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

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

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

Answer: A Explanation: FTP belongs to Application layer and it is also the highest layer of the OSI model.(Topic 1) Refer to the exhibit. Question No : 11 DRAG DROP . Answer: 11 . 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.

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

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

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

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

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

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

Exhibit E F. Exhibit D E.168.1. Host A sends a broadcast frame asking the MAC address of 192.A. This information (IP and MAC address of the default gateway) is saved in its ARP cache for later use.168. Exhibit F Answer: A Explanation: Host A knows host B is in another network so it will send the pings to its default gateway 192. Exhibit B C.1.(Topic 1) 18 . Exhibit C D.6.6. Exhibit A B. Question No : 19 .

128 the hosts vary from x. each interface does not require an IP address.254.x. each interface does not require an IP address. D.255. must be a Layer 3 device for the PCs to communicate with each other.255.0.0.255.127 & x.254.x.) A. must be a Layer 2 device for the PCs to communicate with each other. With a network wide mask of 255.Refer to the exhibit.x.128. With a network wide mask of 255.x. so the IP Addresses of 2 hosts fall in different subnets so each interface needs an IP an address so that they can communicate each other.255.255. each interface does require an IP address on a unique IP subnet.0.E Explanation: If Subnet Mask is 255. Answer: B. B. If Subnet Mask is 255. 19 .0 the 2 specified hosts fall in different subnets so they need a Layer 3 device to communicate.x. Which three statements correctly describe Network Device A? (Choose three.255.x. C.255.255. With a network wide mask of 255. If Subnet Mask is 255.x.x.128x. With a network wide mask of 255.255.255.255. E.255.255.0 .255.D.128.0 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.x. With a network wide mask of 255.255.

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

If more than one device transmits simultaneously.0c07. B. After the message is sent. Router1 will strip off the source IP address and replace it with the IP address 192.4320.1. When there is no traffic detected. D.40. the device continues to listen for traffic or collisions on the LAN.168. C.Answer: C. Router1 will strip off the destination IP address and replace it with the IP address of 21 .0c36.6965.(Topic 1) Refer to the exhibit: What will Router1 do when it receives the data frame shown? (Choose three. Router1 will strip off the source MAC address and replace it with the MAC address 0000. it will wait for a specified amount of time before attempting to transmit.) A.D Explanation: Ethernet network is a shared environment so all devices have the right to access to the medium. the signals collide and cannot reach the destination. While this transmission is occurring. If a device detects another device is sending. a device will transmit its message. Router1 will strip off the destination MAC address and replace it with the MAC address 0000. Question No : 22 . the device returns to its default listening mode.

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

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

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

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

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

(Topic 1) Drag the cable type on the left to the purpose for which it is best suited on the right.7 Question No : 27 DRAG DROP .21.0c89.250IP 172.16.34.Answer: Explanation: Source Mac AddressDestination Mac AddressSource IP addressDestination MAC address MAC 0000.3333MAC 0000.) Answer: 27 .9999 IP 172. (Not all options are used.0c89.16.

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

Which set of commands is required to accomplish this task? A. SwitchB(config)# ip route 192.252 255.8.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 E.168.168. SwitchB(config)# ip default-network 192.8. SwitchB(config)# ip default-gateway 192.254 255.168.252 255.8.8.8.168.255.255.168.168.255.0 SwitchB(config-if)# no shutdown C.255. SwitchB(config)# interface vlan 1 SwitchB(config-if)# ip address 192.0 SwitchB(config-if)# no shutdown D.252 255.255.168.0 SwitchB(config-if)# no shutdown Answer: C Explanation: To remote access to SwitchB.254 255.254 SwitchB(config)# interface vlan 1 SwitchB(config-if)# ip address 192.8.8.255.255.252 255.254 SwitchB(config)# interface vlan 1 SwitchB(config-if)# ip address 192.255.168.168.255.255.0 SwitchB(config-if)# ip default-gateway 192.255. SwitchB(config)# interface FastEthernet 0/1 SwitchB(config-if)# ip address 192.255.8.252 255. it must have a management IP address on a VLAN on that 29 .255.8.255.0 SwitchB(config)# interface FastEthernet 0/1 SwitchB(config-if)# ip address 192.0 SwitchB(config-if)# no shutdown B.

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

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

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

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

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. 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. The higher the bandwidth on a link. Gi0/2.B. “cost” is calculated based on bandwidth of the link. In general. Because SwitchC is the root bridge so the 2 ports nearest SwitchC on SwitchA (Fa0/1) and SwitchD (Gi0/2) will be root ports. root D. SwitchD. Now let’s have a look at the topology again 34 . root Answer: A. SwitchB. Gi0/2. 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. SwitchB. Fa0/2.C.F Explanation: The question says “no other configuration changes have been made” so we can understand these switches have the same bridge priority. SwitchC. root F. designated E. 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. the lower the value of its cost. Gi0/1. The receiving switch will add its local port cost value to the cost in the BPDU. 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.

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

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

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

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

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.. They have the same priority 32768.0000. the priority is compared first. The Bridge priority default is 32768 and can only be configured in multiples of 4096(Spanning tree uses the 12 bits extended system ID).2222) both have a priority of 32768 then switch A will be selected as the root bridge.will become the target of being the root. Switch3 with a smaller MAC address will provide a designated port for printers.(Topic 2) Which switch would STP choose to become the root bridge in the selection process? A. as if looking at a real number anything less than 32768. for example. Each bridge has a configurable priority number and a MAC Address.0000.. 39 . If two bridges have equal priority then the MAC addresses are compared. the bridge ID contains both numbers combined together . if switches A (MAC=0200.0000. Question No : 38 . Compare their MAC addresses. 32768: 11-22-33-44-55-66 would be the bridge because it has a lower priority and MAC address.0200.1111). In this case. 32768: 11-22-33-44-55-66 B. Question No : 37 . 32769: 11-22-33-44-55-65 D. To compare two bridge IDs.Bridge priority + MAC (32768.1111) and B (MAC=0200.(Topic 2) Refer to the exhibit. 32768: 22-33-44-55-66-77 C.Printers are connected by hubs. Decide the switch that provides the spanning-tree designated port role between Switch3 and Switch4.

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

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

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

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

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

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

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

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

1Q protocol? (Choose two. VTP B. mainly stipulates the realization of the VLAN. Generally. 802. D. most network engineers prefer to use 802.) A. It is a trunking protocol capable of carrying untagged frames. 802. the industry standard 802. It modifies the 802. It is a Layer 2 messaging protocol which maintains VLAN configurations across networks.1Q protocol.Question No : 48 .(Topic 2) Which two of these are characteristics of the 802.3u Answer: B.D Explanation: Cisco switches can use two different encapsulation types for trunks. C.1Q is a standardized relay method that inserts 4 bytes field into the original Ethernet frame and re-calculate the FCS. E. Non-marked frame carries no VLAN identification information.3 frame header.(Topic 2) Which two link protocols are used to carry multiple VLANs over a single link? (Choose two. 802. Question No : 49 . Answer: B.1Q frame relay supports two types of frame: marked and non-marked.) A. ISL E. It includes an 8-bit field which specifies the priority of a frame. 802.1q or the Cisco proprietary ISL.E Explanation: 802.1q C. or Virtual Bridged Local Area Networks protocol. It is used exclusively for tagging VLAN frames and does not address network reconvergence following switched network topology changes. and thus requires that the FCS be recomputed. IGP D. B.1q since it is standards based and will interoperate with other vendors. 48 .

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

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

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

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

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

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

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

destination port address F. source MAC address B. the frame is broadcast on all interfaces except the one it was received on. destination IP address E. destination MAC address Answer: F Explanation: When a frame is received. possible on the same physical segment.a VLAN. source IP address C. switched virtual networks avoid wasting bandwidth. 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. The technology logically segments the network into separate Layer 2 broadcast domains whereby packets are switched between ports designated to be within the same VLAN. and no users outside that VLAN can communicate with them. If the address is unknown. 56 .(Topic 2) What does a Layer 2 switch use to decide where to forward a received frame? A. Question No : 58 . Question No : 59 .(Topic 2) Refer to the exhibit. 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. source switch port D.

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

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

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

interface FastEthernet 0/3 60 . What set of commands was configured on interface Fa0/3 to produce the given output? A.SW3#show interface trunk Port Mode Encapsulation Status Native vlan Fa0/19 auto n-802.1q trunking 1 Fa0/21 auto n-802.1q trunking 1 Fa0/22 auto n-802.1q trunking 1 Fa0/20 auto n-802.(Topic 2) Refer to the exhibit. On Access Mode VLAN: 1 (default) Trunking Native Mode VLAN: 1 (default) Voice VLAN: none Question No : 63 .1q trunking 1 Port Vlans allowed on trunk Fa0/19 1-4094 Fa0/20 1-4094 Fa0/21 1-4094 Fa0/22 1-4094 SW1#show interface fast 0/2 switchport Name: Fa0/2 Switchport: Enabled Administrative Mode: dynamic desirable Operational Mode: down Administrative Trunking Encapsulation: dot1q Negotiation of TrunkinG.

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

D.(Topic 2) Refer to the exhibit. 62 . Check the trunk encapsulation mode for SwitchA's fa0/2 port. 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. what should the network administrator's next action be? A. Question No : 65 . Check the trunk encapsulation mode for SwitchC's fa0/1 port. C.Given this output for SwitchC. Check the duplex mode for SwitchC's fa0/1 port. B. A mismatched trunk encapsulation would not result in input errors and CRC errors. Check the duplex mode for SwitchA's fa0/2 port.

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

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

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

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

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

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

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

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

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

Native VLAN is the default VLAN configuration of port.1Q native VLAN frames are untagged by default. point-to-point connectivity. B.) A. Note for the 802. E.E Explanation: By default. If the Native VLAN in 802. 802.1Q trunk defined Native VLAN in order to forward unmarked frame. The 802.C. the same Native VLAN configuration is required on both sides of the link.1Q trunks require full-duplex. 802.(Topic 2) Which three of these statements regarding 802.(Topic 2) Refer to the exhibit.1Q trunk ports on same trunk link is properly configured. 802.D. Question No : 78 . 802.1Q trunking are correct? (Choose three. D. 802.1Q trunk link transmits VLAN information through Ethernet. C. Answer: A. 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 3.1Q trunks should have native VLANs that are the same at both ends. Receiver switches will transmit all unmarked packets to Native VLAN. it could lead to layer 2 loops. Switches can forward Layer 2 frame from Native VLAN on unmarked trunks port.1Q trunk ports between two devices. 72 . 802.1Q trunks can use 10 Mb/s Ethernet interfaces. The command is accepted and you must configure the VLAN manually. Question No : 79 .1Q trunking ports can also be secure ports.

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

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

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

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

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

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

596d. Answer: D Explanation: Only non-root bridge can have root port. not PVST ->. 0017. From the output we learn this switch is running Rapid STP. SwitchA has one Root port and 1 Alternative port so it is not the root bridge. Question No : 85 . D. All of the interface roles of the root bridge are designated. not of the root bridge.596d.(Topic 2) 79 . C.2a00 ->. SwitchA is not the root bridge. The MAC address of the root bridge is 0017. because not all of the interface roles are designated. B.1580 is the MAC address of this switch. Fa0/11 is the root port so we can confirm this switch is not the root bridge ->.596d. The Fa0/11 role confirms that SwitchA is the root bridge for VLAN 20.1580. VLAN 20 is running the Per VLAN Spanning Tree Protocol. Which statement is true? A.Refer to the exhibit. The MAC address of the root bridge is 0017.

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

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

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

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

11. incompatible IP address B. The Atlanta router is known to have the correct configuration.2. identify the fault on the Brevard router that is causing the lack of connectivity. to decrease latency by increasing bandwidth 84 .) A. These are from different network.1 And Interface Serial 1 of Router Brevard has 192. IPCP closed Answer: D Explanation: Because Interface Serial 0 of Atlanta Router has 192. link reliability too low F. incompatible encapsulation E.168. Question No : 91 . incorrect subnet mask D. A.168. but they are unable to communicate.Two routers named Atlanta and Brevard are connected via their serial interfaces as illustrated. insufficient bandwidth C.(Topic 3) Why do large OSPF networks use a hierarchical design? (Choose three.10. Given the partial configurations.

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

5. According to the routing table.2 C.1.1.5.64/27 subnets but the “longest prefix match” algorithm will choose the most specific subnet mask -> the prefix “/29 will be chosen to route the packet.1.64/29 & 10.2 B.3.1. where will the router send a packet destined for 10.(Topic 3) Refer to the exhibit.1.2.1. 86 .1.3 D. 10.1.65? A. 10.3 ->.Question No : 93 .65 belongs to 10.1.64/28.5.4 Answer: C Explanation: The destination IP address 10.1. 10.3.5.1.4. Therefore the next-hop should be 10. 10.5. 10.

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

B. so another file as large as 4MB can be loaded in addition to the original file. It configures the virtual terminal lines with the password 030752180500.8 are being used already. It tells the router or switch to try to establish an SSh connection first and if that fails to use Telnet. 88 . What is the effect of the configuration that is shown? A. 5 MB D. It configures SSH globally for all logins.The technician wants to upload a new IOS in the router while keeping the existing IOS. C. 3 MB B. D. but 3.(Topic 3) Refer to the exhibit. E. Question No : 96 . It allows seven failed login attempts before the VTY lines are temporarily shutdown. 7 MB E. It configures a Cisco network device to use the SSH protocol on incoming communications via the virtual terminal ports. 8 MB Answer: B Explanation: In this example. there are a total of 8 MB. What is the maximum size of an IOS file that could be loaded if the original IOS is also kept in flash? A. 4 MB C.

(Topic 3) Refer to the exhibit.0 0. The speed of all serial links is E1 and the speed of all Ethernet links is 100 Mb/s.0.0.255.1 C.252 128.0.0 255. add the “transport input ssh” command under the lines to limit the router to SSH connections only. Straight (non-SSH) Telnets are refused.107.com/warp/public/707/ssh.255.1. A static route will be established on the Manchester router to direct traffic toward the Internet over the most direct path available.0.0 128.0.1 89 .shtml Question No : 97 .16.2 B. ip route 0. ip route 0.107.255.0 172.0 255.100. Reference: www. Communication between the client and server is encrypted in both SSH version 1 and SSH version 2.Answer: D Explanation: Secure Shell (SSH) is a protocol which provides a secure remote access connection to network devices.0. If you want to prevent non-SSH connections.1. ip route 0.0.255. What configuration on the Manchester router will establish a route toward the Internet for traffic that originates from workstations on the Manchester LAN? A.cisco.0.

2 F. 90 . administrative distance C.16. when a dynamic protocol is also being used? A. You should generally only use default routing on stub networks—those with only one exit path out of the network. hop count B.255 172.0.0 255.1 E.0 0.0.16.2 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.0 172.255.0.0.0. all traffic towards Internet that originates from workstations should forward to Router R1.0.0. you need to increase the AD of the static route so that it is higher than the dynamic routing protocol.0 0. ip route 0.0.0 172. ip route 0. Syntax for default route is: ip route <Remote_Network> <Netmask> <Next_Hop_Address>. According to exhibit.(Topic 3) Which parameter would you tune to affect the selection of a static route as a backup.255. link cost Answer: B Explanation: By default the administrative distance of a static route is 1.0.100. link delay E.0. meaning it will be preferred over all dynamic routing protocols. ip route 0.D.100. Question No : 98 . If you want to have the dynamic routing protocol used and have the static route be used only as a backup.16.100. link bandwidth D.

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

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

255.0 192. 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 >.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. link-state routing protocol utilizes event-triggered updates (only sends update when a change occurs) ->.2 Local(config)# ip route 10.1.0.0 255.3.C. Question No : 103 DRAG DROP .0 255.1.0.255.A.2.1.1 Local(config)# ip route 10.168.3 Drag each destination IP address on the left to its correct next hop address on the right. 93 .0 0.168. utilizes frequent periodic updates Answer: A. exchanges routing tables with neighbors C.0.0 192. provides common view of entire topology B. calculates shortest path D.168. Unlike Distance vector routing protocol (which utilizes frequent periodic updates).0 192.0.0.255.0.(Topic 3) Routing has been configured on the local router with these commands: Local(config)# ip route 0. utilizes event-triggered updates E.0.

Answer: Explanation: 94 .

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

168.10. D.10.10.10. C.10.192/26 LAN be forwarded to 192.Based on the exhibited routing table.168. The router will forward packets from R3 to R2 to R1 AND from R3 to R1.9 &192. The router will forward packets from R3 to R2 to R1. Question No : 105 . B.168.168.168.0/30 is learned via 2 equal-cost paths (192. The router will forward packets from R3 to R1 to R2. Answer: C Explanation: From the routing table we learn that network 192. The router will forward packets from R3 to R1.5) -> traffic to this network will be load-balancing.1? A. how will packets from a host within the 192.(Topic 3) 96 .

1 D.168. if the router ID has not been manually set.16. routing tables received from other link-state routers F.) A.1.5. 10. beacons received on point-to-point links E.3 Answer: C Explanation: The highest IP address of all loopback interfaces will be chosen -> Loopback 0 will be chosen as the router ID.1.5. Given the output for this command. TTL packets from designated routers Answer: A.154.1 C. LSAs from other routers D.Refer to the exhibit. Question No : 106 .(Topic 3) What information does a router running a link-state protocol use to build and maintain its topological database? (Choose two. what router ID will OSPF use for this router? A.2 B. SAP messages sent by other routers C. hello packets B.154.C Explanation: 97 . 172. 10. 192.

asp?p=26919&seqNum=3 Question No : 108 .255. As the term flooding implies. network 255.0 area 0 D. Question No : 107 .255. when configured.0.255.255. will include all interfaces into area 0? A.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 0.255.255) what the IP address is.255.255 area 0 Reference: http://www. a Hello protocol is used for this step. each received LSA is copied and forwarded to every neighbor except the one that sent the LSA. In keeping with the friendly neighbor terminology.0.0. network 0.0.0.0.0.255 area 0 B. but if an IP address is enabled on any interface.Neighbor discovery is the first step in getting a link state environment up and running.com/articles/article.255.0 area 0 C.0.(Topic 3) 98 .255 area 0 dictates that you do not care (255.0.0 255. the routers may begin sending out LSAs. In turn. the advertisements are sent to every neighbor.(Topic 3) What OSPF command.ciscopress. place it in area 0. network 0.0 0. Example 3-1 Configuring OSPF in a Single Area router ospf 1 network 0.255. After the adjacencies are established.255.0 255.0. The network command network 0.255.255 0.0 255. The protocol will define a Hello packet format and a procedure for exchanging the packets and processing the information the packets contain.0.

Refer to the exhibit. Flash memory on Cisco routers can contain only a single IOS image. it must be the only IOS image in flash. The router cannot verify that the Cisco IOS image currently in flash is valid.2.167/ c1600-k8sy-mz.l23-16a. C. Why is flash memory erased prior to upgrading the IOS image from the TFTP server? A.bin (Not enough space on device) Question No : 109 DRAG DROP .(Topic 3) 99 .168. the flash has enough space to copy a new IOS without deleting the current one. In order for the router to use the new image as the default. Answer: C Explanation: During the copy process. the router asked “Erasing flash before copying? [confirm]” and the administrator confirmed (by pressing Enter) so the flash was deleted. B. D. Erasing current flash content is requested during the copy dialog. Note: In this case. The current IOS is deleted just because the administrator wants to do so. If the flash does not have enough space you will see an error message like this: %Error copying tftp://192.

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

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

Explanation: Since all the same router (C-router) is the default gateway for all three VLANs.2.2.1.1 C. 172. The C-router will have knowledge of all three networks since they will appear as directly connected in the routing table.1. If more than one loopback interfaces are configured. 192.1 B. 1. no routing protocols need to be configured. all traffic destined to a different VLA will be sent to the C-router.16.1.(Topic 3) Refer to the exhibit.1 D. Question No : 112 . what value will OSPF use as its router ID? A.168. Since the C-router already knows how to get to all three networks. the router will compare the IP addresses of each of 102 . 2.1.2 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. If the router Cisco returns the given output and has not had its router ID set manually.

120) (Process ID 1) Next.the interfaces and choose the highest IP address from the loopbacks. Answer: A.11110. Question No : 114 .0. It is created using the MAC Address of the loopback interface.) A. C. B. It identifies the source of a Type 1 LSA.0. Also the router will chose the highest loopback interface as its OSPF router ID (if available).1131480x8000022C0x0043993 10.0.0. E. The router automatically chooses the IP address of a loopback as the OSPF Router ID. It should be the same on all routers in an OSPF routing instance.0. By default.12010.0.1116000x8000023A 0x0092B31 10.11210.0. the lowest IP address on the router becomes the OSPF Router ID.0.0. Question No : 113 .0. which two commands set the gateway of last resort to the default gateway? (Choose two.0.0.11310. D. who are the other routers in our area? Router Link States (Area 1) Link IDADV RouterAgeSeq#ChecksumLink count 10.) 103 .0.0.11212460x80000234 0x009CAC1 10.0.(Topic 3) If IP routing is enabled.0.D Explanation: r120#show ip ospf data OSPF Router with ID (10.(Topic 3) Which two statements about the OSPF Router ID are true? (Choose two.0.0.1201520x800002400x0046CB1 We can see OSPF Router ID will be used as source of Type 1 LSA.

0 172.16.0 (next hop)” commands can be used to set the default gateway in a Cisco router.0.0.16.0 172. ip route 172.A.0 0.0 0.0.0 D.0.16.2.0.0.1 Answer: C.0 0.E Explanation: Both the “ip default-network” and “ip route 0. ip default-network 0.2.0.2.0.0.0.0 B.0 0.0 C. ip default-gateway 0.0.0.0.0. show protocols B.0.1 E. the full command is “show processes”) command gives us lots of information about each process but in fact it is not easy to read. show version Answer: B Explanation: The “show process” (in fact. ip route 0.0. Question No : 115 .1 0. show system D. ip default-route 0.0.(Topic 3) Which command displays CPU utilization? A.0.0.0. show process C. 104 . Below shows the output of this command (some next pages are omitted).

and 72 hours are clearly shown: 105 . 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.

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

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

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

1.1. Configure a static default route on London with a next hop of 10.0.1. C.1. Configure a static route on London to direct all traffic destined for 172.0/22 to 10. E. Question No : 120 DRAG DROP . 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. F.1. Configure a dynamic routing protocol on London to advertise summarized routes to Manchester.16. Configure a dynamic routing protocol on Manchester to advertise a default route to the London router.The network administrator must establish a route by which London workstations can forward traffic to the Manchester workstations. What is the simplest way to accomplish this? A. B.2. Configure Manchester to advertise a static default route to London.(Topic 3) 109 . Configure a dynamic routing protocol on London to advertise all routes to Manchester.

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

Distance means how far and Vector means in which direction. The network administrator requires easy configuration options and minimal routing protocol traffic. In distance vector routing protocols.) A.0.(Topic 3) Refer to the exhibit. B. a static route on InternetRouter to direct traffic that is destined for 172.16. C. E.0/16 to CentralRouter. The routing updates proceed step by step from router to router. a dynamic routing protocol on CentralRouter to advertise summarized routes to InternetRouter. a dynamic routing protocol on InternetRouter to advertise summarized routes to CentralRouter. D. a dynamic routing protocol on InternetRouter to advertise all routes to CentralRouter. Question No : 122 . Distance Vector routing protocols pass periodic copies of routing table to neighbor routers and accumulate distance vectors. routers discover the best path to destination from each neighbor. a dynamic routing protocol on CentralRouter to advertise all routes to InternetRouter. 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. 111 .

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

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

D.168. Switch1(config)# interface fa0/1 Switch1(config-if)# switchport mode trunk Answer: C Explanation: Since we know hosts can reach the router through the switch. It is locally significant and must be the same throughout an area. etc. Switch1(config)# interface fa0/1 Switch1(config-if)# duplex full Switch1(config-if)# speed 100 E. C. Switch1(config)# ip default-gateway 192. Switch1(config)# interface fa0/1 Switch1(config-if)# ip address 192.535. It is globally significant and is used to represent the AS number. 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. the ip default-gateway command must be used.255.24.3 255.(Topic 3) Which statement describes the process ID that is used to run OSPF on a router? A. are good. B. we know that connectivity. However.0 C. The numbers you can use are from 1 to 65. or each router can have a different number-it just doesn't matter. Question No : 125 . Speed.2 billion. duplex.Given the information in the graphic and assuming that the router and Switch2 are configured properly. 114 . Don't get this confused with area numbers.24.168. which of the following commands should be issued on Switch1 to correct this problem? A.255. which can be from 0 to 4. It is locally significant and is used to identify an instance of the OSPF database.1 D. It is globally significant and is used to identify OSPF stub areas. for the switch itself to reach networks outside the local one. 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 running-config D. 115 .(Topic 3) Which command reveals the last method used to powercycle a router? A. show reload B. show boot C.

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

116

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

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

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

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

118

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

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

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

119

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

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

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

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

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

A network associate has configured OSPF with the command:

121

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

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

122

we need a wildcard in the “network” statement.1. The London router is a Cisco 2610. Question No : 134 . not a subnet mask.1.(Topic 3) Refer to the exhibit. We also need to assgin an area to this process ->.) A. The two exhibited devices are the only Cisco devices on the network. The Manchester serial address is 10.1.E Explanation: 123 .255. The serial network between the two devices has a mask of 255. Given the output that is shown.2. B.255. F. Answer: A. the ranges from 1 to 65535 so o is an invalid number -> but To configure OSPF. E.1.C.In the router ospf command. The CDP information was sent by port Serial0/0 of the London router. what three statements are true of these devices? (Choose three.252.1. C. D. The Manchester router is a Cisco 2610. The CDP information was received on port Serial0/0 of the Manchester router. The Manchester serial address is 10.

1.com/RouterOnAStickCCNACertificationExamTutorial. and “Port ID (outgoing port)” refers to the port on the neighbor router. Question No : 135 . Therefore there are only 2 available hosts in this network (22 – 2 = 2). one physical interface for each subinterface B. in this case it is the port of Manchester router.1.255. Please notice that “Interface” refers to the local port on the local router. A short. So we can deduce the ip address (of the serial interface) of Manchester router is 10.252.) A.1 ->. but they are unable to communicate with hosts on different VLANs.1.1. a management domain for each subinterface D.2 and the question stated that the subnet mask of the network between two routers is 255. subinterface encapsulation identifiers that match VLAN tags E.(Topic 3) On a corporate network.255.D. hosts on the same VLAN can communicate with each other. subinterface numbering that matches VLAN tags Answer: B. as shown in the output ->.htm Question No : 136 . one IP network or subnetwork for each subinterface C. Maybe the most difficult choice of this question is the answer E or F.From the output. well written article on this operation can be found here: http://www.thebryantadvantage. we learn that the IP address of the neighbor router is 10. one subinterface per VLAN F.(Topic 3) Which three elements must be used when you configure a router interface for VLAN trunking? (Choose three. The platform of the neighbor router is cisco 2610.E Explanation: This scenario is commonly called a router on a stick. What is needed to allow communication between the VLANs? 124 .

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

Run boot system commands in order they appear in startup-config to locate the IOS b.C Explanation: The loading sequence of CISCO IOS is as follows: Booting up the router and locating the Cisco IOS 1. C. Answer: A. E. POST (power on self-test) 2. 126 . Startup-config filE. Bootstrap code executed 3. Router1 has specific boot system commands that instruct it to load IOS from a TFTP server. Cisco routers will first attempt to load an image from TFTP for management purposes. D. B. [If boot system commands fail. Router1 cannot locate a valid IOS image in flash memory. use default fallback sequence to locate the IOS (Flash. Check for boot system commands (NVRAM) If boot system commands in startup-config a. Check Configuration Register value (NVRAM) which can be modified using the configregister command 0 = ROM Monitor mode 1 = ROM IOS 2 .15 = startup-config in NVRAM 4. Router1 is acting as a TFTP server for other routers.) A.For what two reasons has the router loaded its IOS image from the location that is shown? (Choose two. Router1 defaulted to ROMMON mode and loaded the IOS image from a TFTP server.

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

16 255. The path of the packets will be R3 to R2 to R1.255. Answer: D Explanation: Host on the LAN attached to router R1 belongs to 192.168.25.255.255.A. The path of the packets will be both R3 to R2 to R1 AND R3 to R1.25.255. 192.255. 192.255.0 255.255.25.168.168.255. Which address and mask combination represents a summary of the routes learned by EIGRP? A.28 255. 192.255.10.240 D.10. 192.10.168. The path of the packets will be R3 to R1 to R2.240 B.168.255.252 C.25.10.168.9. which is an IP address in 192. 192.255.25.252 E.25.28 255. 192. D.168.64/26 subnet.168. The path of the packets will be R3 to R1.16 255.(Topic 3) Refer to the exhibit.168.168.240 F.8/30 network (the network between R1 & R3) -> packets destined for 192. Question No : 139 .0 255.252 Answer: C 128 .64 will be routed from R3 -> R1 -> LAN on R1. C. B.255. From the output of the routing table of R3 we learn this network can be reach via 192.

240.16 + 192. The binary version of 16 is 10000.25.(Topic 3) A router has learned three possible routes that could be used to reach a destination network. the RIPv2 route D.255.255. the best answer should be 192.168.25.25.20 + 192. the EIGRP route C.240. The last is from RIPv2 and has a metric of 4. EIGRP learned 4 routes and we need to find out the summary of them: + 192. The binary version of 24 is 11000. So.255.255. The mask is 255. The subnet mask is /28.1111 1111.Explanation: The binary version of 20 is 10100.25.1111 1111. the OSPF route B.25.28 -> The increment should bE.168.255. Therefore the subnet mask is /28 (=1111 1111.11110000) = 255. Which route or routes will the router install in the routing table? A. The binary version of 28 is 11100.240. all three routes E.255.168. 28 – 16 = 12 but 12 is not an exponentiation of 2 so we must choose 16 (24). One route is from EIGRP and has a composite metric of 20514560.24 + 192. Another route is from OSPF with a metric of 782.168.168. the OSPF and RIPv2 routes Answer: B Explanation: When one route is advertised by more than one routing protocol. Note: From the output above. the router will choose to 129 .16 255. Question No : 140 .

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

the security of device access is improved. B. console.17.22. Only passwords configured after the command has been entered will be encrypted.5. 131 . issued the show ip route command. C. Only the enable secret password will be encrypted.(Topic 3) Users on the 172. Answer: E Explanation: Enable vty. Only the enable password will be encrypted. It will encrypt all current and future passwords.0 network cannot reach the server located on the 172. It will encrypt the secret password and remove the enable secret password from the configuration. As a result. Question No : 143 . IP routing is not enabled. D. AUX passwords are configured on the Cisco device.31. The network has not fully converged.What is the effect of using the service password-encryption command? A. The network administrator connected to router Coffee via the console port. Use the show run command to show most passwords in clear text. B. If the service password-encryption is used. all the passwords are encrypted. what is the cause of the failure? A.0 network. E. Based on the output of the show ip route command and the topology shown in the graphic. and was able to ping the server.

F. Answer: B.0 network. The correct IP address will be 172.(Topic 3) What are two benefits of using a single OSPF area network design? (Choose two. It removes the need for virtual links.0. B.2 to reach server located on 172.22. It reduces the number of required OSPF neighbor adjacencies. It increases LSA response times.18. The FastEthernet interface on Coffee is disabled.) A. 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.0.19. It reduces the types of LSAs that are generated. E. D. The neighbor relationship table is not correctly updated. C.2.5. E. D. IP route 0. Answer: C Explanation: The default route or the static route was configured with incorrect next-hop ip address 172.22. The routing table on Coffee has not updated.31. then many of these LSA types (Summary ASBR LSA.C. It is less CPU intensive for routers in the single area.18.0 0.0 172. 132 .2 Question No : 144 .22.C Explanation: OSPF uses a LSDB (link state database) and fills this with LSAs (link state advertisement).0. A static route is configured incorrectly.0.

external LSA. You can also use virtual links to connect two parts of a partitioned backbone through a nonbackbone area. NVRAM C.(Topic 3) Which two locations can be configured as a source for the IOS image in the boot system command? (Choose two. RAM B. However. TFTP server F. + TFTP server 3. In some cases. known as a transit area. The area through which you configure the virtual link. + 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. Question No : 145 . if all locations are in a single OSPF area this is not needed.) A. + Flash (the default location) 2. Telnet server Answer: C. flash memory D. must have full routing information. (Please read the explanation of Question 4 for more information) Question No : 146 .E Explanation: The following locations can be configured as a source for the IOS image: 1. you can use a virtual link to connect to the backbone through a non-backbone area. where this is not possible. HTTP server E. etc) will not be used and will not be generated by any router. 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).(Topic 3) 133 .

0 /24 to area 0? A.1.10.1.0.1. a static route to network 192. a RIP update for network 192. router ospf 1 network 10.1.0/24 D.(Topic 3) What command sequence will configure a router to run OSPF and add network 10. Question No : 147 .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. First.0. meaning the most specific route.1.1. an OSPF update for network 192.255 area 0 E.168.168. What will the router consider the most reliable information about the path to that network? A.10.1.1.255.0.10.10. it will choose the best one based on a couple of things.1.0 0.10.255 area 0 D.0. So.0.0. a static route to network 192. router ospf network 10. router ospf area 0 network 10.10.255.0.0/16 E.168. a directly connected interface with an address of 192.1. router ospf network 10.254/24 B.1.255.0. a default route with a next hop address of 192.255 Answer: C 134 .168.0 area 0 F.0/24 from multiple sources. from all the /24 routes it will choose the one with the lowest administrative distance.0 0.168. in this case the /24 routes will be chosen over the /16 routes.0 255.255 C.0.0 area 0 B.0/24 C.1. router ospf area 0 network 10. router ospf 1 network 10.0 0.0 0. Next.255.1. it will choose the route that has the longest match.168.A router receives information about network 192. Directly connected routes have an AD of 1 so this will be the route chosen.1 F.168.1.0 255.

Step 5 End Example: Device(config-router)# end 135 . Step 3 router ospf process-id Example: Device(config)# router ospf 109 Enables OSPF routing and enters router configuration mode. network ip-address wildcard-mask area area-id 5.0. Step 4 Network ip-address wildcard-mask area area-id Example: Device(config-router)# network 192. Step 2 Configure terminal Example: Device# configure terminal Enters global configuration mode.Explanation: Enabling OSPF SUMMARY STEPS 1.0.3 area 0 Defines an interface on which OSPF runs and defines the area ID for that interface. end DETAILED STEPS Command or Action Purpose Step 1 Enable Example: Device> enable Enables privileged EXEC mode. router ospf process-id 4. configure terminal 3. Enter your password if prompted.129.16 0.168. enable 2.

0. 136 .0. service password-encryption line vty 1 login password cisco D.cisco. Reference: http://www.Exits router configuration mode and returns to privileged EXEC mode. enable password secret line vty 0 login password cisco C.168.1. 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.(Topic 3) A network administrator needs to allow only one Telnet connection to a router.255 line vty 0 4 login password cisco access-class 1 B.com/c/en/us/td/docs/ios-xml/ios/iproute_ospf/configuration/124t/iro-12-4t-book/iro-cfg. For anyone viewing the configuration and issuing the show run command. service password-encryption access-list 1 permit 192.html#GUID-588D1301-F63C-4DAC-BF1C-C3735EB13673 Question No : 148 .0 0. line vty0 4 would enable all 5 vty connections. Incorrect answer: command. Which set of commands will accomplish this task? A. the password for Telnet access should be encrypted.

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

4.6 E.6 C.0 0.4.255.D Explanation: The simple syntax of static route: ip route destination-network-address subnet-mask {next-hop-IP-address | exit-interface} + destination-network-address: destination network address of the remote network + subnet mask: subnet mask of the destination network + next-hop-IP-address: the IP address of the receiving interface on the next-hop router + exit-interface: the local interface of this router where the packets will go out In the statement “ip route 10.0 10.0 255. HFD(config)# ip route 10.5.255 10.6.5. Which commands will accomplish this? (Choose two.0 fa0/0 D.(Topic 3) What is the default administrative distance of OSPF? A.255.5.0 Answer: C.0 F.6.255.255.255.A static route to the 10.5.6. HFD(config)# ip route 10.0.) A.5.0 255.255.0 255.255.6 0. Administrative distance defines the reliability of a routing protocol.255.5.5.6 255.6.6. Each routing 138 .255.255.6.4.255 10.0. HFD(config)# ip route 10.4.0/24 network is to be configured on the HFD router.5.6. 90 B.5.0.5.0.0: the destination network +fa0/0: the exit-interface Question No : 151 .6. HFD(config)# ip route 10.0 10.6.5. HFD(config)# ip route 10.255 fa0/0 B.0 0.5.0 255.0.5. 110 D. 100 C. 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 fa0/0: + 10.0. HFD(config)# 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.

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

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

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

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

Router(config)# router eigrp 100 Router(config-router)# network 192.1 Router(config-subif)# encapsulation dot1q 10 Router(config-subif)# ip address 192.168.1 255.1. Switch1(config)# vlan database Switch1(config-vlan)# vtp domain XYZ Switch1(config-vlan)# vtp server 144 .10.168.255.0 D.255.0 Router(config)# interface fastethernet 0/0.1 255.1 255.2 Router(config-subif)# encapsulation dot1q 20 Router(config-subif)# ip address 192.10.Question No : 159 . Router(config)# interface fastethernet 0/0 Router(config-if)# no shut down Router(config)# interface fastethernet 0/0.0 Router(config-if)# no shut down B.168.168.20.255.168. What commands must be configured on the 2950 switch and the router to allow communication between host 1 and host 2? (Choose two.255.(Topic 3) Refer to the exhibit.255.0 Router(config-router)# network 192. Router(config)# interface fastethernet 0/0 Router(config-if)# ip address 192.) A.0 C.20.255.

No configuration file was found in NVRAM. No configuration file was found in the PCMCIA card. On the switch.1 Answer: B.1. No configuration file was found in flash.E. 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 1.168. D. B. What can be determined about the router from the console output? A. 145 . Answer: A Explanation: When no startup configuration file is found in NVRAM. Switch1(config)# interface vlan 1 Switch1(config-if)# ip default-gateway 192.E Explanation: The router will need to use subinterfaces.(Topic 3) Refer to the exhibit. where each subinterface is assigned a VLAN and IP address for each VLAN. Question No : 160 . C. Switch1(config)# interface fastethernet 0/1 Switch1(config-if)# switchport mode trunk F. Configuration file is normal and will load in 15 seconds. the System Configuration Dialog will appear to ask if we want to enter the initial configuration dialog or not.

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

147 . section 10. Those states are defined in the OSPF RFC 2328. PPP also has built-in security mechanisms. HDLC B. Attempt. Frame Relay Answer: B Explanation: PPP: Provides router-to-router and host-to-network connections over synchronous and asynchronous circuits. X. including IP. exstart state > exchange state > loading state > full state C. exstart state > loading state > exchange state > full state B.html Topic 4.com/c/en/us/support/docs/ip/open-shortest-path-firstospf/13685-13.25 D. Exchange. such as Password Authentication Protocol (PAP) and Challenge Handshake Authentication Protocol (CHAP). 2-Way. PPP was designed to work with several network layer protocols. Reference: http://www. loading state > exchange state > full state > exstart state Answer: B Explanation: When OSPF adjacency is formed.(Topic 4) Which Layer 2 protocol encapsulation type supports synchronous and asynchronous circuits and has built-in security mechanisms? A. The states are (in order) Down.1. Exstart. in what order does it pass through each state? A. and Full. WAN Technologies Question No : 163 .When a router undergoes the exchange protocol within OSPF.cisco. exstart state > full state > loading state > exchange state D. Init. a router goes through several state changes before it becomes fully adjacent with its neighbor. PPP C. Loading.

Once the requesting router receives an Inverse ARP response. B. The DLCI 100 was dynamically allocated by the router. Answer: E Explanation: Inverse Address Resolution Protocol (Inverse ARP) was developed to provide a mechanism for dynamic DLCI to Layer 3 address maps. D. Inverse ARP works much the same way Address Resolution Protocol (ARP) works on a LAN. When using dynamic address mapping. However. The mapping between DLCI 100 and the end station IP address 172.1 from a DHCP server. the router knows the Layer 2 address which is the DLCI. 148 . E.Question No : 164 . The Serial0/0 interface is passing traffic. dynamic address mapping takes place automatically.1 was learned through Inverse ARP. no static address mapping is required. with ARP. If the Frame Relay environment supports LMI autosensing and Inverse ARP.3.(Topic 4) Refer to the exhibit. Inverse ARP requests a next-hop protocol address for each active PVC. Dynamic address mapping is enabled by default for all protocols enabled on a physical interface. The Serial0/0 interface acquired the IP address of 172. With Inverse ARP.3. the device knows the Layer 3 IP address and needs to know the remote data link MAC address.16. The DLCI 100 will be dynamically changed as required to adapt to changes in the Frame Relay cloud. C. Therefore. it updates its DLCI-to-Layer 3 address mapping table. but needs to know the remote Layer 3 IP address. What is the meaning of the term dynamic as displayed in the output of the show framerelay map command shown? A.16.

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

where as a point to point link would need to be provisioned to each location.237.22.65.4 The Finance Web Server has been assigned an address of 172.2 host C 192.168. All passwords have been temporarily set to “cisco”.18.1 host B 192.168.201. These include reduced cost.237. 150 .132. increased security since all traffic is encrypted.3 host D 192. All access from hosts in the Core or local LAN to the Finance Web Server should be blocked.201. host A 192. Question No : 167 CORRECT TEXT . Access to the router CLI can be gained by clicking on the appropriate host.168. and increased scalability as s single WAN link can be used to connect to all locations in a VPN.18.201.201. The computers in the Hosts LAN have been assigned addresses of 192. You have been tasked to create and apply a numbered access list to a single outbound interface.201.1 – 192.168.254. The Public Web Server in the Server LAN has been assigned an address of 172.201. All hosts in the Core and on local LAN should be able to access the Public Web Server.22. The requirements are: Host B should be able to use a web browser (HTTP) to access the Finance Web Server.17.(Topic 4) A corporation wants to add security to its network. The Core connection uses an IP address of 198. This access list can contain no more than three statements that meet these requirements.multiple locations are involved. Other types of access from host B to the Finance Web Server should be blocked.168.168.

151 .

152 .

To see which interface this is.png 153 .24. 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.34 PM. use the “show ip interface brief” command: Macintosh HD:Users:danielkeller:Desktop:Screen Shot 2015-11-17 at 3.Answer: Please check the below explanation for all details.

22. just click on host B to open its web browser.22. repeat to make sure they can reach the public server at 172.168.2 host 172.109. our next two instructions are these: Other types of access from host B to the Finance Web Server should be blocked. Then.18) Corp1(config)#access-list 100 permit ip host 172.2 to the Finance Web Server 172.22.109.109.18 any Finally. All access from hosts in the Core or local LAN to the Finance Web Server should be blocked.168125. 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.17 to check if you are allowed to access Finance Web Server or not. save the configuration Corp1(config-if)#end Corp1#copy running-config startup-config 154 . In the address box type http://172.109.22.22. If your configuration is correct then you can access it.109.125. so we will place our numbered access list here in the outbound direction. C and D) and check to make sure you can’t access Finance Web Server from these hosts.22.17 via HTTP (port 80).From this.22. To verify.17 Our last instruction is to allow all hosts in the Core and on the local LAN access to the Public Web Server (172. Finally. Click on other hosts (A. This can be accomplished with one command (which we need to do as our ACL needs to be no more than 3 lines long).109. blocking all other access to the finance web server: Corp1(config)#access-list 100 deny ip any host 172. we know that the servers are located on the fa0/1 interface.17 eq 80 Then.109. Corp1#configure terminal Our access-list needs to allow host B – 192. so our first line is this: Corp1(config)#access-list 100 permit tcp host 192.18.

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

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

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

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

157

device.

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

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

158

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

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

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

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

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

D.D Explanation: Sample “show frame-relay map” output: R1#sh frame map Serial0/0 (up): ip 10.) A. They create split-horizon issues. Each subinterface requires a unique IP address/subnet.(Topic 4) What are two characteristics of Frame Relay point-to-point subinterfaces? (Choose two. They require the use of NBMA options when using OSPF. the IP address of the local router Answer: B.4. the number of BECN packets that are received by the router B. B. broadcast. Answer: B. C. They require a unique subnet within a routing domain.0x6410). emulating virtual point to point leased lines.4.3 dlci 403(0x193.. 164 . active Serial0/0 (up): ip 10. Question No : 182 . status defined.4. the number of FECN packets that are received by the router D. E. dynamic. you cannot assign multiple interfaces in a router that belong to the same IP subnet. Remember.0x6430).4. the status of the PVC that is configured on the router E. dynamic. the value of the local DLCI C. They emulate leased lines.) A.C Explanation: Subinterfaces are used for point to point frame relay connections.Question No : 181 .1 dlci 401(0x191. They are ideal for full-mesh topologies.(Topic 4) Which two statistics appear in show frame-relay map output? (Choose two.

4. active Question No : 183 .. CHAP uses a three-way handshake.4. B.broadcast.0x6410).) A.4.0x6410).4.4. CHAP authentication periodically occurs after link establishment. show frame relay end-to-end Answer: C Explanation: Sample “show frame-relay map” output: R1#sh frame map Serial0/0 (up): ip 10.4 dlci 401(0x191. broadcast. dynamic.(Topic 4) Which two statements about using the CHAP authentication mechanism in a PPP link are true? (Choose two. CISCO.4. active Serial0/0 (up): ip 10.(Topic 4) What command is used to verify the DLCI destination address in a Frame Relay static configuration? A. active Serial0/0 (up): ip 10. status defined. CHAP uses a two-way handshake. status defined. broadcast. status defined.4.3 dlci 403(0x193. active Serial0/0 (up): ip 10. active Question No : 184 . dynamic. status defined. static. show frame-relay map D.. CISCO. status defined.0x6410).4. show frame-relay pvc B. show frame-relay lmi C. static.0x6430).4 dlci 401(0x191.1 dlci 401(0x191. 165 .. C.

to be forwarded across the PVC. CHAP has no protection from playback attacks. 102 is the remote DLCI that will receive the information. C. and may happen again at any time afterwards. This command should be executed from the global configuration mode. This happens at the time of establishing the initial link (LCP). F. Question No : 186 . E. Answer: B. The IP address 10. Which of the following statements is true concerning this command? A. so the PVC supports broadcast. allowing the routing protocol updates that use the broadcast update mechanism to be forwarded across itself. such as RIP updates. The verification is based on a shared secret (such as the client user's password). CHAP periodically verifies the identity of the client by using a three-way handshake. E.121.(Topic 4) 166 . This command is required for all Frame Relay configurations. D. The broadcast option allows packets.(Topic 4) The command frame-relay map ip 10. Answer: E Explanation: Broadcast is added to the configurations of the frame relay.8 102 broadcast was entered on the router.D.121.C Explanation: CHAP is an authentication scheme used by Point to Point Protocol (PPP) servers to validate the identity of remote clients.16. CHAP authentication passwords are sent in plaintext.16.8 is the local router port used to forward data. Question No : 185 . CHAP authentication is performed only upon link establishment. B.

0. Layer 4 D.0 command should be “ip address 172.255. Both routers are running IOS version 12.(Topic 4) At which layer of the OSI model does PPP perform? A.0. After reviewing the command output and graphic. That makes answer C correct.100. Layer 2 B.0.16. Layer 5 Answer: A Explanation: 167 .RouterA is unable to reach RouterB.1 255. what is the most likely cause of the problem? A. incorrect LMI configuration C. The “frame-relay map ip” statement is correct thus none of the four answers above is correct. incorrect map statement D.0. But we guess there is a typo in the output.100. incorrect bandwidth configuration B.2 255.255. incorrect IP address Answer: C Explanation: First we have to say this is an unclear question and it is wrong.16. Layer 3 C. Maybe the “ip address 172. Question No : 187 .

DLCI 17 describes the dial-up circuit from R2 and R3 to the service provider. 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. C. DLCI 17 describes a PVC on R2. DLCI 17 describes the ISDN circuit between R2 and R3. 168 . It cannot be used on R3 or R1. Which statement describes DLCI 17? A. 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. B. DLCI 17 is the Layer 2 address used by R2 to describe a PVC to R3.(Topic 4) Refer to the exhibit. D. Note that this DLCI has only local significance. It is a data link layer protocol (layer 2 in the OSI model) Question No : 188 . Frame Relay is strictly a Layer 2 protocol suite.

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

168.C.1.20.168.F Explanation: It’s a “router-on-a-stick” configuration. each hosts must also be in the same subnet as fa0/0.168.10 IP – same with hosts in VLAN 20. host A IP address: 192. Which means each host in the VLAN must corresponds with the VLAN configured on the sub-interfaces.1.1.129 F.168.1.(Topic 5) Refer to the exhibit. host B default gateway: 192. host B IP address: 192. A network administrator is adding two new hosts to SwitchA.64 C.can be collapsed using ::.79 B. host A default gateway: 192.168.128 E.) A. but this can only be done once in an IP address. 170 . host A IP address: 192.10 IP address as their default gateway.10 and VLAN 20 on fa0/0. Which three values could be used for the configuration of these hosts? (Choose three. host B IP address: 192.78 D. So each hosts in VLAN 10 must use fa0/0.190 Answer: A.168. Question No : 191 . VLAN 10 is configured on fa0/0.1.1.

190.130.1. agent C. supervisor F. set D. default gateway 192.168. AES E. you must define the relationship between the manager and the agent. default gateway 192.html 171 .168. Reference: http://www.78.94 and for 192.168. •An SNMP agent — The software component within the managed device that maintains the data for the device and reports these data.cisco.B.1.79.1.1.78 /27: 192. Question No : 192 .168. SNMP is defined in RFCs 3411 to 3418. to managing systems. manager Answer: A.So find out the usable IP addresses on each sub-interfaces – for 192.1.65 – .168. as needed.1.168.(Topic 5) What are three components that comprise the SNMP framework? (Choose three.1.168.1.190.130 /26: 192. •A managed information base (MIB) — The collection of managed objects on the SNMP agent. MIB B.168. Host B (using port 9 – VLAN 20) must use IP 192. Host A (using port 6 – VLAN 10) must use IP 192.F Explanation: The SNMP framework consists of three parts: •An SNMP manager — The system used to control and monitor the activities of network devices using SNMP. Cisco Nexus 1000V supports the agent and MIB.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. To enable the SNMP agent.) A.128 – .

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

30 Subnet Mask: 255.168.255.168. IP address: 192. For example. warnings will be logged.168.168.168. the router is assigned the first usable host address while the sales server is given the last usable host address. but significant.168.255.(Topic 5) An administrator must assign static IP addresses to the servers in a network.30 Subnet Mask: 255. IP address: 192.25 Answer: C Explanation: 173 .20.255. by using the “logging trap 4 command.255. Question No : 195 . errors.168.255. conditions exist 6 informational Informational messages 7 debugging Debugging messages If you specify a level with the “logging trap level” command.248 Default Gateway: 192. that level and all the higher levels will be logged.168.1 C.255. all the logging of emergencies.240 Default Gateway: 192. alerts. For network 192. IP address: 192. critical.24/29.17 E.255.168.255.255.168.30 Subnet Mask: 255.20.168.20.20.25 D. IP address: 192.20.254 Subnet Mask: 255.20.240 Default Gateway: 192.9 B.255.0 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. Which of the following should be entered into the IP properties box for the sales server? A.0 Default Gateway: 192.20.20.14 Subnet Mask: 255.20.20.20. IP address: 192.248 Default Gateway: 192.

Question No : 197 . because other public routers can use the same range. Addresses in a private range will not be routed on the Internet backbone.(Topic 5) What will happen if a private IP address is assigned to a public interface connected to an ISP? A. the usable hosts are 192. Only the ISP router will have the capability to access the public network.24.30 (used for the sales server).For the 192. IP address leased to the LAN D. network or subnetwork IP address B. C. B.(Topic 5) When a DHCP server is configured.168.25 (router) – 192. designated IP address to the DHCP server Answer: A.B Explanation: 174 .) A.168. and cannot be used globally for Internet use. IP address used by the interfaces E.20. D.24. broadcast address on the network C. The NAT process will be used to translate this address to a valid IP address. manually assigned address to the clients F. Answer: A Explanation: Private RFC 1918 IP addresses are meant to be used by organizations locally within their own network only. A conflict of IP addresses happens.24/29 network. which two IP addresses should never be assignable to hosts? (Choose two. Question No : 196 .168.

B.1.0/8 or 13. Answer: B. GLBP supports up to 1024 virtual routers. E.(Topic 5) What are three benefits of GLBP? (Choose three. When try to assign these addresses to hosts. GLBP supports clear text and MD5 password authentication between GLBP group members. 175 .0.(Topic 5) Refer to the exhibit. you will receive an error message saying that they can’t be assignable. GLBP can load share traffic across a maximum of four routers.255/24) should never be assignable to hosts. GLBP elects two AVGs and two standby AVGs for redundancy.2.0.1.) A. C.0. F. GLBP is an open source standardized protocol that can be used with multiple vendors.0/16) and broadcast address (for example 23. Question No : 198 .E Question No : 199 .D.Network or subnetwork IP address (for example 11. GLBP supports up to eight virtual forwarders per GLBP group. D.

ExternalRouter must be configured with static routes to networks 172. Because of the addressing on interface FastEthernet0/1.2.0/24 and 172. The number 1 referred to in the ip nat inside source command references access-list number 1.0/24. The configuration that is shown provides inadequate outside address space for translation of the number of inside addresses that are supported.What statement is true of the configuration for this network? A.1. FF02::1 176 .(Topic 5) Which IPv6 address is the all-router multicast group? A. the Serial0/0 interface address will not support the NAT configuration as shown. Question No : 200 . B. Answer: C Explanation: The “list 1 refers to the access-list number 1.16. D.16. C.

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

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

0. The Internet Protocol delivers packets sent to a unicast address to that specific interface. allcast Answer: A.Answer: B Explanation: The 10.0/22 subnet mask will include the 10.0. and only those four networks. usually belonging to different nodes. A packet that is sent to a multicast address is delivered to all interfaces that have joined the corresponding multicast group. which acquire the multicast address destination by participating in the multicast distribution protocol among the network routers.0 networks.0.3.(Topic 5) 179 .C Explanation: IPv6 addresses are classified by the primary addressing and routing methodologies common in networking: unicast addressing.0.0.(Topic 5) Which two are features of IPv6? (Choose two. podcast E. broadcast C. A packet sent to an anycast address is delivered to just one of the member interfaces. and multicast addressing. 10.0.0. Question No : 204 . Anycast addresses cannot be identified easily. A unicast address identifies a single network interface.0.2. A multicast address is also used by multiple hosts.0.1. Question No : 205 . anycast B.0. they have the same format as unicast addresses. 10. and 10. and differ only by their presence in the network at multiple points.) A. multicast D. An anycast address is assigned to a group of interfaces. Almost any unicast address can be employed as an anycast address. anycast addressing. typically the nearest host. according to the routing protocol’s definition of distance.

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

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

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)

183

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

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

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

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

1.28.255.168.1.56/27 C. 192.Question No : 221 .252 with a subnet mask of 255. 8bits+ 8bits+ 8bits + 2bits = /26 /26 bits subnet is 24bits + 11000000 = 24bits + 192 256 – 192 = 64 0 -63 64 – 127 Question No : 222 . what is the correct network address? 191 .240.1.56/26 B. Which subnet address should this network use to provide enough usable addresses while wasting the fewest addresses? A.(Topic 5) Refer to the exhibit. 192. A new subnet with 60 hosts has been added to the network.64/26 D.168.64/27 Answer: C Explanation: A subnet with 60 host is 2*2*2*2*2*2 = 64 -2 == 62 6 bits needed for hosts part. 192.16. 192.168.1.(Topic 5) Given an IP address 172.0.168. Therefore subnet bits are 2 bits (8-6) in fourth octet.

172.0. It's just a single address. FEC0:ABCD:WXYZ:0067::2A4 192 .31. ::1 This is a 128bit number.0 D.16.(Topic 5) Which option is a valid IPv6 address? A.16.255.16.0.0. Question No : 224 . so could also be written as ::1/128. 172.16. Question No : 223 . 2001:0000:130F::099a::12a B.0 C.A. the network address is 172.1? A.16. 172.0 Answer: A Explanation: For this example.24.16. 0::/10 Answer: A Explanation: In IPv6 the loopback address is written as.0 B.254. 2000::/3 D.16.28.31. with the first 127 bits being '0' and the 128th bit being '1'.16.0 and the broadcast IP address is 172. :: C. ::1 B.16. 2002:7654:A1AD:61:81AF:CCC1 C. the network range is 172.1 .16. 172.16.(Topic 5) Which IPv6 address is the equivalent of the IPv4 interface loopback address 127.172.

16. The /21 subnet will 193 .0.16.0. 2004:1:25A4:886F::1 Answer: D Explanation: An IPv6 address is represented as eight groups of four hexadecimal digits.0. but this can only be done once in an IP address. The groups are separated by colons (:).0.0 – 172.0.(Topic 5) Refer to the exhibit.0 and does it more efficiently than the /16 and /18 subnets.0. Which address range efficiently summarizes the routing table of the addresses for router Main? A. Question No : 225 .0/18 Answer: B Explanation: The 172.16.16.16.16.D./20 network is the best option as it includes all networks from 172.0. An example of an IPv6 address is 2001:0db8:85a3:0000:0000:8a2e:0370:7334./16 D. The leading 0’s in a group can be collapsed using ::. 172.0. 172.16. 172.0. each group representing 16 bits (two octets).16.0./21 B. 172./20 C.

172.0.0 /17 F.x so our summarized subnet must be also in that form -> Only A.0.32. 172.0.not include all the other subnets in this one single summarized address. 172. 172.32. In this VLSM addressing scheme.16.0/18.0 /16 E.0.0.0/24 and 172.16.16. 172. 172. All these 3 subnets have the same form of 172.0 /16 B.x.64.0.16.0 /16 Answer: A Explanation: Router A receives 3 subnets: 172. 172.128.0 /24 D.64.(Topic 5) Refer to the exhibit.16.0 /20 C. Question No : 226 . what summary address would be sent from router A? A.32. The smallest subnet mask of these 3 subnets is /18 so our summarized subnet must also 194 .0/18. B or .16.16.

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

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

188. 10. 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. has been noticed. Their purpose is merely to notify the other application that something has happened.(Topic 5) You are working in a data center environment and are assigned the address range 10. etc.31.B Explanation: A TRAP is a SNMP message sent from one application to another (which is typically on a remote host). The configuration of dynamic ACL can be read here: http://www. TRAP B. SET Answer: A.cisco.31. SNMPv2 PDUs fixed this by introducing the notion of an INFORM. shtml Question No : 230 .We can use a dynamic access list to authenticate a remote user with a specific username and password. You are asked to develop an IP addressing plan to allow the maximum number of subnets with as many as 30 hosts each.188.0/23.0/26 197 .(Topic 5) What are the alert messages generated by SNMP agents called? A.com/en/US/tech/tk583/tk822/technologies_tech_note09186a0080094524. Which IP address range meets these requirements? A. GET D. Question No : 231 . The authentication process is done by the router or a central access server such as a TACACS+ or RADIUS server. INFORM C. which is nothing more than an acknowledged TRAP.

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

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

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

v3 noAuthNoPriv Username No Uses a username match for authentication. v2c noAuthNoPriv Community String No Uses a community string match for authentication.Level Authentication Encryption What Happens v1 noAuthNoPriv Community String No Uses a community string match for authentication.(Topic 5) 201 .com/c/en/us/td/docs/ios/12_2/configfun/configuration/guide/ffun_c/fcf014. 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. 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 .cisco.

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

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

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

0/24 172. 172.255. 172.5.7.1.1.Refer to the exhibit.6.0.1.4.1.1. What is the most efficient summarization that R1 can use to advertise its networks to R2? A.5. 172.0/24 172.7.1.6.0 – 172.128/25 172.1.0.1.4.0/24 172.1.0/24 172.0/22 D.4. Question No : 242 .1.(Topic 5) 205 .0/24 172.4.4.4. 172.1.0/24 Answer: C Explanation: The 172.1.0/22 subnet encompasses all routes from the IP range 172.7.0/21 C.1.0/22 B. 172.0/24 E.1.1.0/25 172.

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

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

but has more than 6000 Syslog event messages.255.224 E. Enabling Syslog on a router automatically enables NTP for accurate time stamping.(Topic 5) Which three statements about Syslog utilization are true? (Choose three. A Syslog server helps in aggregation of logs and alerts. a mask of 255. Question No : 246 . 255. While there are some exceptions. System logging is a method of collecting messages from devices to a server running a syslog daemon. Cisco devices can send their log messages to a UNIX-style syslog service. a Cisco Catalyst 6500 switch running Cisco IOS Software Release 12." Syslog messages can be sent via UDP (port 514) and/or TCP (typically. In general.2(18)SXF contains about 90 SNMP trap notification messages.) A.255.D. There are more Syslog messages available within Cisco IOS than there are comparable SNMP trap messages." or "Syslog server. Logging to a central syslog server helps in aggregation of logs and alerts.255. Answer: C.224 will allow for up to 8 networks with 32 IP addresses each (30 usable). For example. The Syslog receiver is commonly called "syslogd. this data is typically sent in clear text over the network. such as SSL wrappers. The Syslog server automatically notifies the network administrator of network problems. A Syslog server provides the storage space necessary to store log files without using router disk space.240 Answer: D Explanation: For a class C network." "Syslog daemon. B. E. Utilizing Syslog improves network performance. there are significantly more Syslog messages available within IOS as compared to SNMP Trap messages.D.F Explanation: The Syslog sender sends a small (less than 1KB) text message to the Syslog receiver.255. A Syslog server provides the storage space necessary to store log files without using router disk space. A syslog 208 . F. C. 255. port 5000).255.255. D.

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

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

(Topic 5) Refer to the exhibit. 255.254. MAC address tracking.252.255. Reference: http://www.255.0 B.0 C.255. 255. trap D. Traps are messages alerting the SNMP manager to a condition on the network. link status (up or down).0 211 . restarts. loss of connection to a neighbor.255. or other significant events.html Question No : 251 . closing of a TCP connection. Which subnet mask will place all hosts on Network B in the same subnet with the least amount of wasted addresses? A. 255. capture Answer: C Explanation: An agent can send unsolicited traps to the manager.248. get C. Traps can mean improper user authentication.255. response B.cisco.0 D.What SNMP message alerts the manager to a condition on the network? A. 255.com/c/en/us/td/docs/switches/lan/catalyst2950/software/release/121_9_ea1/configuration/guide/scg/swsnmp.

255.g.0000 0000 -> 255.128 C.1. Working with only one Class B address. In IPv4 networks. 255.1. Routers are used to manage traffic and constitute borders between subnets.255.Answer: B Explanation: 310 hosts < 512 = 29 -> We need a subnet mask of 9 bits 0 -> 1111 1111.0 Answer: B.255. 255.168.252.255.224 E.0 network with a 24-bit routing prefix (192.192 F.255.0 D.0 B. 255. which of the following subnet masks will support an appropriate addressing scheme? (Choose two.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. The company needs a minimum of 300 sub-networks and a maximum of 50 host addresses per subnet.255.255.0/24). e. 255. which is a bit mask covering the number of bits used in the prefix.1111 1110. 255.255.0 is the subnet mask for the 192.255.255.(Topic 5) A national retail chain needs to design an IP addressing scheme to support a nationwide network. An IPv4 subnet mask is frequently expressed in quad-dotted decimal representation.) A.248.0 Question No : 252 .255.. with the organization's network address space (see also Autonomous System) partitioned into a tree-like structure. the routing prefix is often expressed as a "subnet mask".1111 1111. A routing prefix is the sequence of leading bits of an IP address that precede the portion of the address used as host identifier. Such subnets can be arranged hierarchically. 255. 212 .255.254. 255.168.255.

10.0/23 is the correct answer.1111 1100 (borrow 7 bits) Question No : 254 .10.10. autoconfiguration C.255.0/25 subnetted with mask 255.255.0/24 subnetted with mask 255. So our initial network should be 30 – 7 = 23.252 E. complicated header 213 .0.10.(Topic 5) The network administrator is asked to configure 113 point-to-point links.255.1111 1111. The network used for point-to-point connection should be /30.255.0.255.1111 1110.255. You can understand it more clearly when writing it in binary form: /23 = 1111 1111.0/16 subnetted with mask 255. 10.1.0.255.1. Which IP addressing scheme defines the address range and subnet mask that meet the requirement and waste the fewest subnet and host addresses? A.10. 10.255.0/18 subnetted with mask 255.252 C. So 10.252 D.0000 0000 /30 = 1111 1111.0/23 subnetted with mask 255. no broadcasts D.(Topic 5) What are three features of the IPv6 protocol? (Choose three.10.) A.255.Question No : 253 . 10. 10. optional IPsec B.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).10.252 B.

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

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

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

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

D Explanation: Only a /30 is needed for the point to point link and sine the use of the ip subnet-zero was used.40/30 F.128/25 C. C. B.172.172.) A.3. Also. NAT eliminates the need to re-address all hosts that require external access. 218 .0/30 E. Network A .16.16.128/25 is the best. Which network addresses should be used for Link A and Network A? (Choose two.3. Network A .3.16. D.3. Link A .172.16.16.172.192/26 D.48/26 B. Link A .172. NAT facilitates end-to-end communication when IPsec is enabled.16.3. 172.112/30 Answer: B.All of the routers in the network are configured with the ip subnet-zero command. NAT conserves addresses through host MAC-level multiplexing.16. a /25 is required for 120 hosts and again 172. Dynamic NAT facilitates connections from the outside of the network.172.0/30 is valid. Link A .3.3. valid option.(Topic 5) What are two benefits of using NAT? (Choose two. Question No : 260 .3.16. Network A .) A.

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

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

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

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

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

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

00bb. Port security with sticky MAC addresses retains dynamically learned MAC addresses during a link-down condition. will be forwarded out fa0/1. specifically port security using sticky addresses.FFFF.) A. F.00aa.bbbb. What two functions will occur when this frame is received by 2950Switch? (Choose two. C. Only host A will be allowed to transmit frames on fa0/1. the device attached to that port has the full bandwidth of the port. the first learned MAC address of 2950Switch. Port security with sticky MAC addresses provides many of the same benefits as port security with static MAC addresses. Only frames from source 0000. but sticky MAC addresses can be learned dynamically. You can use port security with dynamically learned and static MAC addresses to restrict a port's ingress traffic by limiting the MAC addresses that are allowed to send traffic into the port.) A.FFFF. Answer: B. Question No : 267 . SW1#show port-secure interface FastEthernet 0/12 B. D. SW1#show switchport port-secure interface FastEthernet 0/12 225 . This frame will be discarded when it is received by 2950Switch. Hosts B and C may forward frames out fa0/1 but frames arriving from other switches will not be forwarded out fa0/1. If you limit the number of secure MAC addresses to one and assign a single secure MAC address. When you assign secure MAC addresses to a secure port.(Topic 6) Which two commands correctly verify whether port security has been configured on port FastEthernet 0/12 on a switch? (Choose two.D Explanation: The configuration shown here is an example of port security. The MAC address table will now have an additional entry of fa0/1 FFFF. E. All frames arriving on 2950Switch with a destination of 0000.2950Switch(config-if)# switchport port-security maximum 1 The Ethernet frame that is shown arrives on interface fa0/1. B. the port does not forward ingress traffic that has source addresses outside the group of defined addresses.aaaa will be forwarded out fa0/1.

to allow traffic from hosts on networks 192.0.255. SW1#show port-security interface FastEthernet 0/12 E.168.168.C.0 0.1.168. would you use to accomplish this task? (Choose two.149.0 0. SW1#show running-config D. An example of the output of “show port-security interface” command is shown below: Question No : 268 . SW1#show switchport port-security interface FastEthernet 0/12 Answer: C.0 0.0.147.) A.149. and 192.146.168.255 C.148.(Topic 6) A network administrator is configuring ACLs on a Cisco router. 192.0.168.0.168.255 226 . access-list 10 permit ip 192.0.168.255.0.0 0. Which two ACL statements. 192. when combined.255 B.0 only.148. access-list 10 permit ip 192.255 D.146. access-list 10 permit ip 192.0.168. access-list 10 permit ip 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.1.147.

255 F.255” would allow only the 192.168.0 0.168.146.148.0. access-list 10 permit ip 192. no ip access-group 102 in 227 .146.168.255” would allow only the 192. and “access-list 10 permit ip 192. access-list 10 permit ip 192.1. An attempt to deny web access to a subnet blocks all traffic from the subnet. no ip access-class 102 in B.0 networks.146.168.0 0.0 0. Question No : 269 .168.168.1.168.255.0 and 192.146.0 255.0 networks.0 and 192.0.E.147.C Explanation: “access-list 10 permit ip 192.168. Which interface command immediately removes the effect of ACL 102? A.0.149.0.255. no ip access-class 102 out C.0 Answer: A.148.(Topic 6) Refer to the exhibit.

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

Configure a virtual terminal password and login process. The “access-group” command is only used to apply an access list to a physical interface -> C is not correct. Physically secure the interface. access-list 50 deny 192. B. Administratively shut down the interface.168. access-list 2500 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” ->.1.(Topic 6) What can be done to secure the virtual terminal interfaces on a router? (Choose two. C. access-list 110 permit ip any any B.0. Question No : 272 .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.255 C.0. Create an access list and apply it to the virtual terminal interfaces with the access-group command.1 0.1. Answer: D.) A. The most simple way to secure the virtual terminal interface is to configure a username & password to prevent unauthorized login. D.Which item represents the standard IP ACL? A. E.168. Moreover. 229 .1.1 D. Enter an access list and apply it to the virtual terminal interfaces using the access-class command.E Explanation: It is a waste to administratively shut down the interface. access list 101 deny tcp any host 192. To apply an access list to a virtual terminal interface we must use the “access-class” command.168.

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

22.23 eq 80 comment: To deny any source to access finance server address (172.168.18.23.242.22.3 host 172.33.242.168.33.23 eq 80 231 . The Finance Web Server is assigned an IP address of 172.22.33.33.254 host A 192.30. The Core connection uses an IP address of 198.168.2 host C 192.242.23) {destination addr} on port number 80 (web) Corp1(config)#access-list 100 deny tcp any host 172. Answer: Select the console on Corp1 router Configuring ACL Corp1>enable Corp1#configure terminal comment: To permit only Host C (192.33.65.3){source addr} to access finance server address (172.242.168.33. All passwords have been temporarily set to "cisco".22.1 192.33.168.Access to the router CLI can be gained by clicking on the appropriate host.4 The servers in the Server LAN have been assigned addresses of 172.22.22.22.168.17 172.168. The computers in the Hosts LAN have been assigned addresses of 192.196.242.242.168.1 host B 192.3 host D 192.33.23) {destination addr} on port number 80 (web) Corp1(config)#access-list 100 permit tcp host 192.242.

240 ( range of address specified going to server is given as 172.x. Host opens a web browser page. Step 3: Only Host C (192.168.x.3) can access the Finance Web Server you can click on NEXT button to successfully submit the ACL SIM.30 ) Comment: Place the ACL to check for packets going outside the interface towards the finance web server. Check whether you configured correctly and in order. 232 .22.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.33.(Topic 6) Which statement about access lists that are applied to an interface is true? A. This should be corrected in order ACL to work type this commands at interface mode : no ip address 192.22. Corp1(config-if)#ip access-group 100 out Corp1(config-if)#end Important: To save your running config to startup before exit.242. You can place as many access lists as you want on any interface.168. & D. Corp1#copy running-config startup-config Verifying the Configuration: Step1: show ip interface brief command identifies the interface on which to apply access list. B.172. Step 4: If only Host C (192.242.17 .33. Select address box of the web browser and type the ip address of finance web server (172.x. If the other host can also access then maybe something went wrong in your configuration. 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. C.242.22. Step2: Click on each host A. Corp1(config)#interface fa 0/1 If the ip address configured already is incorrect as well as the subnet mask. B.3) has access to the server.30 255.x.x (removes incorrect configured ipaddress and subnet mask) Configure Correct IP Address and subnet mask: ip address 172.22.242. Question No : 275 .255. You can apply only one access list on any interface.255.23) to test whether it permits /deny access to the finance web Server.x 255.

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

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

all other traffic should be allowed. Topic 7. Infrastructure Management Question No : 279 CORRECT TEXT . BPDU Filter Answer: D Explanation: We only enable PortFast feature on access ports (ports connected to end stations). All other traffic is permitted. No other hosts will have web access to the Finance Web Server. it will be shut down to prevent a loop. when a PortFast receives a BPDU. 235 . 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. 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.E.(Topic 7) A network associate is adding security to the configuration of the Corp1 router. 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. Since there are multiple resources for the corporation at this location including other resources on the Finance Web Server. With BPDU Guard.

254 host A 192.168.168.1 192.22.Access to the router CLI can be gained by clicking on the appropriate host.240.168.18.141.26 eq www Corp1(config)# access-list 128 deny tcp any host 172.22.141.240. The Core connection uses an IP address of 198.168.240.240.1 host B 192. All passwords have been temporarily set to "cisco".3 Answer: Corp1#conf t Corp1(config)# access-list 128 permit tcp host 192.247.26 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 .65 The computers in the Hosts LAN have been assigned addresses of 192.(Topic 7) 236 .168.168.1 host 172.240.2 host C 192.240.

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

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

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240 .

241 .

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 an OSPF hello and dead interval mismatch. the username is not configured on R3 and R6. D. What is causing the problem? A. C. There is a PPP authentication issue. 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. 242 . B. The R3 router ID is configured on R6.

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

244 .

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247 .

The loopback interface is shut down on R5. B.55. Sending 5. Answer: C Explanation: R5 does not have a route to the 10. The IP address that is configured on the Lo1 interface on R5 is incorrect.1.1. C. timeout is 2 seconds: Packet sent with a source address of 10.5.1. 100-byte ICMP Echos to 10.1 network. which is the loopback0 IP address of R1.1 network 248 . The network statement is missing on R1. D.5.5.1 Type escape sequence to abort.55 source 10.1. When looking at the EIGRP configuration on R1.1.1.1. Success rate is 0 percent (0/5) Why are the pings failing? A.1.1 …….5. The network statement is missing on R5.Study the following output taken on R1: R1# Ping 10. we see that the 10.

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

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

251 .

252 .

253 .

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

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

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

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

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

259 .

260 .

261 .

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

4. B. F.4. C.0. Interface S0/0 on RouterB is administratively down.168.168.) A. D. C. E. 263 . IP traffic would be passed through the interface but TCP and UDP traffic would not. The encapsulation that is configured on S0/0 of RouterB does not match the encapsulation that is configured on S0/0 of RouterA.4.4.4. D. Hosts in network 192. Interface S0/0 on RouterA is configured with an incorrect subnet mask. Based on the output from RouterA.2. Routing protocol updates for the 10.0.0. The cable that is connected to S0/0 on RouterA is faulty.4. Answer: B Explanation: From the output of access-list 114: access-list 114 permit ip 10. The IP address that is configured on S0/0 of RouterB is not in the correct subnet.0 0.(Topic 7) Refer to the exhibit.0 network. Interface S0/0 on RouterA is not receiving a clock signal from the CSU/DSU. Attempts to telnet to the router would fail. what are two possible reasons for the failure? (Choose two.0 network would not be accepted from the fa0/0 interface.0/24 network Question No : 288 . It would allow all traffic from the 10.3.A. B.255 any we can easily understand that this access list allows all traffic (ip) from 10.0 are unable to reach hosts in network 192.4.4.

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

0. in this case an Ethernet cable connection. We do this by simply making a ping to the loopback interface 127.0.com to assure that the far end server is not down (it sometimes make we think we can’t access to the Internet). straight-through. checking if the IP can be assignable for host. 265 . “verify Ethernet cable connection” means that we check if the type of connection (crossover. We are using a URL so this step belongs to layer 7 of the OSI model.com.(Topic 7) Refer to the exhibit.The question asks us to “begin with the lowest layer” so we have to begin with Layer 1: verify physical connection. Verify IP configuration belongs to layer 3. 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. 2) and TCP/IP stack (layer 3) are working properly. the RJ45 headers are plugged in. Question No : 290 .1. For your information. the signal on the cable is acceptable… Next we “verify NIC operation”. rollover…) is correct. If it works then the NIC card (layer 1. microsoft. For example.

1. The Fa0/0 interface on RouterA is on a subnet that can't be used.63 For the network 192. You are required to troubleshoot and resolve the EIGRP issues between the various routers.168. The address of SwitchA is a subnet address.65/27: Increment: 32 Network address: 192. HostA is not on the same subnet as its default gateway.168. E. D. Your company has connected the routers R1. 266 .64 Broadcast address: 192.95 -> These two IP addresses don’t belong to the same network and they can’t see each other.HostA cannot ping HostB. Use the appropriate show commands to troubleshoot the issues. Answer: D Explanation: Now let’s find out the range of the networks on serial link: For the network 192.1.1. what is the cause of this problem? A.1.168.168. R2. B.1. The Fa0/0 interface on RouterB is using a broadcast address. SW1 and SW2 are also connected to the routers R4 and R5.(Topic 7) Scenario Refer to the topology.168. and R3 with serial links. Assuming routing is properly configured.62/27: Increment: 32 Network address: 192. The EIGRP routing protocol is configured.168. C. respectively. R2 and R3 are connected to the switches SW1 and SW2. The serial interfaces of the routers are not on the same subnet.1.32 Broadcast address: 192. Question No : 291 .

267 .

268 .

269 .

270 .

4/32. Answer: B Explanation: For an EIGRP neighbor to form. we see that R4 is configured for EIGRP AS 2. C.0. The loopback addresses haven't been advertised.4.K values . Automatic summarization is enabled. and the network command is missing on R4. so it does not peer with R5. The interfaces are shutdown.4.4.6/32 are not appearing in the routing table of R5. and 10. when it should be AS 1.4. the following must match: . 271 .AS numbers . R4 has been incorrectly configured to be in another AS. so only the 10. D.0 network is displayed.Neighbors must be in the same subnet .0.4. B.The loopback interfaces on R4 with the IP addresses of 10.5/32.4. so they are not being advertised.Authentication method and key strings Here. Why are the interfaces missing? A. 10.

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

Question No : 293 CORRECT TEXT . Password In access user EXEC mode using the console is xxx 4. 1.2. Enable. please note the following.165. Name or the router is xxx 2.(Topic 7) Central Florida Widgets recently installed a new router in their office. Interfaces should be enabled. secret password is xxx 3.176/28 . Configure the router per the following requirements: Name of the router is R2 Enable. Router protocol is RIPV2 Attention: In practical examinations. IP information 273 . the actual information will prevail. The password to allow telnet access to the router is xxx 5. Complete the network installation by performing the initial router configurations and configuring R1PV2 routing using the router command line interface (CLI) on the RC.router has last assignable host address in the subnet.201. secret password is cisco The password to access user EXEC mode using the console is cisco2 The password to allow telnet access to the router is cisco3 IPV4 addresses must be configured as follows: Ethernet network 209.0.router has fourth assignable host address in subnet Serial network is 192.0/27 .

You are required to troubleshoot and resolve the EIGRP issues between the various routers.0.2.240 R2(config-if)#no shutdown R2(config-if)#exit R2(config)#router rip R2(config-router)#version 2 R2(config-router)#network 209.255.201. Use the appropriate show commands to troubleshoot the issues.255.201.(Topic 7) Scenario Refer to the topology. SW1 and SW2 are also connected to the routers R4 and R5.224 R2(config)#interface s0/0/0 R2(config-if)#ip address 192. respectively. and R3 with serial links.0.176 R2(config-router)#end R2#copy run start Question No : 294 .255.2.165.165.4 255. R2 and R3 are connected to the switches SW1 and SW2. R2. Your company has connected the routers R1.190 255. The EIGRP routing protocol is configured.0 R2(config-router)#network 192. 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 209.255.

275 .

276 .

277 .

278 .

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

0 network: 280 .168. The IP addresses are in the 192.As you can see. they are both using e0/0.16.

egress interface D. source MAC address C. the “network 192.16.0” command is missing on R6.168.(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.) A. Question No : 295 . source IP address B. IP next-hop Answer: A. ingress interface E. destination IP address F. These attributes are the IP packet identity or fingerprint of the packet and 281 .E Explanation: Each packet that is forwarded within a router or switch is examined for a set of IP packet attributes.But when we look at the EIGRP configuration.

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

B. Communication between VLAN3 and the other VLANs would be disabled. In addition. unless otherwise indicated. Then normal network function would resume. Question No : 297 . Netflow B. 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. STP creates a loop-free tree structure consisting of leaves and branches that span the entire Layer 2 network. You can determine the cause of high CPU use in a router by using the output of the show 283 . WCCP C. Host B would not be able to access the server in VLAN9. 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. connections between switches are assumed to be trunks. Note that the terms bridge and switch are used interchangeably when discussing STP. C. For less than a minute.cable being disconnected? A. The actual mechanics of how bridges communicate and how the STP algorithm works will be discussed at length in the following topics. Host B would not be able to access the server in VLAN9 until the cable is reconnected. IP SLA D. The transfer of files from Host B to the server in VLAN9 would be significantly slower. SNMP Answer: D Explanation: Sometimes. D.(Topic 7) Which protocol can cause overload on a CPU of a managed device? A.

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

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

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

287 .

288 .

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

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 .

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

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

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

303 .

304 .

305 .

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

C. D. Question No : 308 .B.D Explanation: 307 . 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.(Topic 7) What are the three things that the Netflow uses to consider the traffic to be in a same flow? (Choose three) A. IP address B. The 3rd line denies all telnet traffic and the 4th line allows icmp traffic to be sent (ping). C. Remove access-group 106 in from interface fa0/0 and add access-group 104 in. Interface name C. MAC address Answer: A. Change the ip access-group command on fa0/0 from “in” to “out”. Port numbers D. Remove access-group 102 out from interface s0/0/0 and add access-group 114 in E. Remove access-group 106 in from interface fa0/0 and add access-group 115 in. L3 protocol type E. 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.

The appropriate static routes have also been configured (since the company will be a stub network.110/29 inside local addresses .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.192.105 .168.184.18. 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.168.100. Configuration information: router name – Weaver inside global addresses – 198.18. an IP Flow is based on a set of 5 and up to 7 IP packet attributes. Traditionally.198. These attributes are the IP packet identity or fingerprint of the packet and 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 Question No : 309 CORRECT TEXT .17 – 192.What is an IP Flow? Each packet that is forwarded within a router or switch is examined for a set of IP packet attributes. no routing protocol will be required) All passwords have been temporarily set to “cisco”. Functionality can be tested by clicking on the host provided for testing.100.184.

168.16 0. Answer: The company has 14 hosts that need to access the internet simultaneously but we just have 6 public IP addresses from 198.17 – 192.18.18.184.168. Weaver(config)#ip nat pool mypool 198.100.105 198.255. The hosts in the company LAN have been assigned private space addresses in the range of 192.184.105 198.248 Create a standard access control list that permits the addresses that are to be translated.18.255.A network associate is configuring a router for the weaver company to provide internet access.110 netmask 255.100.100.184.168.100. into an address from the pool named mypool (the pool contains addresses from 198.184.17 to 192.18.0. Weaver(config)#ip nat inside source list 1 pool mypool overload This command translates all source addresses that pass access list 1. The ISP has provided the company six public IP addresses of 198.110).0.168.184.105 to 198.100. which means a source address from 192. The company has 14 hosts that need to access the internet simultaneously.18.105 to 198.184.168. Therefore we have to use NAT overload (or PAT) Double click on the Weaver router to open it Router>enable Router#configure terminal First you should change the router's name to Weaver Router(config)#hostname Weaver Create a NAT pool of global addresses to be allocated with their netmask.18.184.15 Establish dynamic source translation. specifying the access list that was defined in the prior step.110/29.110. Weaver(config)#access-list 1 permit 192.18.18.184.30. Overload keyword allows to map multiple IP addresses to a single registered IP address 309 .30.

Based on the information in the graphic.114 Question No : 310 . This is how to configure the NAT inside and NAT outside. The routers cannot establish an adjacency relationship on their common Ethernet link. B. The priority on R1 should be set higher.0. we should save all your work with the following command: Weaver#copy running-config startup-config Check your configuration by going to "Host for testing" and type: C :\>ping 192.(Topic 7) A network administrator is troubleshooting the OSPF configuration of routers R1 and R2. 310 .(many-to-one) by using different ports.114 The ping should work well and you will be replied from 192. The graphic shows the output of the show ip ospf interface e0 command for routers R1 and R2.2. what is the cause of this problem? A. 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. C.2.0. The cost on R1 should be set higher. The question said that appropriate interfaces have been configured for NAT inside and NAT outside statements. The OSPF area is not configured properly.

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

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

313 .

314 .

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

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

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

318 .

319 .

320 .

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

5. Question No : 315 .(Topic 7) Refer to the exhibit. Then.5.5.5 and 10.5. The network shown in the diagram is experiencing connectivity problems.55 the preferred path is via Serial 1/3. Which of the following will correct the problems? (Choose two. using the “show ip route” command on R1 we can see that to reach 10.) 322 . which we see from the diagram is the link to R2.Answer: A Explanation: Using the “show ip int brief command” on R5 we can see the IP addresses assigned to this router.

10.1. C.1. E. They are usually faster than cable and DSL connections. B.1 -.A.2. B.224.254.255. They are frequently used by rural users without access to other high-speed connections.2.1. Configure the IP address of Host A as 10.255.2 -. Mixed Questions Question No : 316 .2.254/24 VLAN2 It is obvious that the configurations of the gateways of members in VLAN2 and the associated network segments are wrong.X Mask : 255.254 The configuration of sub-interface on router 2 is as follows: Fa0/0.255. F.255. 323 .254 The IP information of member Host B in VLAN2 is as follows: Address : 10.0 Topic 8.1.0 Gateway : 10.12 Mask : 255.1.126 Mask : 255.1.255.240. Configure the gateway on Host A as 10. The layer3 addressing information of Host B should be modified as follows: Address : 10. D.1.255.1.2.0 Gateway : 10. D.1. C.2.254/24 VLAN1 Fa0/0.1. The IP information of member Host A in VLAN1 is as follows: Address : 10.2.255.1. Configure the IP address of Host B as 10.255.1. Answer: B.1. Configure the masks on both hosts to be 255.255. Their upload speed is about 10 percent of their download speed.D Explanation: The switch 1 is configured with two VLANs: VLAN1 and VLAN2.2.1. They are usually at least 10 times faster than analog modem connections.255. Configure the masks on both hosts to be 255.) A.10.1.1.1.1. Configure the gateway on Host B as 10.(Topic 8) What are three characteristics of satellite Internet connections? (Choose three.

E.146.4 The Finance Web Server has been assigned an address of 172.168.168.78.65.22. 324 . All passwords have been temporarily set to “cisco”. The Core connection uses an IP address of 198. All hosts in the Core and on local LAN should be able to access the Public Web Server.168.22.78.1 – 192.168.146.78.168. Access to the router CLI can be gained by clicking on the appropriate host.C Question No : 317 CORRECT TEXT . Other types of access from host C to the Finance Web Server should be blocked.78.B. Answer: A.18.17. They use radio waves to communicate with cellular phone towers. The Public Web Server in the Server LAN has been assigned an address of 172.209. All access from hosts in the Core or local LAN to the Finance Web Server should be blocked.78.1 host B 192.254. This access list can contain no more than three statements that meet these requirements.78.3 host D 192. You have been tasked to create and apply a numbered access list to a single outbound interface. host A 192.18. They require a WiMax tower within 30 miles of the user location.2 host C 192.168.(Topic 8) A corporation wants to add security to its network. F. The computers in the Hosts LAN have been assigned addresses of 192. The requirements are: Host C should be able to use a web browser (HTTP) to access the Finance Web Server.

325 .

326 .

34 PM.24. use the “show ip int brief” command: Macintosh HD:Users:danielkeller:Desktop:Screen Shot 2015-11-17 at 3.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. To see which interface this is.

B and D) and check to make sure you can’t access Finance Web Server from these hosts. so our first line is this: Corp1(config)#access-list 100 permit tcp host 192.22.18) Corp1(config)#access-list 100 permit ip host 172. All access from hosts in the Core or local LAN to the Finance Web Server should be blocked.109.125. Then. If your configuration is correct then you can access it.22.109. 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.From this.17 Our last instruction is to allow all hosts in the Core and on the local LAN access to the Public Web Server (172.17 via HTTP (port 80). To verify. save the configuration Corp1(config-if)#end Corp1#copy running-config startup-config 328 .17 to check if you are allowed to access Finance Web Server or not. we know that the servers are located on the fa0/1 interface.17 eq 80 Then. Finally. just click on host C to open its web browser. so we will place our numbered access list here in the outbound direction.168. This can be accomplished with one command (which we need to do as our ACL needs to be no more than 3 lines long).109. our next two instructions are these: Other types of access from host C to the Finance Web Server should be blocked.22.109. repeat to make sure they can reach the public server at 172. In the address box type http://172.18.22.168125.109.3 host 172.109.22. Click on other hosts (A. blocking all other access to the finance web server: Corp1(config)#access-list 100 deny ip any host 172.22. Corp1#configure terminal Our access-list needs to allow host C – 192.3 to the Finance Web Server 172.22.18 any Finally.

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

0. It decreases the metric for routes that are advertised from RouterB. It ensures that data will be forwarded by RouterB. B. Answer: B. C. E. D. It specifies that the router ID for RouterB should be 10.+ If a loopback interface is not defined.A. It indicates that RouterB should be elected the DR for the LAN. the highest IP address of all active router’s physical interfaces will be chosen. -> The loopback interface will be chosen as the router ID of RouterB – 330 .0. It provides stability for the OSPF process on RouterB.1.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.

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

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

255. An example of an IPv6 address is: 2001:0db8:85a3:0000:0000:8a2e:0370:7334 The hexadecimal digits are case-insensitive.0. fd15:db8:0::700:3:4F:527B D.[1] Thus.) A.E Explanation: An IPv6 address is represented as eight groups of four hexadecimal digits.255 GigabitEthernet0/1 C. the example address can be further simplified: 2001:db8:85a3::8a2e:370:7334 333 . router(config)#ip route 0. The full representation of eight 4-digit groups may be simplified by several techniques.255.0.0.0 GigabitEthernet0/1 B. router(config-router)#default-information originate always Answer: A Question No : 327 . fd15:0db8:0000:0000:700:3:400F:527B B.0. fd15::db8::700:3:400F:527B C.0 0. router(config-router)#default-information originate D.0. eliminating parts of the representation. each group representing 16 bits (two octets).0 255. fd15:0db8::7:3:4F:527B E. but IETF recommendations suggest the use of lower case letters. Leading zeroes Leading zeroes in a group may be omitted. fd15:db8::700:3:400F:572B Answer: D.[1] Thus.(Topic 8) In which two formats can the IPv6 address fd15:0db8:0000:0000:0700:0003:400F:572B be written? (Choose two. router(config)#ip route 0.0. The groups are separated by colons (:). 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 (::).A.

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

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

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

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

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

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

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

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

show ip dhcp conflict 10. B.122-23f.bin D.B. Router(config)# boot system tftp c7300-js-mz.C Question No : 347 .bin Answer: A.12 C.What is the danger of the permit any entry in a NAT access list? A.12 Answer: A Question No : 348 .122-33. Router(config)#boot system rom c7301-advipservicesk9-mz.2.bin B. D.121-20. Router(config)#boot bootldr bootflash:c4500-jk9s-mz. It can lead to overloaded resources on the router.(Topic 8) Which three commands can you use to set a router boot image? (Choose three. It can disable the overload command.) A. show ip dhcp binding 10. Router(config)# boot system flash c4500-p-mz.T4.SB8a. C.124-24. It prevents the correct translation of IP addresses on the inside network.bin E.bin F.(Topic 8) Which command can you execute to set the user inactivity timer to 10 seconds? 342 .(Topic 8) Which command can you enter to display duplicate IP addresses that the DHCP server assigns? A. show ip dhcp server statistics D.0.bin C. Answer: A Question No : 346 . It can cause too many addresses to be assigned to the same interface.2.2. Router> boot flash:c180x-adventerprisek9-mz-124-6T. Router(config)#boot flash:c180x-adventerprisek9-mz-124-6T. show ip dhcp database 10.0.12 B.0.

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

Router#show run C.(Topic 8) Which command can you enter to verify that a 128-bit address is live and responding? A.16.(Topic 8) After you configure the Loopback0 interface. which command can you enter to verify the status of the interface and determine whether fast switching is enabled? A. Router#show ip interface loopback 0 B.16.A.0/24 344 .16. telnet C.5/32? A. 172. ping D.1.1.0/25 C. traceroute B. ping ipv6 Answer: C Question No : 352 .16. 172.0/26 B.1. Switch#show ip interface brief C. Router#show ip interface brief Answer: A Question No : 353 .1. 172.(Topic 8) What is the correct routing match to reach 172. Switch#show interface vlan 20 D. Switch#show ip interface vlan 20 Answer: A Question No : 351 . Switch#show vlan id 20 B. Router#show interface loopback 0 D.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

0. MSTP B.0. show interface switchport Answer: A Question No : 401 .(Topic 8) Which command can you enter to route all traffic that is destined for 192. Mono Spanning Tree Answer: A Question No : 400 .0 GigabitEthernet0/1 C.0 GigabitEthernet0/1 Answer: A 363 .0 255.0 255.0 0. show interfaces D.255.0 255.0.255.0 GigabitEthernet0/1 B.240.168.168. router(config)#ip route 0.(Topic 8) Which command can you enter to determine whether a switch is operating in trunking mode? A.0/20 to a specific interface? A.0 GigabitEthernet0/1 D.0. PVST+ D.0.A.0. router(config)#ip route 0.255.255. show ip interface brief B. RSTP C.168.0.0.0. router(config)#ip route 192.255. router(config)#ip route 192. show vlan C.