Tuesday, March 4, 2014

CCNA 2 Final Exam Answers -2014

1. Which two statements are true for link-state routing protocols? (Choose two.)
Routers that run a link-state protocol can establish a complete topology of the network.
The shortest path first algorithm is used.

2. Refer to the exhibit. RouterA and RouterB cannot successfully exchange EIGRP routes. What is the problem?
The autonomous system numbers do not match.

3. Refer to the exhibit. Based on the partial output in the exhibit, why can users establish a console connection to this router without entering a password?
The login command was not entered on the console line.

4. Refer to the exhibit. The network administrator has run the following command on R1.
R1(config)# ip route 192.168.2.0 255.255.255.0 172.16.1.2
What is the result of running this command?
Traffic for network 192.168.2.0 is forwarded to 172.16.1.2.


5. Refer to the exhibit. What does the state "FULL/ -" indicate?
The router with router ID 10.112.0.34 and RouterA are on a point-to-point network.

6. 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?
S 192.168.168.0/24 [1/0] via 192.168.200.1

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?
Serial0/0/0

8. When would the IOS image held in ROM be used to boot the router?
when the running configuration directs the router to do this

9. Refer to the exhibit. On the basis of the show running-config output, which option correctly reflects the routes that will be listed in the R2 routing table?
Answer Option 4

10. Refer to the exhibit. The hosts on the R1 LAN are unable to access the Internet. What is incorrectly configured?
the IP address of the S0/0/0 interface at R1

11. Refer to the exhibit. A ping from R1 to 10.1.1.2 is successful, but a ping from R1 to 192.168.2.0 fails. What is the cause of this problem?
The static route for 192.168.2.0 is incorrectly configured.

12. What is a characteristic of classful routing?
support for VLSM

13. Which three statements are true regarding the encapsulation and de-encapsulation of packets when traveling through a router? (Choose three.)
The router modifies the TTL field, decrementing it by one.
The router maintains the same source and destination IP.
The router changes the source physical address to the physical address of the exit interface.

14. Which routing protocol maintains a topology table separate from the routing table?
EIGRP

15. Refer to the exhibit. The 10.4.0.0 network fails. What mechanism prevents R2 from receiving false update information regarding the 10.4.0.0 network?
split horizon

16. Which two router component and operation pair are correctly described? (Choose two.)
NVRAM – stores the configuration file
POST – runs diagnostics on hardware modules

17. Which multicast address does EIGRP use to send hello and updates packets?
224.0.0.10

18. Refer to the exhibit. The network consists of hundreds of routers branched from connected regional distribution sites using single area OSPF. Recent network failures caused packet flooding and route recalculations in all branch networks. What should the engineer do to minimize the effect of the routing instabilities?
Change the topology to a heirarchical design which puts each branch network in its own area.

19. A network administrator is using an application that is monitoring packets on the network and sees an EIGRP update packet. What is the purpose of the update packet?
The packet is used to propagate routing information within the EIGRP network.

20. A router boots and enters setup mode. What is the reason for this?
The configuration file is missing from NVRAM.

21. Which of the following are required when adding a network to the OSPF routing process configuration? (Choose three.)
network address
wildcard mask
area ID

22. Which prompt is used to allow a user to change the IP address of an interface on a router?
Router(config-if)#

23. Refer to the exhibit. Which path will traffic from the 172.16.1.0/24 network take to get to the 10.0.0.0/24 network?
It will load balance the traffic between ADC and ABC

24. Which statement correctly describes a feature of RIP?
RIP uses only one metric—hop count— for path selection.

25. Refer to the exhibit. R1 and R2 are both configured with RIPv1. Beginning from global configuration mode, what comand or commands will eliminate RIP updates on the Ethernet segment of R2?
R2# configure terminal
R2(config)# router rip
R2(config-router)# passive-interface FastEthernet0/0

26. In a complex lab test environment, a router has discovered four paths to 192.168.1.0/24 via the use of the RIP routing process. Which route will be installed in the routing table after the discovery of all four paths?
R 192.168.1.0/24 [120/1] via 192.168.100.1, 00:00:17, Serial0/0/1

27. Which two statements are true about the router ID in a single area OSPF network? (Choose two.)
The router ID is used to uniquely identify each router in the OSPF routing domain.
If no loopback interfaces are configured, the router chooses the highest active IP address of any of its physical interfaces.

28. Which two statements about routing protocols are accurate? (Choose two.)
OSPF supports VLSM.
EIGRP supports discontiguous network designs.

29. Refer to the exhibit. Which IP address and subnet mask can be configured on host H1 if it is to communicate with the network?
172.16.1.14 255.255.255.240

30. Refer to the exhibit. What will happen when the router reloads?
It will attempt to load the start-up configuration file that is stored in NVRAM.

31. You have been asked to explain converged networks to a trainee. How would you accurately describe a converged network?
A network is converged after all routers share the same information, calculate best paths, and update their routing tables.

32. A router needs an IOS upgrade. Which component must be checked to make sure it meets the requirement for the new IOS?
flash

33. Refer to the exhibit. What information can be determined from the displayed output?
Router R2 is receiving hello packets from a neighbor with the IP address 192.168.10.10 via the R2 S0/0/1 interface.

34. Which default EIGRP configuration must be modified to allow an EIGRP router to advertise subnets that are configured with VLSM?
autosummarization

35. Which protocol is used by EIGRP to deliver and receive update packets?
RTP

36. Refer to the exhibit. Which option will provide the configuration that is needed for router R1 to dynamically learn routes to the 192.168.100.16/28, 192.168.100.32/28, and 192.168.100.48/28 subnetworks?
with a routing protocol

37. A network administrator is setting up a new router with a device name of Admin, an encrypted password of cangetin, and the IP address 192.168.1.22/29 assigned to the first FastEthernet interface. Which command sequence correctly configures this router?
Router(config)# hostname Admin
Admin(config)# enable secret cangetin
Admin(config)# interface fa0/0
Admin(config-if)# ip address 192.168.1.22 255.255.255.248

38. All routers in a network are configured in a single OSPF area with the same priority value. No loopback interface has been set on any of the routers. Which secondary value will the routers use to determine the router ID?
The highest IP address among the active FastEthernet interfaces that are running OSPF will be used.

39. What is the purpose of the TTL field within an IP packet header?
limits the period of time or number of hops a packet can traverse through the network before it should be discarded

40. Refer to the exhibit. Host A is unable to access the Internet. What is the reason for this?
The Fa0/1 interfaces of the two routers are configured for different subnets.

41. 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?
R2 will not accept version 1 updates from R1.

42. 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 S0/0/0 on R2.

43. Refer to the exhibit. All routers are configured to use the EIGRP routing protocol with default settings, all routes are advertised on all routers, and the network is fully converged. Which path will the data take to travel between 172.16.1.0/24 and 192.168.100.0/24?
It will travel via A, F, E, D, and C.

44. Refer to the exhibit. A technician has configured the interfaces on the Router, but upon inspection discovers that interface FastEthernet0/1 is not functioning. Which action will most likely correct the problem with FastEthernet0/1?
The no shutdown command needs to be added to the interface configuration.

45. 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.

46. Refer to the exhibit. Routers R1 and R2 are directly connected through a FastEthernet link but cannot form a neighbor adjacency. What could resolve the problem?
The hello and dead timers must be configured with the same values on both routers.

47. Refer to the exhibit. If the EIGRP routing protocol is used throughout the network, which IP address and mask prefix should be sent by router R1 to the Edge router as a result of manual summarization of LANs A, B, C, and D?
192.168.4.0/22

48. Refer to the exhibit. Which summarization should R1 use to advertise its networks to R2?
192.168.0.0/22

49. Refer to the exhibit. The command ip route 0.0.0.0 0.0.0.0 S0/0/0 is run on router R2. What are the two results of this command? (Choose two.)
A static route will be updated in the routing table.
The route will be specified as the default route for all networks not defined in the routing table.

50. What is the function of the OSPF LSU packet?
used to announce new OSPF information and to reply to certain types of requests

51. Which of the following are primary functions of a router? (Choose two.)
packet switching
path selection

52.Refer to the exhibit. The interfaces of all routers are configured for OSPF area 0. R3 can ping R1, but the two routers are unable to establish a neighbor adjacency. What should the network administrator do to troubleshoot this problem?

Check the hello and dead intervals between the routers.




CCNA 2 Final Answers

No comments:

Post a Comment