4.0 CCNA 2: Routing Protocols and Concepts:Module 9

1. In which of the following tables does the EIGRP DUAL algorithm store the primary route to a destination? (Choose two.)

2. On a router running EIGRP, what database would maintain a list of feasible successors?
topology table

3. Refer to the exhibit. Network goes down. What type of packet does Router2 immediately send to Router1 and Router3?
unicast update packets to and

4. What two actions will the EIGRP DUAL FSM take if a link to a network goes down? (Choose two.)
query neighbors for a new route
search topology table for a feasible successor

5. In the command router eigrp 20, what is the purpose of the number 20?
identifies the autonomous system number this EIGRP process will advertise

6. Refer to the exhibit. This is the debug output from 2 directly connected EIGRP routers. They are not forming an adjacency. What is the cause?

7. Refer to the exhibit. Based on the output of show ip eigrp neighbors, what are two possible problems with adjacencies between Router1 and Router2? (Choose two.)
The routers are configured with different EIGRP process IDs.
The serial interfaces for both routers are in different networks.

8. By default, which two metrics are used by EIGRP to determine the best path between networks?

9. What information is maintained in the EIGRP topology database for a destination route? (Choose three.)
the routing protocol
the feasible distance of the route
the route cost as advertised by the neighboring router

10. Which of the following statements describes the bounded updates used by EIGRP?
Partial updates are sent only to routers that need the information.

11. Refer to the exhibit. What is indicated by the P at the beginning of the topology entry?
the route is in a stable state

12. Which of the following types of routes will be denoted by EX in EIGRP routing table entries? (Choose two.)
routes learned from other routing protocols
EIGRP routes that originate in different autonomous systems

13. Host in the network illustrated is unable to ping host How must EIGRP be configured to enable connectivity between the two hosts? (Choose two.)
R1(config-router)# no auto-summary
R2(config-router)# no auto-summary

14. Which two statements describe characteristics of EIGRP? (Choose two.)
EIGRP is a distance vector routing protocol.
EIGRP supports classless routing and VLSM.

15. Refer to the exhibit. In the topology table, what do the numbers 3011840 and 3128695 represent?
the total metric for that network as advertised by the EIGRP neighbor

16. Refer to the exhibit. EIGRP is the only routing protocol enabled on this network. No static routes are configured on this router. What can be concluded about network from the exhibited output?
Packets that are destined for will be forwarded to

17. Refer to the exhibit. All interfaces have been configured with the bandwidths that are shown in the exhibit. Assuming that all routers are using a default configuration of EIGRP as their routing protocol, what path will packets take from the network to the network?

18. What administrative distance would a router assign to a default route in EIGRP that is learned from a source external to the autonomous system?

19. Refer to the exhibit. The company is using EIGRP with an autonomous system number of 10. Pings between hosts on networks that are connected to router A and those that are connected to router B are successful. However, users on the network are unable to reach users on the network. What is the most likely cause of this problem?
The routers are not configured in the same EIGRP routing domain.

20. The show ip eigrp topology command output on a router displays a successor route and a feasible successor route to network In order to reduce processor utilization, what does EIGRP do when the primary route to this network fails?
The backup route to network is installed in the routing table.

21. Which term defines a collection of networks under the administrative control of a single entity that presents a common routing policy to the Internet?
autonomous system

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