router(config)# service password-encryption D. 143 . This command uses a very weak encryption because the router has to be very quickly decode the passwords for its operation. that is all. Bandwidth. Bandwidth and Delay C. Delay. Router(config)# password-encryption C.(Topic 3) Which command encrypts all plaintext passwords? A. This is configured in global configuration mode. 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.(Topic 3) Which parameter or parameters are used to calculate OSPF cost in Cisco routers? A.Question No : 157 . and Load Answer: A Explanation: The well-known formula to calculate OSPF cost is Cost = 108 / Bandwidth Question No : 158 . Bandwidth. Delay. and MTU D. It is meant to prevent someone from looking over your shoulder and seeing the password.

255.) A.Question No : 159 .1 255.255.20. Router(config)# interface fastethernet 0/0 Router(config-if)# no shut down Router(config)# interface fastethernet 0/0.1 255. Router(config)# interface fastethernet 0/0 Router(config-if)# ip address 192.0 Router(config-if)# no shut down B.168.2 Router(config-subif)# encapsulation dot1q 20 Router(config-subif)# ip address 192.0 D.10.1 255. Router(config)# router eigrp 100 Router(config-router)# network 192.255.0 Router(config-router)# network 192.168.168. Switch1(config)# vlan database Switch1(config-vlan)# vtp domain XYZ Switch1(config-vlan)# vtp server 144 .(Topic 3) Refer to the exhibit.0 Router(config)# interface fastethernet 0/0.1 Router(config-subif)# encapsulation dot1q 10 Router(config-subif)# ip address 192.20.0 C.255.10.1. What commands must be configured on the 2950 switch and the router to allow communication between host 1 and host 2? (Choose two.168.255.255.168.

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

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

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

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

DLCI Answer: D Explanation: The PPP Link Control Protocol (LCP) is documented in RFC 1661. and multilink options.(Topic 4) Which PPP subprotocol negotiates authentication options? A. Question No : 166 . SLIP D. callback. LCP E.D.E Explanation: IPsec offer a number of advantages over point to point WAN links. broadband incompatibility D.(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. increased security E. Common LCP options include the PPP MRU. compression of PPP header fields. NCP B.) A.Question No : 165 . LPC negotiates link and PPP parameters to dynamically configure the data link layer of a PPP connection. reduced cost B. better throughput C. particularly when 149 . scalability F. the authentication protocol. ISDN C. reduced latency Answer: A.

254.132.65. All hosts in the Core and on local LAN should be able to access the Public Web Server.168. These include reduced cost.18.201. and increased scalability as s single WAN link can be used to connect to all locations in a VPN.201. The Public Web Server in the Server LAN has been assigned an address of 172.2 host C 192.22. Other types of access from host B to the Finance Web Server should be blocked.237.22.201. The computers in the Hosts LAN have been assigned addresses of 192. increased security since all traffic is encrypted.17.multiple locations are involved. host A 192. You have been tasked to create and apply a numbered access list to a single outbound interface.201.168. This access list can contain no more than three statements that meet these requirements.168.3 host D 192. The Core connection uses an IP address of 198.4 The Finance Web Server has been assigned an address of 172. All access from hosts in the Core or local LAN to the Finance Web Server should be blocked.201. Access to the router CLI can be gained by clicking on the appropriate host. where as a point to point link would need to be provisioned to each location.168. 150 .(Topic 4) A corporation wants to add security to its network. Question No : 167 CORRECT TEXT . All passwords have been temporarily set to “cisco”.18.1 – 192.168.237.168. The requirements are: Host B should be able to use a web browser (HTTP) to access the Finance Web Server.1 host B 192.201.

151 .

152 .

24.34 PM. use the “show ip interface brief” command: Macintosh HD:Users:danielkeller:Desktop:Screen Shot 2015-11-17 at 3. To see which interface this is.Answer: Please check the below explanation for all details.png 153 . 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.

22.17 Our last instruction is to allow all hosts in the Core and on the local LAN access to the Public Web Server (172. 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. C and D) and check to make sure you can’t access Finance Web Server from these hosts. blocking all other access to the finance web server: Corp1(config)#access-list 100 deny ip any host 172.18 any Finally.22. This can be accomplished with one command (which we need to do as our ACL needs to be no more than 3 lines long).22. just click on host B to open its web browser.18.109. Finally. we know that the servers are located on the fa0/1 interface.109.17 eq 80 Then. our next two instructions are these: Other types of access from host B to the Finance Web Server should be blocked.168.109.18) Corp1(config)#access-list 100 permit ip host 172. Corp1#configure terminal Our access-list needs to allow host B – 192. Then.22. so we will place our numbered access list here in the outbound direction. All access from hosts in the Core or local LAN to the Finance Web Server should be blocked. In the address box type http://172. repeat to make sure they can reach the public server at 172.From this.109. save the configuration Corp1(config-if)#end Corp1#copy running-config startup-config 154 .2 host 172.109.22. Click on other hosts (A.109.17 via HTTP (port 80).22. To verify.168125.22.125.17 to check if you are allowed to access Finance Web Server or not.2 to the Finance Web Server 172. If your configuration is correct then you can access it.109. so our first line is this: Corp1(config)#access-list 100 permit tcp host 192.

(Topic 4) It has become necessary to configure an existing serial interface to accept a second Frame Relay virtual circuit. IETF B. Cisco. Note: Three LMI options are supported by Cisco routers are ansi.(Topic 4) Which encapsulation type is a Frame Relay encapsulation type that is supported by Cisco routers? A. Q9333-A Annex A D. which is in conformance with RFC 1490 and RFC 2427.) 155 . Question No : 169 . 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. just press Enter to use it). Cisco. They represent the ANSI Annex D.Question No : 168 . ANSI Annex D C. and ITU Q933-A (Annex A) LMI types. Which of the following procedures are required to accomplish this task? (Choose three. Below is the output of this command (notice Cisco is the default encapsulation so it is not listed here. and Q933a. HDLC is a WAN protocol same as Frame-Relay and PPP so it is not a Frame Relay encapsulation type. respectively. 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.

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

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
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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
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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.

163

3 dlci 403(0x193. They are ideal for full-mesh topologies.D Explanation: Sample “show frame-relay map” output: R1#sh frame map Serial0/0 (up): ip 10. the number of FECN packets that are received by the router D.) A. dynamic. Answer: B. the number of BECN packets that are received by the router B. 164 . the IP address of the local router Answer: B. broadcast. B.) A.4. emulating virtual point to point leased lines.Question No : 181 . dynamic.4. D. They require a unique subnet within a routing domain. They create split-horizon issues.(Topic 4) What are two characteristics of Frame Relay point-to-point subinterfaces? (Choose two.. Question No : 182 . They require the use of NBMA options when using OSPF.(Topic 4) Which two statistics appear in show frame-relay map output? (Choose two. status defined.4.1 dlci 401(0x191. Remember.C Explanation: Subinterfaces are used for point to point frame relay connections. active Serial0/0 (up): ip 10.0x6430). E.4.0x6410). the status of the PVC that is configured on the router E. They emulate leased lines. you cannot assign multiple interfaces in a router that belong to the same IP subnet. Each subinterface requires a unique IP address/subnet. the value of the local DLCI C. C.

active Serial0/0 (up): ip 10. static.4. show frame-relay lmi C. status defined.0x6410).4. dynamic. active Serial0/0 (up): ip 10. status defined. show frame-relay pvc B. static. active Question No : 183 . dynamic.4. show frame relay end-to-end Answer: C Explanation: Sample “show frame-relay map” output: R1#sh frame map Serial0/0 (up): ip 10. broadcast.4. active Serial0/0 (up): ip 10..4 dlci 401(0x191. status defined. CHAP uses a two-way handshake.4. active Question No : 184 . show frame-relay map D.4 dlci 401(0x191. CHAP uses a three-way handshake..4.(Topic 4) Which two statements about using the CHAP authentication mechanism in a PPP link are true? (Choose two.1 dlci 401(0x191. broadcast.0x6410). C.) A. status defined. 165 . CISCO.3 dlci 403(0x193. CISCO. status defined.broadcast.4.0x6410). B.0x6430). CHAP authentication periodically occurs after link establishment.(Topic 4) What command is used to verify the DLCI destination address in a Frame Relay static configuration? A.4..

such as RIP updates. E.(Topic 4) 166 .16. to be forwarded across the PVC. 102 is the remote DLCI that will receive the information. Answer: B. allowing the routing protocol updates that use the broadcast update mechanism to be forwarded across itself. This command is required for all Frame Relay configurations. The verification is based on a shared secret (such as the client user's password). The IP address 10.8 102 broadcast was entered on the router.121.C Explanation: CHAP is an authentication scheme used by Point to Point Protocol (PPP) servers to validate the identity of remote clients.16. so the PVC supports broadcast. E. and may happen again at any time afterwards. F.D. This command should be executed from the global configuration mode. Question No : 186 . Question No : 185 . 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. CHAP has no protection from playback attacks. This happens at the time of establishing the initial link (LCP).8 is the local router port used to forward data. D. B. C. CHAP authentication passwords are sent in plaintext.(Topic 4) The command frame-relay map ip 10.121. Which of the following statements is true concerning this command? A. CHAP authentication is performed only upon link establishment. The broadcast option allows packets.

0. Layer 5 Answer: A Explanation: 167 . After reviewing the command output and graphic. Both routers are running IOS version 12. what is the most likely cause of the problem? A.1 255. That makes answer C correct. Question No : 187 . Maybe the “ip address 172. Layer 2 B. incorrect bandwidth configuration B. But we guess there is a typo in the output. Layer 3 C.100.255. The “frame-relay map ip” statement is correct thus none of the four answers above is correct.2 255.0. Layer 4 D.100.16.0.255. incorrect LMI configuration C.16. incorrect IP address Answer: C Explanation: First we have to say this is an unclear question and it is wrong.(Topic 4) At which layer of the OSI model does PPP perform? A.0 command should be “ip address 172.0.RouterA is unable to reach RouterB. incorrect map statement D.

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

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

10 IP – same with hosts in VLAN 20. host A IP address: 192.1.128 E.168. 170 . host B default gateway: 192.20. host B IP address: 192.1. VLAN 10 is configured on fa0/0.79 B.1. host B IP address: 192. A network administrator is adding two new hosts to SwitchA.1. Which three values could be used for the configuration of these hosts? (Choose three. host A default gateway: 192. Question No : 191 .168.190 Answer: A. So each hosts in VLAN 10 must use fa0/0.(Topic 5) Refer to the exhibit. Which means each host in the VLAN must corresponds with the VLAN configured on the sub-interfaces.168.) A.F Explanation: It’s a “router-on-a-stick” configuration. each hosts must also be in the same subnet as fa0/0. but this can only be done once in an IP address.10 and VLAN 20 on fa0/0.168.1.129 F.168.1.can be collapsed using ::.78 D. host A IP address: 192.C.168.64 C.10 IP address as their default gateway.

168.168.1.1.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.168.94 and for 192. you must define the relationship between the manager and the agent. Reference: http://www.So find out the usable IP addresses on each sub-interfaces – for 192. manager Answer: A.190. Question No : 192 .168. •An SNMP agent — The software component within the managed device that maintains the data for the device and reports these data.168.1.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.78 /27: 192. agent C.1. to managing systems.190. AES E.130.1.) A.1. SNMP is defined in RFCs 3411 to 3418.(Topic 5) What are three components that comprise the SNMP framework? (Choose three.78.1. Host A (using port 6 – VLAN 10) must use IP 192.168.B.1.130 /26: 192. supervisor F.168. default gateway 192.cisco. set D. MIB B. To enable the SNMP agent.168.65 – .html 171 . •A managed information base (MIB) — The collection of managed objects on the SNMP agent. default gateway 192. Cisco Nexus 1000V supports the agent and MIB.79.128 – . as needed. Host B (using port 9 – VLAN 20) must use IP 192.

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

168. by using the “logging trap 4 command.168. Which of the following should be entered into the IP properties box for the sales server? A.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.240 Default Gateway: 192.254 Subnet Mask: 255.20.17 E. For network 192.255.20. IP address: 192.20.168. For example. all the logging of emergencies.168.25 Answer: C Explanation: 173 . conditions exist 6 informational Informational messages 7 debugging Debugging messages If you specify a level with the “logging trap level” command.20.168.30 Subnet Mask: 255. IP address: 192.30 Subnet Mask: 255. errors. IP address: 192.240 Default Gateway: 192.255.255. IP address: 192.(Topic 5) An administrator must assign static IP addresses to the servers in a network. but significant. alerts.255.248 Default Gateway: 192.25 D. Question No : 195 .255.20.9 B.30 Subnet Mask: 255.168.248 Default Gateway: 192.20.1 C.168.168.20.20. that level and all the higher levels will be logged.168. the router is assigned the first usable host address while the sales server is given the last usable host address. IP address: 192.20.20.168.168.0 Default Gateway: 192.255.14 Subnet Mask: 255.255.255.255.255. critical.20. warnings will be logged.24/29.

The NAT process will be used to translate this address to a valid IP address. and cannot be used globally for Internet use. manually assigned address to the clients F.For the 192.168.30 (used for the sales server). broadcast address on the network C.B Explanation: 174 .20. which two IP addresses should never be assignable to hosts? (Choose two. the usable hosts are 192. D. Question No : 197 .168.) A.(Topic 5) When a DHCP server is configured. C. A conflict of IP addresses happens. Answer: A Explanation: Private RFC 1918 IP addresses are meant to be used by organizations locally within their own network only. IP address used by the interfaces E. because other public routers can use the same range.24. network or subnetwork IP address B.24. Addresses in a private range will not be routed on the Internet backbone. IP address leased to the LAN D. Question No : 196 .25 (router) – 192.168.24/29 network.(Topic 5) What will happen if a private IP address is assigned to a public interface connected to an ISP? A. B. designated IP address to the DHCP server Answer: A. Only the ISP router will have the capability to access the public network.

GLBP supports clear text and MD5 password authentication between GLBP group members.0. GLBP elects two AVGs and two standby AVGs for redundancy. GLBP can load share traffic across a maximum of four routers. GLBP is an open source standardized protocol that can be used with multiple vendors. GLBP supports up to eight virtual forwarders per GLBP group.(Topic 5) Refer to the exhibit. B.D. Question No : 198 .(Topic 5) What are three benefits of GLBP? (Choose three.0/8 or 13. E.1. C. 175 .1.255/24) should never be assignable to hosts.2. When try to assign these addresses to hosts.Network or subnetwork IP address (for example 11. you will receive an error message saying that they can’t be assignable. GLBP supports up to 1024 virtual routers.) A. Answer: B. F.E Question No : 199 .0.0.0/16) and broadcast address (for example 23. D.

D. the Serial0/0 interface address will not support the NAT configuration as shown. The number 1 referred to in the ip nat inside source command references access-list number 1.16.16.0/24 and 172. Question No : 200 . Because of the addressing on interface FastEthernet0/1. Answer: C Explanation: The “list 1 refers to the access-list number 1. FF02::1 176 . B.0/24.What statement is true of the configuration for this network? A.1. The configuration that is shown provides inadequate outside address space for translation of the number of inside addresses that are supported. C. ExternalRouter must be configured with static routes to networks 172.2.(Topic 5) Which IPv6 address is the all-router multicast group? A.

Monitor IP performance using the DHCP server.(Topic 5) Which two tasks does the Dynamic Host Configuration Protocol perform? (Choose two. Provide an easy management of layer 3 devices.B. E. DHCP servers assigns IP addresses from a pool of addresses and also assigns other parameters such as DNS and default gateways to hosts. It involves clients and a server operating in a client-server model. Configure IP address parameters from DHCP server to a host. D. Perform host discovery used DHCPDISCOVER message.) A. F. B. 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 . FF02::2 C. FF02::3 D. Set the IP gateway to be used by the network. 177 . Assign and renew IP address from the default pool.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). C. Answer: C.

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

0.1. allcast Answer: A.0.0. A multicast address is also used by multiple hosts.0.) A. A packet sent to an anycast address is delivered to just one of the member interfaces.2.0.0 networks. A packet that is sent to a multicast address is delivered to all interfaces that have joined the corresponding multicast group.(Topic 5) 179 . and 10. anycast B.0.0/22 subnet mask will include the 10. and only those four networks. An anycast address is assigned to a group of interfaces. and multicast addressing. 10.C Explanation: IPv6 addresses are classified by the primary addressing and routing methodologies common in networking: unicast addressing. usually belonging to different nodes. typically the nearest host. and differ only by their presence in the network at multiple points. according to the routing protocol’s definition of distance.Answer: B Explanation: The 10. A unicast address identifies a single network interface. The Internet Protocol delivers packets sent to a unicast address to that specific interface.(Topic 5) Which two are features of IPv6? (Choose two. they have the same format as unicast addresses. podcast E. which acquire the multicast address destination by participating in the multicast distribution protocol among the network routers.3.0. Anycast addresses cannot be identified easily.0. 10. broadcast C.0.0. multicast D. Question No : 205 . Question No : 204 . Almost any unicast address can be employed as an anycast address. anycast addressing.

Leading zeros in an IPv6 16 bit hexadecimal field are mandatory.B301 Answer: C Explanation: With HSRP. 0007. + With HSRP version 1. There are four types of IPv6 addresses: unicast.B400.0C9F.0C07. Reference: IPv6 Addressing at a Glance – Cisco PDF Question No : 206 . anycast.ACxx . There are two version of HSRP. in which xxx is the HSRP group. multicast). 0007. 0000. + With HSRP version 2. A single interface may be assigned multiple IPv6 addresses of any type.(Topic 5) What is a valid HSRP virtual MAC address? A.Which two of these statements are true of IPv6 address representation? (Choose two.5E00. the virtual router’s MAC address is 0000. Every IPv6-enabled interface must contain at least one loopback and one link-local address. the virtual MAC address if 0000.Fxxx. in which xx is the HSRP group.01A3 B.0c07.AC15 D. 0000.) A. two or more devices support a virtual router with a fictitious MAC address and unique IP address. 180 .AE01 C.5E00. and broadcast. C. The first 64 bits represent the dynamically created interface ID.C Explanation: A single interface may be assigned multiple addresses of any type (unicast. anycast. Answer: B. Optionally. every interface can have multiple unique local and global addresses. B. D. Every IPv6 interface contains at least one loopback address. multicast. E.

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

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

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

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

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

1. 192.56/26 B.16. Therefore subnet bits are 2 bits (8-6) in fourth octet. Which subnet address should this network use to provide enough usable addresses while wasting the fewest addresses? A.255.(Topic 5) Given an IP address 172. what is the correct network address? 191 .28.240.168. 192.64/27 Answer: C Explanation: A subnet with 60 host is 2*2*2*2*2*2 = 64 -2 == 62 6 bits needed for hosts part.252 with a subnet mask of 255.0.56/27 C. 192.Question No : 221 .168.1. A new subnet with 60 hosts has been added to the network.168.1.(Topic 5) Refer to the exhibit. 192. 8bits+ 8bits+ 8bits + 2bits = /26 /26 bits subnet is 24bits + 11000000 = 24bits + 192 256 – 192 = 64 0 -63 64 – 127 Question No : 222 .64/26 D.1.168.

28.0 C.16. 0::/10 Answer: A Explanation: In IPv6 the loopback address is written as.172.16.0 D.16. Question No : 223 .(Topic 5) Which IPv6 address is the equivalent of the IPv4 interface loopback address 127.31. 172.0 B. with the first 127 bits being '0' and the 128th bit being '1'. ::1 B.1 .(Topic 5) Which option is a valid IPv6 address? A.16.16. FEC0:ABCD:WXYZ:0067::2A4 192 .24.16.0.16.16.254.16.1? A.255. 2000::/3 D.0 Answer: A Explanation: For this example. so could also be written as ::1/128. the network range is 172.0. 172.31. ::1 This is a 128bit number. 172. the network address is 172. 2002:7654:A1AD:61:81AF:CCC1 C. 172.16.16.A.0. Question No : 224 . 2001:0000:130F::099a::12a B. It's just a single address.0 and the broadcast IP address is 172. :: C.

0. An example of an IPv6 address is 2001:0db8:85a3:0000:0000:8a2e:0370:7334.(Topic 5) Refer to the exhibit.0. The /21 subnet will 193 . 172.0.0.16.16./16 D.16. The groups are separated by colons (:). The leading 0’s in a group can be collapsed using ::. each group representing 16 bits (two octets).16./20 network is the best option as it includes all networks from 172.0 – 172. Which address range efficiently summarizes the routing table of the addresses for router Main? A.16.16.0.16.0. 172. 172.0/18 Answer: B Explanation: The 172./20 C.0.0.D. but this can only be done once in an IP address.0. Question No : 225 .16.0./21 B. 2004:1:25A4:886F::1 Answer: D Explanation: An IPv6 address is represented as eight groups of four hexadecimal digits.0 and does it more efficiently than the /16 and /18 subnets. 172.

32.0/18.32.0 /17 F. All these 3 subnets have the same form of 172.32.x so our summarized subnet must be also in that form -> Only A.16.16.16. 172. 172.0. The smallest subnet mask of these 3 subnets is /18 so our summarized subnet must also 194 .0.16.0 /20 C.0 /16 E.0. 172. 172.(Topic 5) Refer to the exhibit.16. 172.0.0 /16 Answer: A Explanation: Router A receives 3 subnets: 172. what summary address would be sent from router A? A.16.0/24 and 172.64. In this VLSM addressing scheme. 172. Question No : 226 .x.0/18.64.0 /16 B.128.16. B or .0 /24 D. 172.0.0.not include all the other subnets in this one single summarized address.

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

Which ACL can be used? A. Question No : 229 . InformRequest The InformRequest message allows NMS stations to share trap information. 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. reducing their utility to that of a network monitor. standard B. -> A is correct.SNMPv1/v2 can neither authenticate the source of a management message nor provide encryption. extended C. Because of these deficiencies. Without authentication. SNMPv3 was issued as a set of Proposed Standards in January 1998. To correct the security deficiencies of SNMPv1/v2. dynamic D. not between NMS stations and agents. no network control applications can be supported.) InformRequest messages are generally used between NMS stations. (Traps are issued by SNMP agents when a device change occurs.(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. Agents that cannot provide values for all variables in a list will send partial information. It is also possible for nonauthorized users to eavesdrop on management information as it passes from managed systems to the management system. -> E is correct. reflexive Answer: C Explanation: 196 . 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. it is possible for nonauthorized users to exercise SNMP network management functions. Note: These two messages are carried over SNMPv3. -> C is correct.

The authentication process is done by the router or a central access server such as a TACACS+ or RADIUS server.188.31. etc. INFORM C. Their purpose is merely to notify the other application that something has happened.31. 10.B Explanation: A TRAP is a SNMP message sent from one application to another (which is typically on a remote host).cisco. Question No : 231 .(Topic 5) You are working in a data center environment and are assigned the address range 10. The configuration of dynamic ACL can be read here: http://www. 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.com/en/US/tech/tk583/tk822/technologies_tech_note09186a0080094524.(Topic 5) What are the alert messages generated by SNMP agents called? A. shtml Question No : 230 .188. TRAP B. GET D.We can use a dynamic access list to authenticate a remote user with a specific username and password.0/26 197 . SET Answer: A. You are asked to develop an IP addressing plan to allow the maximum number of subnets with as many as 30 hosts each. Which IP address range meets these requirements? A. SNMPv2 PDUs fixed this by introducing the notion of an INFORM.0/23. which is nothing more than an acknowledged TRAP. has been noticed.

31. During address assignment. 10.0/25 C.188. The address is removed from the pool until the conflict is resolved.188. the address is removed from the pool. Answer: A Explanation: An address conflict occurs when two hosts use the same IP address. C. DHCP checks for conflicts using ping and gratuitous ARP.B. D. Only the IP detected by Gratuitous ARP is removed from the pool. If a conflict is detected. Also the question requires the maximum number of subnets (which minimum the number of hosts-per-subnet) so /27 is the best choice.0/28 D. The address will not be assigned until the administrator resolves the conflict. 10. 10. The IP will be shown.0/27 E. even after the conflict is resolved.31.0/29 Answer: D Explanation: Each subnet has 30 hosts < 32 = 25 so we need a subnet mask which has at least 5 bit 0s -> /27.188. E.188. Question No : 232 . 198 .31. 10. The address remains in the pool until the conflict is resolved. Only the IP detected by Ping is removed from the pool. Which rule does the DHCP server use when there is an IP address conflict? A.(Topic 5) Refer to the exhibit.31. B.

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

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

Level Authentication Encryption What Happens v1 noAuthNoPriv Community String No Uses a community string match for authentication. v3 noAuthNoPriv Username No Uses a username 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.cisco. Reference: http://www. Provides DES 56-bit encryption in addition to authentication based on the CBC-DES (DES-56) standard.h tml Question No : 236 . v3 authPriv MD5 or SHA DES Provides authentication based on the HMAC-MD5 or HMAC-SHA algorithms. v3 authNoPriv MD5 or SHA No Provides authentication based on the HMAC-MD5 or HMAC-SHA algorithms.(Topic 5) 201 .

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

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

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

172.(Topic 5) 205 .1.1.0/22 D.6.1.0 – 172.0/24 Answer: C Explanation: The 172.0/24 172. 172. What is the most efficient summarization that R1 can use to advertise its networks to R2? A.4.7.1.7.0/22 B.1.4. Question No : 242 .128/25 172.0/21 C.0.1.1.4.7.0.1.1.6.4. 172.1.1.0/25 172.0/24 172.0/24 172.5. 172.1.4.0/24 172.1.0/24 E.255.Refer to the exhibit.1.5.0/22 subnet encompasses all routes from the IP range 172. 172.4.1.0/24 172.

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

The sender creates a packet and forwards the packet to the anycast address as the destination address which goes to the nearest router. These IPv6 addresses are global addresses.255.(Topic 5) Which three are characteristics of an IPv6 anycast address? (Choose three. The anycast packet in a LAN setting forwards the packet to the neighbor it learned about first.Question No : 244 . these addresses can be assigned to more than one interface unlike an IPv6 unicast address. Question No : 245 .E. the same address for multiple devices in the group F. Anycast is designed to send a packet to the nearest interface that is a part of that anycast group.) A. 0. 255. any-to-many communication model D. one-to-nearest communication model C. delivery of packets to the group interface that is closest to the sending device Answer: B.0.0 207 . 255.255.255. one-to-many communication model B.0. with each LAN containing 5 to 26 hosts? A.255.240 B. The nearest router or interface is found by using the metric of a routing protocol currently running on the network. However in a LAN setting the nearest interface is found depending on the order the neighbors were learned. a unique IPv6 address for each device in the group E.252 C.(Topic 5) Which subnet mask would be appropriate for a network address range to be subnetted for up to eight LANs.F Explanation: A new address type made specifically for IPv6 is called the Anycast Address.

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

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

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

252. or other significant events.What SNMP message alerts the manager to a condition on the network? A. link status (up or down). Traps are messages alerting the SNMP manager to a condition on the network.0 D. Which subnet mask will place all hosts on Network B in the same subnet with the least amount of wasted addresses? A. 255.254. loss of connection to a neighbor. 255.0 B.com/c/en/us/td/docs/switches/lan/catalyst2950/software/release/121_9_ea1/configuration/guide/scg/swsnmp.html Question No : 251 . Reference: http://www. restarts.255. 255.255. 255.(Topic 5) Refer to the exhibit. Traps can mean improper user authentication. trap D.248. closing of a TCP connection.255.255. MAC address tracking.0 211 . capture Answer: C Explanation: An agent can send unsolicited traps to the manager. get C. response B.cisco.255.0 C.

255.255. 255.0 is the subnet mask for the 192.0 Answer: B. which is a bit mask covering the number of bits used in the prefix.255. Such subnets can be arranged hierarchically.254. 255. Routers are used to manage traffic and constitute borders between subnets.1.255.255.168. with the organization's network address space (see also Autonomous System) partitioned into a tree-like structure.0 Question No : 252 .0 D. An IPv4 subnet mask is frequently expressed in quad-dotted decimal representation. e.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.Answer: B Explanation: 310 hosts < 512 = 29 -> We need a subnet mask of 9 bits 0 -> 1111 1111.255. Working with only one Class B address.1.255. A routing prefix is the sequence of leading bits of an IP address that precede the portion of the address used as host identifier.224 E.255.) A.248.192 F. 255. 255.1111 1111.g.. 212 .1111 1110.0000 0000 -> 255.(Topic 5) A national retail chain needs to design an IP addressing scheme to support a nationwide network. which of the following subnet masks will support an appropriate addressing scheme? (Choose two. 255.128 C.255. 255.255.255. The company needs a minimum of 300 sub-networks and a maximum of 50 host addresses per subnet. 255.168.0 B.0 network with a 24-bit routing prefix (192.252.255.255. In IPv4 networks. the routing prefix is often expressed as a "subnet mask".0/24).

1.255.0/23 subnetted with mask 255. 10.) A. 10.0/23 is the correct answer.10. So our initial network should be 30 – 7 = 23.252 D. The network used for point-to-point connection should be /30. You can understand it more clearly when writing it in binary form: /23 = 1111 1111.252 B.10. Which IP addressing scheme defines the address range and subnet mask that meet the requirement and waste the fewest subnet and host addresses? A. So 10.0.0.255.0.252 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).10.0.(Topic 5) The network administrator is asked to configure 113 point-to-point links.255. optional IPsec B.(Topic 5) What are three features of the IPv6 protocol? (Choose three.255.0000 0000 /30 = 1111 1111. 10.252 C. complicated header 213 .10.10.10.0/16 subnetted with mask 255.0/18 subnetted with mask 255.1111 1100 (borrow 7 bits) Question No : 254 . autoconfiguration C.1111 1111.0/24 subnetted with mask 255. 10.255.255.1111 1110.252 E.0/25 subnetted with mask 255.255.255.255.Question No : 253 .255. 10. no broadcasts D.1.

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

What are three message types that will be sent to the Syslog server? (Choose three. critical E.) A.(Topic 5) A network administrator enters the following command on a router: logging trap 3.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 . error Answer: B.Question No : 256 . informational B. emergency C. debug F. warning D.D.

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

conditions exist 6 informational Informational messages 7 debugging Debugging messages The highest level is level 0 (emergencies). by using the “logging console warnings” command.A. Emergencies B. warnings will be displayed. Warnings Answer: A. but significant. Question No : 259 . Critical D.B.C. For example. The lowest level is level 7. that level and all the higher levels will be displayed.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.(Topic 5) Refer to the exhibit. If you specify a level with the “logging console level” command. critical. alerts. Alerts C. all the logging of emergencies. 217 . Errors E. errors.

172. NAT eliminates the need to re-address all hosts that require external access.3. Question No : 260 . Dynamic NAT facilitates connections from the outside of the network.172. Network A . Network A .3.0/30 is valid.3. Network A . D. Which network addresses should be used for Link A and Network A? (Choose two. C. Link A . Link A .192/26 D.3. 218 .172.D Explanation: Only a /30 is needed for the point to point link and sine the use of the ip subnet-zero was used.3. a /25 is required for 120 hosts and again 172.48/26 B.16.0/30 E. Link A .3.16.172.40/30 F.16. valid option. B.3.128/25 is the best.16.112/30 Answer: B.128/25 C.16.172.) A.All of the routers in the network are configured with the ip subnet-zero command.3.(Topic 5) What are two benefits of using NAT? (Choose two. NAT facilitates end-to-end communication when IPsec is enabled.16.16. 172. NAT conserves addresses through host MAC-level multiplexing. Also.172.) A.16.

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

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

F. Also. A dynamically learned MAC address is saved in the running-configuration file. B. Port security needs to be enabled on the interface. Question No : 263 . Port security needs to be globally enabled.) A. Port security needs to be configured to allow only one learned MAC address. D. Answer: B Explanation: In the interface configuration mode. Port security interface counters need to be cleared before using the show command. the command switchport port-security mac-address 221 . B. E. A dynamically learned MAC address is saved in the VLAN database.D Explanation: From the output we can see that port security is disabled so this needs to be enabled. Statically configured MAC addresses are saved in the running-configuration file if frames from that address are received. Answer: B. C. E. Statically configured MAC addresses are saved in the startup-configuration file if frames from that address are received.two. The port security configuration needs to be saved to NVRAM before it can become active. D. 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 startup-configuration file.(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. C. Port security needs to be configured to shut down the interface in the event of a violation.

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

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

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

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

149.255. SW1#show running-config D.146.0.168.1.255 226 . access-list 10 permit ip 192.168.0 0.149. SW1#show switchport port-security interface FastEthernet 0/12 Answer: C. 192.D Explanation: We can verify whether port security has been configured by using the “show runningconfig” or “show port-security interface” for more detail. would you use to accomplish this task? (Choose two. access-list 10 permit ip 192. SW1#show port-security interface FastEthernet 0/12 E.146. when combined.168. An example of the output of “show port-security interface” command is shown below: Question No : 268 .168. Which two ACL statements.0.255 D.148. access-list 10 permit ip 192.0 0.0.168.255 C.148.0 only. and 192.0. 192.0.0.147.255 B. to allow traffic from hosts on networks 192.168.0 0.255.(Topic 6) A network administrator is configuring ACLs on a Cisco router.1.0.) A.0 0.C. access-list 10 permit ip 192.168.147.168.

1. access-list 10 permit ip 192. Question No : 269 .148.0 0. no ip access-class 102 in B.0.0 Answer: A.0 networks. access-list 10 permit ip 192. and “access-list 10 permit ip 192.168.0. no ip access-class 102 out C.255 F.146.0 0.146.255” would allow only the 192.0 and 192.168. An attempt to deny web access to a subnet blocks all traffic from the subnet.168.255. Which interface command immediately removes the effect of ACL 102? A.0.0 and 192.E.0 0.168.168.0 255.148.255.168.0 networks.255” would allow only the 192.1.C Explanation: “access-list 10 permit ip 192.146.149.168.147.(Topic 6) Refer to the exhibit.0. no ip access-group 102 in 227 .168.146.

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

(Topic 6) What can be done to secure the virtual terminal interfaces on a router? (Choose two. The most simple way to secure the virtual terminal interface is to configure a username & password to prevent unauthorized login. Moreover.168. The “access-group” command is only used to apply an access list to a physical interface -> C is not correct. To apply an access list to a virtual terminal interface we must use the “access-class” command. access-list 2500 deny tcp any host 192. access list 101 deny tcp any host 192. someone can still access the virtual terminal interfaces via other interfaces -> We cannot physically secure a virtual interface because it is “virtual” ->.Which item represents the standard IP ACL? A.168.1.168.E Explanation: It is a waste to administratively shut down the interface. Create an access list and apply it to the virtual terminal interfaces with the access-group command.0.255 C.0.1 0. 229 . D. E. B. Answer: 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. access-list 50 deny 192. Enter an access list and apply it to the virtual terminal interfaces using the access-class command.) A. Question No : 272 . C.1.1 D. access-list 110 permit ip any any B. Administratively shut down the interface. Physically secure the interface.1. Configure a virtual terminal password and login process.

All other traffic is permitted. all other traffic should be allowed.(Topic 6) A network associate is adding security to the configuration of the Corp1 router. 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. 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. 230 .) Answer: Question No : 274 CORRECT TEXT . The user on host C should be able to use a web browser to access financial information from 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. (Not all options are used.Question No : 273 DRAG DROP .(Topic 6) Drag the security features on the left to the specific security risks they help protect against on the right.

The Finance Web Server is assigned an IP address of 172.33.23 eq 80 comment: To deny any source to access finance server address (172.23.254 host A 192.242.33.33.33. All passwords have been temporarily set to "cisco".17 172.22.Access to the router CLI can be gained by clicking on the appropriate host.168.33.22.22.168.242.1 host B 192.22.30.242.168.242.168.33.23) {destination addr} on port number 80 (web) Corp1(config)#access-list 100 deny tcp any host 172.22. The computers in the Hosts LAN have been assigned addresses of 192.33.1 192.23) {destination addr} on port number 80 (web) Corp1(config)#access-list 100 permit tcp host 192.22.242.23 eq 80 231 .33.22.196.168.168.3 host 172. Answer: Select the console on Corp1 router Configuring ACL Corp1>enable Corp1#configure terminal comment: To permit only Host C (192.168.4 The servers in the Server LAN have been assigned addresses of 172.242. The Core connection uses an IP address of 198.2 host C 192.65.242.3 host D 192.18.3){source addr} to access finance server address (172.168.

Step 4: If only Host C (192.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.3) can access the Finance Web Server you can click on NEXT button to successfully submit the ACL SIM. This should be corrected in order ACL to work type this commands at interface mode : no ip address 192.33.(Topic 6) Which statement about access lists that are applied to an interface is true? A. Corp1(config)#interface fa 0/1 If the ip address configured already is incorrect as well as the subnet mask. You can apply only one access list on any interface. Question No : 275 .22.x. Select address box of the web browser and type the ip address of finance web server (172.22.3) has access to the server. & D. If the other host can also access then maybe something went wrong in your configuration.30 ) Comment: Place the ACL to check for packets going outside the interface towards the finance web server.240 ( range of address specified going to server is given as 172. Step 3: Only Host C (192.242.23) to test whether it permits /deny access to the finance web Server.x.x.255. C.x. Step2: Click on each host A.22. B. B. Corp1#copy running-config startup-config Verifying the Configuration: Step1: show ip interface brief command identifies the interface on which to apply access list.17 .33.242.168. Corp1(config-if)#ip access-group 100 out Corp1(config-if)#end Important: To save your running config to startup before exit. 232 . You can place as many access lists as you want on any interface. 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. Host opens a web browser page.242.255. Check whether you configured correctly and in order.172.30 255.x (removes incorrect configured ipaddress and subnet mask) Configure Correct IP Address and subnet mask: ip address 172.x 255.22.242.168.

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

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

All other traffic is permitted. No other hosts will have web access to the Finance Web Server. 235 . it will be shut down to prevent a loop. 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. all other traffic should be allowed. Infrastructure Management Question No : 279 CORRECT TEXT .(Topic 7) A network associate is adding security to the configuration of the Corp1 router. Since there are multiple resources for the corporation at this location including other resources on the Finance Web Server. The user on host C should be able to use a web browser to access financial information from the Finance Web Server. 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.E. No other hosts from the LAN nor the Core should be able to use a web browser to access this server. when a PortFast receives a BPDU. With BPDU Guard. Topic 7. BPDU Filter Answer: D Explanation: We only enable PortFast feature on access ports (ports connected to end stations).

26 eq www Corp1(config)# access-list 128 deny tcp any host 172.141.26 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 .(Topic 7) 236 .22.1 host 172.1 host B 192.168.247. The Core connection uses an IP address of 198.168.168.240.3 Answer: Corp1#conf t Corp1(config)# access-list 128 permit tcp host 192.168.240.22.168.240.240.Access to the router CLI can be gained by clicking on the appropriate host.141.168.2 host C 192.1 192. All passwords have been temporarily set to "cisco".254 host A 192.240.18.65 The computers in the Hosts LAN have been assigned addresses of 192.240.

Netflow C.What are three factors a network administrator must consider before implementing Netflow in the network? (Choose three. Reference: http://searchenterprisewan.(Topic 7) What Cisco IOS feature can be enabled to pinpoint an application that is causing slow network performance? A. Also bear in mind that the flows from aggregating large numbers of devices can add up. CPU utilization B. WAN encapsulation Answer: A.com/tip/How-the-NetFlow-protocolmonitors-your-WAN Question No : 281 .B. port availability E. Another thing to keep in mind is the amount of data you're going to be sending across the network.) A. SNMP version F. Depending on how much traffic you have and how you configure it. SNMP B. Services running on the device may also be affected. 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. Some symptoms of high CPU utilization are very large jitter and increased delay. where Netflow data will be sent C. Cisco's performance testing seems to indicate that newer hardware can accommodate this load pretty well. the traffic can be substantial. IP SLA Answer: B 237 . but you will still want to check it out before you turn on the feature.C Explanation: NetFlow has a reputation for increasing CPU utilization on your network devices.techtarget. WCCP D. number of devices exporting Netflow data D. For example.

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

239 .

240 .

241 .

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. the username is not configured on R3 and R6. 242 . What is causing the problem? A. D. There is an area ID mismatch.An OSPF neighbor adjacency is not formed between R3 in the main office and R6 in the Branch3 office. There is a PPP authentication issue. C. The R3 router ID is configured on R6. There is an OSPF hello and dead interval mismatch. B.

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

244 .

245 .

246 .

247 .

1. C. B.1 network. Success rate is 0 percent (0/5) Why are the pings failing? A. timeout is 2 seconds: Packet sent with a source address of 10.1. The network statement is missing on R1.1.5.1. The network statement is missing on R5.5.1.1. The loopback interface is shut down on R5. The IP address that is configured on the Lo1 interface on R5 is incorrect.55.55 source 10. we see that the 10.1 Type escape sequence to abort.Study the following output taken on R1: R1# Ping 10.1 …….1. Sending 5.1.5.1 network 248 .5. Answer: C Explanation: R5 does not have a route to the 10. D. When looking at the EIGRP configuration on R1. 100-byte ICMP Echos to 10. which is the loopback0 IP address of R1.

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

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

251 .

252 .

253 .

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

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

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

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

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 .

0 0. Interface S0/0 on RouterA is not receiving a clock signal from the CSU/DSU. Answer: B Explanation: From the output of access-list 114: access-list 114 permit ip 10.4.168. what are two possible reasons for the failure? (Choose two.4.) A.(Topic 7) Refer to the exhibit. F.0 network would not be accepted from the fa0/0 interface.4. D. Based on the output from RouterA.A. B.4.2. Routing protocol updates for the 10. C.0. B.0.3.168.4. Attempts to telnet to the router would fail. 263 . Interface S0/0 on RouterA is configured with an incorrect subnet mask. Hosts in network 192. IP traffic would be passed through the interface but TCP and UDP traffic would not.0 network. D.4.255 any we can easily understand that this access list allows all traffic (ip) from 10.4. It would allow all traffic from the 10. The encapsulation that is configured on S0/0 of RouterB does not match the encapsulation that is configured on S0/0 of RouterA.0.0 are unable to reach hosts in network 192. E.4. The IP address that is configured on S0/0 of RouterB is not in the correct subnet. C. The cable that is connected to S0/0 on RouterA is faulty.0/24 network Question No : 288 . Interface S0/0 on RouterB is administratively down.

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

Verify IP configuration belongs to layer 3. If it works then the NIC card (layer 1.The question asks us to “begin with the lowest layer” so we have to begin with Layer 1: verify physical connection. 2) and TCP/IP stack (layer 3) are working properly.com.0. microsoft. rollover…) is correct. straight-through. We are using a URL so this step belongs to layer 7 of the OSI model.com to assure that the far end server is not down (it sometimes make we think we can’t access to the Internet). For your information. 265 . For example.1.0. Question No : 290 . We do this by simply making a ping to the loopback interface 127.(Topic 7) Refer to the exhibit. the signal on the cable is acceptable… Next we “verify NIC operation”. the RJ45 headers are plugged in. in this case an Ethernet cable connection. “verify Ethernet cable connection” means that we check if the type of connection (crossover. checking if the IP can be assignable for host. 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.

Your company has connected the routers R1. Question No : 291 .1. Use the appropriate show commands to troubleshoot the issues. D. Answer: D Explanation: Now let’s find out the range of the networks on serial link: For the network 192. Assuming routing is properly configured.(Topic 7) Scenario Refer to the topology. The Fa0/0 interface on RouterA is on a subnet that can't be used. and R3 with serial links. You are required to troubleshoot and resolve the EIGRP issues between the various routers. E. The serial interfaces of the routers are not on the same subnet.1.1.65/27: Increment: 32 Network address: 192.168. The address of SwitchA is a subnet address.64 Broadcast address: 192.168.168.1. what is the cause of this problem? A. respectively.32 Broadcast address: 192. B.95 -> These two IP addresses don’t belong to the same network and they can’t see each other.HostA cannot ping HostB.168.1. The Fa0/0 interface on RouterB is using a broadcast address. R2.62/27: Increment: 32 Network address: 192.63 For the network 192. 266 . The EIGRP routing protocol is configured. SW1 and SW2 are also connected to the routers R4 and R5.168.168. HostA is not on the same subnet as its default gateway. R2 and R3 are connected to the switches SW1 and SW2.1. C.

267 .

268 .

269 .

270 .

so it does not peer with R5. and 10. the following must match: . C.0. B.0 network is displayed. and the network command is missing on R4. Automatic summarization is enabled. so they are not being advertised. 10. so only the 10. D. The loopback addresses haven't been advertised. The interfaces are shutdown.The loopback interfaces on R4 with the IP addresses of 10.4.Authentication method and key strings Here. Answer: B Explanation: For an EIGRP neighbor to form.4.AS numbers .5/32.4. R4 has been incorrectly configured to be in another AS.6/32 are not appearing in the routing table of R5. Why are the interfaces missing? A.4/32.0.4. 271 .Neighbors must be in the same subnet .4. we see that R4 is configured for EIGRP AS 2.K values .4. when it should be AS 1.

(Topic 7) In which circumstance are multiple copies of the same unicast frame likely to be transmitted in a switched LAN? A. during high traffic periods B. after broken links are re-established C. It is an example of an improperly implemented redundant topology. in an improperly implemented redundant topology E. when upper-layer protocols require high reliability D.Question No : 292 . 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. 272 .

Configure the router per the following requirements: Name of the router is R2 Enable. 1. Complete the network installation by performing the initial router configurations and configuring R1PV2 routing using the router command line interface (CLI) on the RC. The password to allow telnet access to the router is xxx 5. Name or the router is xxx 2.router has last assignable host address in the subnet.2.(Topic 7) Central Florida Widgets recently installed a new router in their office.0. Enable. Router protocol is RIPV2 Attention: In practical examinations. IP information 273 .176/28 . secret password is xxx 3.router has fourth assignable host address in subnet Serial network is 192. the actual information will prevail.201.Question No : 293 CORRECT TEXT .0/27 . Password In access user EXEC mode using the console is xxx 4.165. 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. please note the following. Interfaces should be enabled.

176 R2(config-router)#end R2#copy run start Question No : 294 .255. respectively. The EIGRP routing protocol is configured.201. and R3 with serial links.0 R2(config-router)#network 192.240 R2(config-if)#no shutdown R2(config-if)#exit R2(config)#router rip R2(config-router)#version 2 R2(config-router)#network 209.165.255.165. R2.2.0.224 R2(config)#interface s0/0/0 R2(config-if)#ip address 192.(Topic 7) Scenario Refer to the topology.201. 274 .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. SW1 and SW2 are also connected to the routers R4 and R5.4 255. 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.0.255. Use the appropriate show commands to troubleshoot the issues.190 255.2. Your company has connected the routers R1.255.

275 .

276 .

277 .

278 .

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

16. they are both using e0/0.168. The IP addresses are in the 192.As you can see.0 network: 280 .

ingress interface E. source MAC address C.168. IP next-hop Answer: A. destination IP address F. Question No : 295 . egress interface D.But when we look at the EIGRP configuration.0” command is missing on R6. the “network 192. These attributes are the IP packet identity or fingerprint of the packet and 281 .) A.16.E Explanation: Each packet that is forwarded within a router or switch is examined for a set of IP packet attributes.(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.D. source IP address B.

Traditionally. Reference: http://www. protocol interface and class of service are grouped into a flow and then packets and bytes are tallied.(Topic 7) Refer to the exhibit.determine if the packet is unique or similar to other packets. 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. It is suspected that the cable connected to switch port Fa0/9 on Switch1 is disconnected. 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. source/destination ports.html Question No : 296 . A problem with network connectivity has been observed. an IP Flow is based on a set of 5 and up to 7 IP packet attributes.cisco. What would be an effect of this 282 .com/c/en/us/products/collateral/ios-nx-os-software/iosnetflow/prod_white_paper0900aecd80406232.

Host B would not be able to access the server in VLAN9.cable being disconnected? A. The transfer of files from Host B to the server in VLAN9 would be significantly slower. B.(Topic 7) Which protocol can cause overload on a CPU of a managed device? A. You can determine the cause of high CPU use in a router by using the output of the show 283 . C. In addition. Question No : 297 . Netflow B. D. Communication between VLAN3 and the other VLANs would be disabled. 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. WCCP C. For less than a minute. IP SLA D. 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. Note that the terms bridge and switch are used interchangeably when discussing STP. The actual mechanics of how bridges communicate and how the STP algorithm works will be discussed at length in the following topics. connections between switches are assumed to be trunks. Then normal network function would resume. 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. unless otherwise indicated.

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

so it works at the network layer. The command ping is often used to verify the network connectivity.10. session layer E. At which OSI layer is the problem? A.(Topic 7) Scenario: Refer to the topology. access layer D.Question No : 299 . Your company has decided to connect the main office with three 285 . which is a network layer protocol used to propagate control message between host and router.(Topic 7) Refer to the exhibit. Question No : 300 . application layer C. data link layer B. network layer Answer: E Explanation: The command ping uses ICMP protocol. An administrator pings the default gateway at 10.10.1 and sees the output as shown.

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.other remote branch offices using point-to-point serial links.

287 .

288 .

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

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 .

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

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

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

303 .

304 .

305 .

306 . 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.

MAC address Answer: A. Remove access-group 106 in from interface fa0/0 and add access-group 104 in.C. Remove access-group 102 out from interface s0/0/0 and add access-group 114 in E. Change the ip access-group command on fa0/0 from “in” to “out”. L3 protocol type E. IP address B.D Explanation: 307 . Port numbers D. D. Interface name C. The 3rd line denies all telnet traffic and the 4th line allows icmp traffic to be sent (ping).B. 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. Remove access-group 106 in from interface fa0/0 and add access-group 115 in. 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. C. 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.

Functionality can be tested by clicking on the host provided for testing.110/29 inside local addresses .184. 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.192.18.30/28 number of inside hosts – 14 308 .(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.100. 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 . Configuration information: router name – Weaver inside global addresses – 198. Traditionally.What is an IP Flow? Each packet that is forwarded within a router or switch is examined for a set of IP packet attributes. These attributes are the IP packet identity or fingerprint of the packet and determine if the packet is unique or similar to other packets. no routing protocol will be required) All passwords have been temporarily set to “cisco”. an IP Flow is based on a set of 5 and up to 7 IP packet attributes.168.198.105 .184.100. The appropriate static routes have also been configured (since the company will be a stub network.168.17 – 192.18.

105 198.100.110).17 to 192.18.0.18.18.184.255. specifying the access list that was defined in the prior step. The company has 14 hosts that need to access the internet simultaneously. which means a source address from 192.18. The ISP has provided the company six public IP addresses of 198.184. Weaver(config)#ip nat pool mypool 198.15 Establish dynamic source translation.18.168.184.105 to 198.30.105 to 198.168.18.184.184.184.100.105 198.168.17 – 192.184.255.A network associate is configuring a router for the weaver company to provide internet access.0.184.100.248 Create a standard access control list that permits the addresses that are to be translated. The hosts in the company LAN have been assigned private space addresses in the range of 192.100. Answer: The company has 14 hosts that need to access the internet simultaneously but we just have 6 public IP addresses from 198.30. Overload keyword allows to map multiple IP addresses to a single registered IP address 309 .168.110/29.18.18. 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.110.16 0. Weaver(config)#ip nat inside source list 1 pool mypool overload This command translates all source addresses that pass access list 1. into an address from the pool named mypool (the pool contains addresses from 198. Weaver(config)#access-list 1 permit 192.110 netmask 255.100.168.

The OSPF area is not configured properly. what is the cause of this problem? A.2. The routers cannot establish an adjacency relationship on their common Ethernet link. 310 . The priority on R1 should be set higher.114 The ping should work well and you will be replied from 192.114 Question No : 310 . 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 192.2.(Topic 7) A network administrator is troubleshooting the OSPF configuration of routers R1 and R2.0. The question said that appropriate interfaces have been configured for NAT inside and NAT outside statements. Based on the information in the graphic. C. This is how to configure the NAT inside and NAT outside. The graphic shows the output of the show ip ospf interface e0 command for routers R1 and R2. The cost on R1 should be set higher. 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.(many-to-one) by using different ports.0. B.

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

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

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

The EIGRP routing protocol is configured. Your company has connected the routers R1. For example.monitor cache. 317 . R2. You are required to troubleshoot and resolve the EIGRP issues between the various routers.(Topic 7) Scenario Refer to the topology. 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 . and R3 with serial links. R2 and R3 are connected to the switches SW1 and SW2. SW1 and SW2 are also connected to the routers R4 and R5. respectively. Use the appropriate show commands to troubleshoot the issues.

318 .

319 .

320 .

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

) 322 .(Topic 7) Refer to the exhibit.5.Answer: A Explanation: Using the “show ip int brief command” on R5 we can see the IP addresses assigned to this router. The network shown in the diagram is experiencing connectivity problems. which we see from the diagram is the link to R2. Question No : 315 . Which of the following will correct the problems? (Choose two.5. Then.5.55 the preferred path is via Serial 1/3.5 and 10.5. using the “show ip route” command on R1 we can see that to reach 10.

They are usually at least 10 times faster than analog modem connections.1.1. Configure the IP address of Host B as 10.2.2 -.D Explanation: The switch 1 is configured with two VLANs: VLAN1 and VLAN2. Configure the IP address of Host A as 10. Configure the gateway on Host A as 10.126 Mask : 255.1.12 Mask : 255.0 Gateway : 10.255. The IP information of member Host A in VLAN1 is as follows: Address : 10.224. Configure the gateway on Host B as 10. 323 .1.2.2.2. D. The layer3 addressing information of Host B should be modified as follows: Address : 10. Configure the masks on both hosts to be 255.1. Mixed Questions Question No : 316 . Answer: B.1.1. Configure the masks on both hosts to be 255.2.0 Gateway : 10.255.A.1 -.1.254 The configuration of sub-interface on router 2 is as follows: Fa0/0.255. B.(Topic 8) What are three characteristics of satellite Internet connections? (Choose three.254/24 VLAN1 Fa0/0.X Mask : 255.255.2.1.254.240.255.1.1.1. B. D. Their upload speed is about 10 percent of their download speed.255.254/24 VLAN2 It is obvious that the configurations of the gateways of members in VLAN2 and the associated network segments are wrong.255. C. They are frequently used by rural users without access to other high-speed connections.1.255.254 The IP information of member Host B in VLAN2 is as follows: Address : 10.255.0 Topic 8.1.) A.2.255.1. F.10. They are usually faster than cable and DSL connections.10.1. C.1.1. E.

host A 192.65.18.254.22.78. They use radio waves to communicate with cellular phone towers.168.C Question No : 317 CORRECT TEXT .78. The requirements are: Host C should be able to use a web browser (HTTP) to access the Finance Web Server.17.18. All passwords have been temporarily set to “cisco”. All access from hosts in the Core or local LAN to the Finance Web Server should be blocked. 324 .4 The Finance Web Server has been assigned an address of 172.22.78. F. The computers in the Hosts LAN have been assigned addresses of 192.146.168.168. Access to the router CLI can be gained by clicking on the appropriate host. You have been tasked to create and apply a numbered access list to a single outbound interface.1 host B 192.3 host D 192.168. This access list can contain no more than three statements that meet these requirements.78. Answer: A.78.209.146.1 – 192. They require a WiMax tower within 30 miles of the user location. The Core connection uses an IP address of 198.168. The Public Web Server in the Server LAN has been assigned an address of 172. All hosts in the Core and on local LAN should be able to access the Public Web Server.(Topic 8) A corporation wants to add security to its network.168.E. Other types of access from host C to the Finance Web Server should be blocked.2 host C 192.78.B.

325 .

326 .

24.34 PM.png 327 .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. use the “show ip int brief” command: Macintosh HD:Users:danielkeller:Desktop:Screen Shot 2015-11-17 at 3. To see which interface this is.

109.109. All access from hosts in the Core or local LAN to the Finance Web Server should be blocked. In the address box type http://172.17 to check if you are allowed to access Finance Web Server or not.17 via HTTP (port 80). our next two instructions are these: Other types of access from host C to the Finance Web Server should be blocked. just click on host C to open its web browser.109.17 Our last instruction is to allow all hosts in the Core and on the local LAN access to the Public Web Server (172. so our first line is this: Corp1(config)#access-list 100 permit tcp host 192.3 to the Finance Web Server 172. blocking all other access to the finance web server: Corp1(config)#access-list 100 deny ip any host 172. repeat to make sure they can reach the public server at 172. we know that the servers are located on the fa0/1 interface.From this. If your configuration is correct then you can access it.22.22.109.17 eq 80 Then. save the configuration Corp1(config-if)#end Corp1#copy running-config startup-config 328 . so we will place our numbered access list here in the outbound direction.168.168125.125. 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 host 172. 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.109.22.22.22.18 any Finally.22.109.109. To verify.22. Click on other hosts (A.18. B and D) and check to make sure you can’t access Finance Web Server from these hosts.18) Corp1(config)#access-list 100 permit ip host 172. Then. Corp1#configure terminal Our access-list needs to allow host C – 192. Finally.

) A. IPv6 stateful autoconfiguration E. Telnet access requires a new password at the first login. no password is required for telnet access.B Question No : 320 .) 329 . DHCP C. Which two statements are true about the loopback address that is configured on RouterB? (Choose two.(Topic 8) Refer to the exhibit. Telnet access is denied. C. D. IPv6 stateless autoconfiguration B.Question No : 318 . What is the result of setting the no login command? A.(Topic 8) Refer to the exhibit. ISATAP tunneling Answer: A. Answer: D Question No : 319 .(Topic 8) Which two features can dynamically assign IPv6 addresses? (Choose two. Telnet access requires a new password. B. NHRP 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.0. Answer: B. -> The loopback interface will be chosen as the router ID of RouterB – 330 . B. It indicates that RouterB should be elected the DR for the LAN. It specifies that the router ID for RouterB should be 10. It decreases the metric for routes that are advertised from RouterB.1.A.+ If a loopback interface is not defined. It ensures that data will be forwarded by RouterB. the highest IP address of all active router’s physical interfaces will be chosen. D. It provides stability for the OSPF process on RouterB. C. E.0.

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

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

[1] Thus. router(config)#ip route 0.0 0.255. router(config-router)#default-information originate D.0.255. 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 (::).(Topic 8) In which two formats can the IPv6 address fd15:0db8:0000:0000:0700:0003:400F:572B be written? (Choose two. eliminating parts of the representation. fd15:0db8::7:3:4F:527B E. router(config-router)#default-information originate always Answer: A Question No : 327 .0. fd15::db8::700:3:400F:527B C. but IETF recommendations suggest the use of lower case letters.255 GigabitEthernet0/1 C.0.0. the example address can be further simplified: 2001:db8:85a3::8a2e:370:7334 333 . fd15:db8:0::700:3:4F:527B D.A. router(config)#ip route 0.) A.E Explanation: An IPv6 address is represented as eight groups of four hexadecimal digits.0 GigabitEthernet0/1 B. The groups are separated by colons (:). An example of an IPv6 address is: 2001:0db8:85a3:0000:0000:8a2e:0370:7334 The hexadecimal digits are case-insensitive. fd15:db8::700:3:400F:572B Answer: D.0. The full representation of eight 4-digit groups may be simplified by several techniques.0. Leading zeroes Leading zeroes in a group may be omitted.0 255.[1] Thus. fd15:0db8:0000:0000:700:3:400F:527B B. each group representing 16 bits (two octets).

Updates are sent to a multicast address by default. distance learning. It burdens the source host without affecting remote hosts.(Topic 8) Which three statements about link-state routing are true? (Choose three. E. 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.B.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. and news. It is bandwidth-intensive. C. and distribution of software. It simultaneously delivers multiple streams of data. Answer: D. It is the most efficient way to deliver data to multiple receivers. Answer: A. B. D. Question No : 330 .(Topic 8) Which two statements about IPv4 multicast traffic are true? (Choose two.C Question No : 329 . D. It uses split horizon.Question No : 328 . B. stock quotes. RIP is a link-state protocol. It uses a minimum amount of network bandwidth. corporate communications.(Topic 8) 334 . OSPF is a link-state protocol. C. Routes are updated when a change in topology occurs. E.) A. Updates are sent to a broadcast address. F. resulting in the most efficient delivery of data to multiple receivers. Applications that take advantage of multicast include video conferencing.) A. IP multicast delivers application source traffic to multiple receivers without burdening the source or the receivers while using a minimum of network bandwidth.

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

This causes data packets that go through the GRE tunnel to be "black holed". RFC 1631 D. These three rules (missing route. Full-duplex interfaces use CSMA/CD logic. 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.) A. This is true even if the other side of the tunnel has not been configured. The symptoms of a duplex mismatch may be intermittent. C. The interface displays a connected (up/up) state even when the duplex settings are mismatched.(Topic 8) What are two reasons that duplex mismatches can be difficult to diagnose? (Choose two. RFC 1918 Answer: A Question No : 334 . NTP C.(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 rules do not cover the case in which the GRE tunneled packets are successfully forwarded. Autonegotiation is disabled. NAT B. Before GRE keepalives were implemented. even though an alternate route that uses PBR or a floating static route via another interface is potentially available. 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. there were only three reasons for a GRE tunnel to shut down: There is no route to the tunnel destination address. The interface that anchors the tunnel source is down. but are lost before they reach the other end of the tunnel. The route to the tunnel destination address is through the tunnel itself. D. Question No : 333 . so mismatches may be disguised by 336 . For example.destination IP address must also be routable. B. 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.

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

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

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

340 . programmatic control of your network elements. Both northbound and southbound APIs allow program control of the network.) A. Only southbound APIs allow program control of the network. and DELETE) with JSON syntax.C Explanation: APIC-EM Northbound InterfaceThe APIC-EM Northbound Interface is the only API that you will need to control your network programmatically.Switch(config-if)#vlan 20 Switch(config-vlan)#switchport access vlan 20 C. Thus you tell the network what you want (i.e.(Topic 8) Which two statements about northbound and southbound APIs are true? (Choose two. Both northbound and southbound API interfaces use a Service Abstraction Layer. interfaces. Only southbound API interfaces use a Service Abstraction Layer. GET. The API is function rich and provides you with an easy-to-use. Only northbound APIs allow program control of the network. Switch(config)#vlan 20 Switch(config)#Interface vlan 20 Switch(config-if)#switchport trunk native vlan 20 D. PUT. Plug and Play (PnP) . which will then be implemented by the APIC-EM Controller through its Southbound Interfaces. your applications will make network policy decisions. 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. The APIC-EM GA release focus’s on the following key customer applications: Intelligent WAN (IWAN) .delivers zero-touch deployment of Cisco Enterprise Network routers. B. F. D. C. Switch(config)#vlan 20 Switch(config)#Interface vlan 20 Switch(config-if)#switchport access vlan 20 E..e.. switches and wireless controllers (including Wireless Access Points). and hosts. the policy) and the controller figures out how to implement that policy for you. 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 . Answer: B. The APIC-EM API is REST based and thus you will discover and control your network using HTTP protocol with HTTP verbs (i. POST. When you use the APIC-EM API.automates the configuration of advanced IWAN features on Cisco 4000 Series Integrated Service Routers. E.

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

(Topic 8) Which command can you enter to display duplicate IP addresses that the DHCP server assigns? A.2.SB8a.12 B. Router(config)#boot bootldr bootflash:c4500-jk9s-mz.C Question No : 347 .bin B. Router> boot flash:c180x-adventerprisek9-mz-124-6T.2.T4. Router(config)#boot flash:c180x-adventerprisek9-mz-124-6T.bin D.0. show ip dhcp binding 10.bin Answer: A. B. Answer: A Question No : 346 .0.B.bin F.(Topic 8) Which command can you execute to set the user inactivity timer to 10 seconds? 342 .) A. show ip dhcp server statistics D. It prevents the correct translation of IP addresses on the inside network.12 Answer: A Question No : 348 . D.12 C. It can cause too many addresses to be assigned to the same interface. Router(config)# boot system flash c4500-p-mz. Router(config)#boot system rom c7301-advipservicesk9-mz.121-20.122-33.124-24.bin E.2.bin C. It can lead to overloaded resources on the router.What is the danger of the permit any entry in a NAT access list? A.(Topic 8) Which three commands can you use to set a router boot image? (Choose three.0. It can disable the overload command. show ip dhcp conflict 10. Router(config)# boot system tftp c7300-js-mz. show ip dhcp database 10.122-23f. C.

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

Router#show interface loopback 0 D. Switch#show vlan id 20 B. Switch#show interface vlan 20 D. ping ipv6 Answer: C Question No : 352 .(Topic 8) Which command can you enter to verify that a 128-bit address is live and responding? A.(Topic 8) After you configure the Loopback0 interface. Router#show ip interface loopback 0 B.0/26 B.0/25 C. telnet C. 172. Switch#show ip interface brief C. Switch#show ip interface vlan 20 Answer: A Question No : 351 .1.16.1. 172.A.16.1. which command can you enter to verify the status of the interface and determine whether fast switching is enabled? A. 172. Router#show run C.5/32? A. traceroute B. Router#show ip interface brief Answer: A Question No : 353 .0/24 344 .16.(Topic 8) What is the correct routing match to reach 172.1. ping D.16.

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

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

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

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

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

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

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

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

Answer: A Question No : 376 . capabilities. The enable secret is in clear text in the configuration.(Topic 8) What is the authoritative source for an address lookup? A.(Topic 8) Which condition indicates that service password-encryption is enabled? A. The local username password is in clear text in the configuration. The LLDP update frequency is a fixed value. The enable secret is encrypted in the configuration. It is configured in global configuration mode. LLDP performs functions similar to several proprietary protocols. the operating system cache 353 . a recursive DNS search B. D. principally wired Ethernet The protocol is formally referred to by the IEEE as Station and Media Access Control Connectivity Discovery specified in IEEE 802. It runs over the transport layer. C. and Microsoft's Link Layer Topology Discovery (LLTD). Nortel Discovery Protocol (also known as SONMP). D. Extreme Discovery Protocol.3-2012 section 6 clause 79. and neighbors on an IEEE 802 local area network. 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. It is a Cisco proprietary protocol. C. Question No : 375 .Which statement about LLDP is true? A. The local username password is encrypted in the configuration. B. B. so devices that use different Network so Answer D is wrong LLDP or Link Layer Discovery Protocol is vendor neutral. Answer: B Explanation: LLDP runs over the Data Link Layer. such as the Cisco Discovery Protocol (CDP). Foundry Discovery Protocol (FDP).1AB[2] and IEEE 802.

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

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

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

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

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

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

inter-VLAN routing using a Layer 2 switch C. inter-VLAN routing using a Layer 3 switch B. aux password 360 . CARP Answer: A Question No : 393 . how many broadcast domains are present on the router? A. intra-VLAN routing using a Layer 3 switch Answer: A Question No : 394 .) A. tty password B. enable secret password C. intra-VLAN routing using router on a stick D.(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. 1 B.(Topic 8) If a router has four interfaces and each interface is connected to four switches. vty password D.(Topic 8) Which technology can enable multiple VLANs to communicate with one another? A. 4 D. 8 Answer: C Question No : 395 . GLBP D. 2 C.C.

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

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

show ip interface brief B.0. RSTP C. Mono Spanning Tree Answer: A Question No : 400 .0.0.255. MSTP B.(Topic 8) Which command can you enter to route all traffic that is destined for 192.0 255.0 GigabitEthernet0/1 Answer: A 363 . router(config)#ip route 0.0 0.0.255.168.0 255.0.0 GigabitEthernet0/1 D.0/20 to a specific interface? A.255.A. router(config)#ip route 192.168. router(config)#ip route 192. show interfaces D.0 GigabitEthernet0/1 B.0.0 255.(Topic 8) Which command can you enter to determine whether a switch is operating in trunking mode? A.240.0.255. router(config)#ip route 0.255.168. show vlan C. show interface switchport Answer: A Question No : 401 . PVST+ D.0 GigabitEthernet0/1 C.0.0.