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Cisco ICND2 Foundation Learning Guide: Implementing an EIGRP Solution

Chapter Description

To assist in your studies for the ICND2 exam, this chapter reviews the basics of dynamic routing and examines the operation, configuration, and troubleshooting of EIGRP for IPv4 and IPv6.

Review Questions

Use the questions here to review what you learned in this chapter. The correct answers are located in Appendix A, “Answers to Chapter Review Questions.”

  1. In which two ways does the configuration of EIGRP on IPv6 differ from the configuration of EIGRP on IPv4? (Choose two.) (Source: “EIGRP for IPv6 Command Syntax”)

    1. The network command is changed into the ipv6 network command for EIGRP for IPv6.
    2. EIGRP for IPv6 can only be explicitly enabled with the no shutdown command. There is no network command.
    3. EIGRP for IPv6 is configured per interface on Cisco routers.
    4. If you run EIGRP for IPv6, you have to run EIGRP for IPv4; but if you run EIGRP for IPv4, you do not need to run EIGRP for IPv6.
  2. Which command can you use to show if EIGRP for IPv6 is running? (Source: “EIGRP for IPv6 Command Syntax”)

    1. show ipv6 interface
    2. show ipv6 protocol
    3. show ipv6 eigrp dual
    4. show eigrp ipv6 dual
  3. Which is not a valid IPv6 EIGRP command? (Source: EIGRP Basic Configuration)

    1. show ipv6 eigrp topology
    2. show ipv6 route eigrp
    3. show ipv6 eigrp status
    4. show ipv6 eigrp interfaces
  4. Which of the following applies to EIGRP AS numbers? (Source: “Troubleshooting EIGRP Neighbor Issues”)

    1. Need to match between EIGRP neighbors only
    2. Need to match OSPF area numbers if routes are being redistributed
    3. Need to match between all EIGRP routers in the topology
    4. Don’t need to match at all
    5. Must match BGP AS numbers
  5. Which command is most useful for determining if an EIGRP neighbor relationship is not established due to a connectivity issue? (Source: “Troubleshooting EIGRP Neighbor Issues”)

    1. show ip protocols
    2. show ip eigrp neighbors
    3. show eigrp topology
    4. show ip protocols
    5. show ip interfaces brief
  6. Which of the following applies to an EIGRP passive interface? (Source: “Troubleshooting EIGRP Neighbor Issues”)

    1. Only makes a neighbor relationship if a neighbor that is on a directly connected subnet initiates the connection
    2. Can be seen by the show ip eigrp passive-interfaces command
    3. Can be seen by the show ip protocols command
    4. Can have a different AS number assigned to it
  7. Route filtering can be done on which of the following? (Source: “Issues Caused by Route Filtering”)

    1. Inbound routes only
    2. Outbound routes only
    3. Either inbound or outbound routes
  8. Where is automatic summarization performed? (Source: Classful Routing Versus Classless Routing)

    1. At any contiguous network block
    2. At classful network boundaries
    3. Can be performed on the same classful boundary on more than one network segment at the same time
    4. At the intersection of the classful and classless routing protocol.
  9. Which command correctly specifies that network 10.0.0.0 is directly connected to a router that is running EIGRP and should be advertised? (Source: “Implementing EIGRP for IPv6”)

    1. Router(config)# network 10.0.0.0
    2. Router(config)# router eigrp 10.0.0.0
    3. Router(config-router)# network 10.0.0.0
    4. Router(config-router)# router eigrp 10.0.0.0
  10. Connect each EIGRP feature on the left with its description on the right. (Source: “Implementing EIGRP for IPv6”)

    1.

    Reduced bandwidth usage

    a.

    EIGRP algorithm by which EIGRP achieves rapid convergence

    2.

    Classless routing

    b.

    A direct consequence of using partial updates

    3.

    Load balancing

    c.

    EIGRP knows two types: equal and unequal

    4.

    DUAL

    d.

    Routing mask is advertised for each destination network

  11. Which two criteria does EIGRP use by default to calculate its metric? (Choose two.) (Source: “Implementing EIGRP for IPv6”)

    1. Bandwidth
    2. Reliability
    3. Load
    4. MTU
    5. Delay
  12. Connect each term on the left to its description on the right. (Source: “Implementing EIGRP for IPv6”)

    1.

    Feasible distance

    a.

    The best EIGRP metric for an EIGRP neighbor to reach a particular network

    2.

    Advertised distance

    b.

    The end-to-end metric that is transmitted from the router for a remote network

    3.

    Administrative distance

    c.

    The end-to-end EIGRP metric from a router to reach a particular network

    4.

    Composite metric

    d.

    Used to rate the trustworthiness of each routing information source

  13. Which letter is used to signify that a route in the show ip routes command originates from EIGRP? (Source: “Verification of EIGRP Configuration and Operation”)

    1. A
    2. D
    3. E
    4. L
  14. Which is not a valid command? (Source: “Verification of EIGRP Configuration and Operation”)

    1. show ip eigrp dual process as_number
    2. show ip eigrp interfaces
    3. show ip route
    4. show ip eigrp neighbors
  15. All routing protocols support uneven-cost load balancing. True or False? (Source: “Load Balancing with EIGRP”)
  16. Which interface(s) on the Branch router does not have an EIGRP neighbor? (Source: “Verification of EIGRP Configuration and Operation”)

    1. Gigabit0/0
    2. Gigabit0/1
    3. Gigabit0/2
    4. Gigabit0/3
    5. All interfaces have an EIGRP neighbor
    6. No interfaces have an EIGRP neighbor

  17. Which two choices are not a characteristic of EIGRP? (Source: “Dynamic Routing Overview”)

    1. Determines distance to any destination in the network
    2. Uses an algorithm called DUAL
    3. Uses an algorithm called SPF
    4. Has a map of every destination in the network
  18. Which command would you use to investigate which interfaces are enabled for the EIGRP routing process? (Source: “Troubleshooting EIGRP Neighbor Issues”)

    1. show ip eigrp interfaces
    2. show ip eigrp neighbors
    3. show ip interfaces brief
    4. show eigrp enabled interfaces
  19. Which of the following statements are false? (Source: “Troubleshooting EIGRP for IPv6”)

    1. In per-interface configuration at system startup, if IPv6 EIGRP has been configured on an interface, then the IPv6 EIGRP protocol may start running before any EIGRP router mode commands have been executed.
    2. An EIGRP for IPv6 protocol instance does not need a router ID before it can start running. The router ID can be added later.
    3. When using a passive-interface configuration, EIGRP for IPv6 does not need to be configured on the interface that is made passive.
    4. EIGRP for IPv6 is not directly configured on the interfaces over which it runs. In the network statement in EIGRP for IPv6, the interface must be explicitly defined.
    5. EIGRP for IPv6 has a shutdown feature. The routing process must be in no shutdown mode in order to start running.
    6. EIGRP for IPv6 provides route filtering using the distribute-list prefix-list command. Use of the route-map command is not supported for route filtering with a distribute list.
    7. EIGRP uses the advanced DUAL algorithm that maintains a database of every node on the network.
  20. Which is not a basic component of EIGRP? (Source: “EIGRP Features and Function”)

    1. Topology database
    2. DUAL algorithm
    3. Protocol-dependent modules
    4. Hello packets
  21. Which is not a valid dynamic routing protocol classification? (Source: “Dynamic Routing Protocols”)

    1. Hybrid
    2. Distance vector
    3. Link state
  22. Connect each term on the left with its definition on the right. (Source: “Dynamic Routing Review”)

    1.

    Distance vector protocol

    a.

    Keeps track of all links and routers in the network

    2.

    EGP

    b.

    Internal routing for a single routing domain

    3.

    Link-state protocol

    c.

    Tracks the network path on a hop-by-hop basis

    4.

    IGP

    d.

    Connects routing domains