practice final ccna 4 sem2- 16-1-2013

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1 A sniffer program has captured a packet with a destination IP address of 224.0.0.10. Which protocol uses this IP address? RIP RIPv2 OSPF EIGRP 2 Refer to the exhibit. How many routes are child routes? 1 3 4 6 3 A network is configured with the IP, IPX, and AppleTalk protocols. Which routing protocol is recommended for this network? RIPv1 RIPv2 EIGRP OSPF 4

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Page 1: Practice Final Ccna 4 Sem2- 16-1-2013

1 A sniffer program has captured a packet with a destination IP address of 224.0.0.10.

Which protocol uses this IP address?

RIP

RIPv2

OSPF

EIGRP

2

Refer to the exhibit. How many routes are child routes?

1

3

4

6

3

A network is configured with the IP, IPX, and AppleTalk protocols.

Which routing protocol is recommended for this network?

RIPv1

RIPv2

EIGRP

OSPF

4

Page 2: Practice Final Ccna 4 Sem2- 16-1-2013

Refer to the exhibit. R2 is configured correctly. The network administrator has configured R1 as shown.

Which two facts are true about the forwarding of route information by R1? (Choose two.)

R1 will forward the route information for subnet 192.168.100.0/30.

R1 will not forward route information for subnet 192.168.100.4/30.

R1 will forward the route information with an administrative distance set to 50.

R1 will forward the summarized route information for network 192.168.100.0/24.

R1 will forward route information for subnet 10.10.10.0/30 out the serial interface.

5

Which phase of the router boot process involves running diagnostics on the hardware components from

ROM?

performing the POST

loading the bootstrap program

locating and loading the Cisco IOS software

locating and loading the startup configuration file

6

Page 3: Practice Final Ccna 4 Sem2- 16-1-2013

Refer to the exhibit. Based on the output from the show running-config and debug ip rip commands,

what are two of the routes that are added to the routing table of R1? (Choose two.)

R 192.168.1.0/24 [120/1] via 172.16.2.1, 00:00:24, Serial0/0/1

R 192.168.100.0/24 [120/1] via 172.16.1.1, 00:00:24, Serial0/0/0

S 192.168.1.0/24 [1/0] via FastEthernet0/0

R 192.168.9.0/24 [120/1] via 172.16.2.1, 00:00:24, Serial0/0/0

R 192.168.2.0/24 [120/1] via 172.16.1.2, 00:00:24, Serial0/0/0

7

Refer to the exhibit. A network administrator has configured OSPF using the following

command:

network 192.168.1.32 0.0.0.31 area

0

Which router interface will participate in OSPF?

FastEthernet0/0

FastEthernet0/1

Serial0/0/0

Serial0/0/1

Page 4: Practice Final Ccna 4 Sem2- 16-1-2013

8

What is the advantage of configuring a static route with an exit interface instead of a next-hop address?

The router will perform a recursive lookup.

This route will automatically be used as the gateway of last resort.

The exit interface configuration consumes less router processing time.

The exit interface configuration has an administrative distance value of 1.

9

Refer to the exhibit. The IP addresses on all interfaces on router R1 were configured before the OSPF

protocol had been enabled on the router. No OSPF router ID was manually configured.

Which IP address will be selected by the router as an OSPF router ID?

10.10.10.1

172.16.1.1

172.16.2.1

192.168.1.1

192.168.100.1

10

Page 5: Practice Final Ccna 4 Sem2- 16-1-2013

Refer to the exhibit. The network administrator issues the command no ip classless on Router1. What

forwarding action will take place on a packet that is received by Router1 and is destined for host 1

92.168.0.26?

The packet will be dropped.

The packet will be forwarded to the gateway of last resort.

The packet will match the 192.168.0.0 network and be forwarded out Serial 0/0.

The packet will most closely match the 192.168.0.8 subnet and be forwarded out Serial 0/1.

11

Refer to the exhibit. A network administrator has run the show interface command. The output of this

command is displayed. What is the first step that is required to make this interface operational?

Switch the cable with a known working cable.

Issue the no shutdown command on the interface.

Configure the interface as a loopback interface.

Set the encapsulation for the interface.

12

A network administrator needs to assign the very last usable IP address in the 172.24.64.0/18 network

range to the router interface that serves this LAN. Which IP address should the administrator

configure on the interface?

172.16.128.154/18

172.16.255.254/18

Page 6: Practice Final Ccna 4 Sem2- 16-1-2013

172.24.64.254/18

172.24.127.254/18

13

Refer to the exhibit. The network administrator is planning IP addressing of a new network.

What part of this addressing scheme must be changed to allow communication between

host A and the server?

the IP address of the server

the default gateway of host A

the IP address of host A

the default gateway of the server

14

Refer to the exhibit. What happens to a packet that has 172.16.0.0/16 as the best match in the routing

table that is shown?

The packet is discarded.

The packet is flooded out all interfaces.

The packet is forwarded via Serial0/0/0.

The packet is forwarded via FastEthernet0/0.

15

Page 7: Practice Final Ccna 4 Sem2- 16-1-2013

Refer to the exhibit. A ping between host A and host B is successful, but pings from host A to

operational hosts on the Internet fail. What is the reason for this problem?

The FastEthernet interface of R1 is disabled.

One of the default routes is configured incorrectly.

A routing protocol is not configured on both routers.

The default gateway has not been configured on host A.

16

Refer to the exhibit. The show cdp neighbors command was run at R1. Which two facts

about the newly detected device can be determined from the output? (Choose two.)

ABCD is a router that is connected to R1.

ABCD is a non-CISCO device that is connected to R1.

The device is connected at the Serial0/0/1 interface of R1.

R1 is connected at the S0/0/1 interface of device ABCD.

ABCD does not support switching capability.

Page 8: Practice Final Ccna 4 Sem2- 16-1-2013

17

Refer to the exhibit. All routes are advertised and fully operational on all routers. Which statement

is true about the path that the data will take from router A to router B?

If EIGRP is used with default configurations, the data will be equally distributed between

two paths — A, D, B and A, C, B.

If RIPv1 is used with default configurations, the data will be load-balanced on all paths.

If EIGRP and OSPF are both used with default configurations, the data will be sent through

paths learned by the OSPF protocol.

If RIPv2 is used with default configurations, the data will be equally distributed between two

paths — A, D, B and A, C, D.

18

Refer to the exhibit. What needs to be done to allow these two routers to connect successfully?

Add a clock rate to S0/0/0 on R1.

Add an interface description to S0/0/1 on R2.

Page 9: Practice Final Ccna 4 Sem2- 16-1-2013

Change the serial interface on R2 to S0/0/0 so that it matches R1.

Change the IP address of S0/0/1 on R2 so that it is in the same subnet as R1.

19

Refer to the exhibit. A network technician notes that there are missing EIGRP routes in the

routing tables on each router in this network. Based on the exhibited output, what caused these

missing routes?

The holdtime values are mismatched.

The autonomous system numbers are mismatched.

The interfaces on the link between RouterC and RouterD are shut down.

An EIGRP neighbor relationship has not been established between RouterA and RouterB.

20

Page 10: Practice Final Ccna 4 Sem2- 16-1-2013

Refer to the exhibit. All routers are running RIPv1. The two networks 10.1.1.0/29 and 10.1.1.16/29

are unable to access each other. What can be the cause of this problem?

Because RIPv1 is a classless protocol, it does not support this access.

RIPv1 does not support discontiguous networks.

RIPv1 does not support load balancing.

RIPv1 does not support automatic summarization.

21

Refer to the exhibit. Routers R1 and R3 use different routing protocols with default administrative

distance values. All devices are properly configured and the destination network is advertised by both

protocols.

Which path will be used to transmit the data packets between PC1 and PC2?

Page 11: Practice Final Ccna 4 Sem2- 16-1-2013

The packets will travel via R2-R1.

The packets will travel via R2-R3.

The traffic will be load-balanced between two paths — via R2-R1 and via R2-R3.

The packets will travel via R2-R3, and the other path via R2-R1 will be retained as the backup path.

22

A router has EIGRP configured as the only routing protocol. In what way might EIGRP

respond if there is no feasible successor route to a destination network and the successor route fails?

It broadcasts hello packets to all routers in the network to re-establish neighbor adjacencies.

It sends queries to adjacent neighbors until a new successor route is found.

It immediately sends its entire routing table to its neighbors.

It will set the metric for the failed route to infinity.

23

A router has learned about a network through static and dynamic routing processes.

Which route will be used to reach network 192.168.168.0?

D 192.168.168.0/24 [90/2195456] via 192.168.200.1, 00:00:09, Ethernet0

O 192.168.168.0/24 [110/1012] via 192.168.200.1, 00:00:22, Ethernet0

R 192.168.168.0/24 [120/1] via 192.168.200.1, 00:00:17, Ethernet0

S 192.168.168.0/24 [1/0] via 192.168.200.1

24

Refer to the exhibit. A network designer is testing a prototype of WAN connections. All of the

Page 12: Practice Final Ccna 4 Sem2- 16-1-2013

routers in the exhibit are configured for OSPF routing. The design requires that the path between

routers A and D through ISP-A is the primary and the path through ISP-B serves as a backup.

The designer notices that router A has two equal-cost paths to the LAN on router D.

How can the designer correct this problem?

Issue a clock rate 2000000 interface command on S0/0/1 of router ISP-B.

Change the default OSPF reference bandwidth on router A.

Configure two static routes with administrative distances of 10.

Use the bandwidth command to change the default bandwidth on the link to router ISP-B.

25

Refer to the exhibit. Router R2 is configured properly and all interfaces are functional.

Router R1 has been installed recently.

Host A is unable to ping host

B.

Which procedure can resolve this problem?

Configure a static route on R1 using the IP address of the serial interface on R1.

Configure a default route on R1 with the exit interface Fa0/0 on R1.

Configure a static route on R1 using the IP address of S0/0/0 on R2.

Configure a default route on R1 using the IP address of Fa0/0 on R2.

26

Page 13: Practice Final Ccna 4 Sem2- 16-1-2013

Refer to the exhibit. To implement the RIPv2 protocol, the network administrator runs

the commands as displayed. However, the show ip protocol command fails to display any output.

How can the administrator solve the problem that is indicated by the lack of output from this command?

Include the default-information originate command.

Include the no auto-summary command.

Specify the network for which RIP routing has to be enabled.

Implement RIPv2 authentication in the network.

27

What are two functions of a router? (Choose two.)

It connects multiple IP networks.

It controls the flow of data via the use of Layer 2 addresses.

It determines the best path to send packets.

It manages the VLAN database.

It increases the size of the broadcast domain.

28

Page 14: Practice Final Ccna 4 Sem2- 16-1-2013

Refer to the exhibit. R1 and R2 are adjacent routers both running RIP. All interfaces on both routers

are correctly configured and operational. Both routers are configured to include all connected

interfaces in routing updates. R2 is not showing any routes from R1 in the routing table.

What is the likely cause?

The adjacent interfaces are passive.

The distance of 120 exceeds 15 hops.

R2 will not accept version 1 updates from R1.

Routes are being summarized by R1 but not by R2.

29

Refer to the exhibit. The network is using the RIPv2 routing protocol. If network 10.0.0.0

Page 15: Practice Final Ccna 4 Sem2- 16-1-2013

goes down, what mechanism will prevent Router1 from advertising false routing information back to

Router2?

triggered updates

poison reverse

holddown timers

split horizon

30

Refer to the exhibit. What destination address will RTB use to advertise LSAs?

224.0.0.5

224.0.0.6

10.1.7.17/28

172.16.1.1

172.16.2.1

255.255.255.255

31

Page 16: Practice Final Ccna 4 Sem2- 16-1-2013

Refer to the exhibit. The network has three connected routers: R1, R2, and R3.

The routes of all three routers are displayed. All routers are operational and pings are not blocked on this

network.

Which ping will fail?

from R1 to 172.16.1.1

from R1 to 192.168.3.1

from R2 to 192.168.1.1

from R2 to 192.168.3.1

32

The network shown in the diagram is having problems routing traffic. It is suspected that the problem

is with the addressing scheme. What is the problem with the addressing used in the topology?

The address assigned to the Ethernet0 interface of Router1 is a broadcast address for that subnetwork.

The subnetwork configured on the serial link between Router1 and Router2 overlaps

with the subnetwork assigned to Ethernet0 of Router3.

The subnetwork assigned to the Serial0 interface of Router1 is on a different subnetwork

Page 17: Practice Final Ccna 4 Sem2- 16-1-2013

from the address for Serial0 of Router2.

The subnetwork assigned to Ethernet0 of Router2 overlaps with the subnetwork assigned

to Ethernet0 of Router3.

33

Refer to the exhibit. What is the meaning of the highlighted value 2?

It is the administrative distance of the routing protocol.

It is the number of hops between R2 and the 192.168.8.0/24 network.

It is the value used by the DUAL algorithm to determine the bandwidth for the link.

It is the convergence time measured in seconds.

34

A network technician must reduce the amount of broadcast traffic on the network while

maintaining full connectivity between all different network segments.

Which device should the administrator deploy?

hub

router

Layer 2 switch

multiport repeater

35

Page 18: Practice Final Ccna 4 Sem2- 16-1-2013

Refer to the exhibit. R1 and R2 are unable to establish an adjacency.

What two configuration changes will correct the problem? (Choose two.)

Set a lower priority on R2.

Configure the routers in the same area.

Set a lower cost on R2 compared to R1.

Add a backup designated router to the network.

Match the hello and dead timers on both routers.

36

Using default settings, what is the next step in the router boot sequence after the IOS loads from flash?

Perform the POST routine.

Search for a backup IOS in ROM.

Load the bootstrap program from ROM.

Load the running-config file from RAM.

Locate and load the startup-config file from NVRAM.

37

Page 19: Practice Final Ccna 4 Sem2- 16-1-2013

Refer to the exhibit. Two routers are unable to establish an adjacency. What is the possible cause for this?

The two routers are connected on a multiaccess network.

The hello and dead intervals are different on the two routers.

They have different OSPF router IDs.

They have different process IDs.

38

Which two situations require the use of a link-state protocol? (Choose two.)

Fast convergence of the network is critical.

The network is very large.

The network administrator has limited knowledge to configure and troubleshoot routing protocols.

The network is a flat network.

The capacity of the router is low.

39

Page 20: Practice Final Ccna 4 Sem2- 16-1-2013

Refer to the exhibit. Host A is having problems accessing server A. All routers have the same

EIGRP configuration as router RTR_A. What should be done so that host A can access server A?

Add the command no auto-summary on all routers.

Change the network statements to include a wildcard mask.

Adjust the EIGRP hello timers to account for the network delay.

Add the command eigrp log-neighbor-changes on all routers.

40

Page 21: Practice Final Ccna 4 Sem2- 16-1-2013

Refer to the exhibit. What information can be determined from the highlighted output?

R1 is originating the route 172.30.200.32/28.

Automatic summarization is disabled.

The 172.30.200.16/28 network is one hop away from R1.

A classful routing protocol is being used.

41

Refer to the exhibit. What summarization should R2 use to advertise its LAN networks to R1?

172.16.0.0/24

172.16.4.0/22

172.16.4.0/23

172.16.4.0/24

42

What are two advantages of using a loopback interface on a router with OSPF enabled? (Choose two.)

A loopback interface has a much lower OSPF cost value by default.

A loopback interface provides a stable ID because the loopback interface cannot be shutdown.

A network administrator has more control over the DR/BDR election by using a loopback

interface over a physical interface.

A loopback interface can be configured with a higher bandwidth value than can a physical interface.

The loopback interface address overrides any physical interface address or configured router-id value.

43

What is one function of the bootstrap program during the router boot process?

loading Cisco IOS software

testing the router hardware

verifying the size of available RAM and flash

executing the commands in the configuration file

44

Page 22: Practice Final Ccna 4 Sem2- 16-1-2013

Refer to the exhibit. What information can be determined from the displayed output?

EIGRP packets are waiting to be sent to the neighbors.

The adjacencies between the routers are yet to be established.

The IP address 192.168.10.10 is configured at serial interface S0/0/1 of router R2.

Router R2 is receiving hello packets from a neighbor with the IP address 192.168.10.10

via the R2 S0/0/1 interface.

45

What is the function of the OSPF LSR packet?

It is used to confirm the receipt of LSUs.

It is used to establish and maintain adjacency with other OSPF routers.

It is used by the receiving routers to request more information about any entry in the DBD.

It is used to check the database synchronization between routers.

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