CCNA – OSPF Questions

10 Questions | Total Attempts: 4842

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CCNA  OSPF Questions

. In the world of networking, the Open Shortest Path First (OSPF) routing protocol for IP networks uses a link state routing algorithm and is classed as an interior gateway protocol. Further your knowledge of the OSPF for your CCNA certification by answering the following questions.


Questions and Answers
  • 1. 
    Which characteristics are representative of a link-state routing protocol? (Choose three)
    • A. 

      Provides common view of entire topology

    • B. 

      Exchanges routing tables with neighbors

    • C. 

      Calculates shortest path

    • D. 

      Utilizes event-triggered updates

    • E. 

      Utilizes frequent periodic updates

  • 2. 
    Which statements describe the routing protocol OSPF? (Choose three
    • A. 

      It supports VLSM.

    • B. 

      It is used to route between autonomous systems.

    • C. 

      It confines network instability to one area of the network.

    • D. 

      It increases routing overhead on the network.

    • E. 

      It allows extensive control of routing updates

    • F. 

      It is simpler to configure than RIPv2.

  • 3. 
    A network administrator is trying to add a new router into an established OSPF network. The networks attached to the new router do not appear in the routing tables of the other OSPF routers. Given the information in the partial configuration shown below, what configuration error is causing this problem?
    • A. 

      The process id is configured improperly.

    • B. 

      The OSPF area is configured improperly.

    • C. 

      The network wildcard mask is configured improperly.

    • D. 

      The network number is configured improperly.

    • E. 

      The AS is configured improperly.

    • F. 

      The network subnet mask is configured improperly.

  • 4. 
    A network associate has configured OSPF with the command:City(config-router)# network 192.168.12.64 0.0.0.63 area 0After 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

  • 5. 
    What is the default maximum number of equal-cost paths that can be placed into the routing of a Cisco OSPF router?
    • A. 

      16

    • B. 

      2

    • C. 

      Unlimited

    • D. 

      4

  • 6. 
    Which two statements describe the process identifier that is used in the command to configure OSPF on a router? (Choose two)Router(config)# router ospf 1
    • A. 

      All OSPF routers in an area must have the same process ID.

    • B. 

      Only one process number can be used on the same router.

    • C. 

      Different process identifiers can be used to run multiple OSPF processes

    • D. 

      The process number can be any number from 1 to 65,535.

    • E. 

      Hello packets are sent to each neighbor to determine the processor identifier.

  • 7. 
    Why do large OSPF networks use a hierarchical design? (Choose three)
    • A. 

      To confine network instability to single areas of the network.

    • B. 

      To reduce the complexity of router configuration

    • C. 

      To speed up convergence

    • D. 

      To lower costs by replacing routers with distribution layer switches

    • E. 

      To decrease latency by increasing bandwidth

    • F. 

      To reduce routing overhead

  • 8. 
    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 1

    • B. 

      Router(config)#router ospf 0

    • C. 

      Router(config)#router ospf area 0

    • D. 

      Router(config-router)#network 192.168.16.0 0.0.0.255 area 0

    • E. 

      Router(config-router)#network 192.168.16.0 0.0.0.255 0

    • F. 

      Router(config-router)#network 192.168.16.0 255.255.255.0 area 0

  • 9. 
    Refer to the exhibit. Given the output for this command, if the router ID has not been manually set, what router ID will OSPF use for this RouterD?
    • A. 

      10.1.1.2

    • B. 

      10.154.154.1

    • C. 

      172.16.5.1

    • D. 

      192.168.5.316

  • 10. 
    What is the default administrative distance of OSPF?
    • A. 

      120

    • B. 

      100

    • C. 

      90

    • D. 

      110

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