Networking - IP Routing Question and Answer

Networking - IP Routing Question and Answer
1. Which of the following statements are true regarding the command ip route 172.16.4.0 255.255.255.0 192.168.4.2?

    The command is used to establish a static route.
    The default administrative distance is used.
    The command is used to configure the default route.
    The subnet mask for the source address is 255.255.255.0.
  • 1 and 2
  • 2 and 4
  • 3 and 4
  • All of the above
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2. Which command displays RIP routing updates?
  • show ip route
  • debug ip rip
  • show protocols
  • debug ip route
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3. Which statement is true regarding classless routing protocols?

    The use of discontiguous networks is not allowed.
    The use of variable length subnet masks is permitted.
    RIPv1 is a classless routing protocol.
    IGRP supports classless routing within the same autonomous system.
    RIPv2 supports classless routing.
  • 1, 3 and 5
  • 3 and 4
  • 2 and 5
  • None of the above
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4. What is split horizon?
  • Information about a route should not be sent back in the direction from which the original update came.
  • It splits the traffic when you have a large bus (horizon) physical network.
  • It holds the regular updates from broadcasting to a downed link.
  • It prevents regular update messages from reinstating a route that has gone down.
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5. What command is used to stop RIP routing updates from exiting out an interface but still allow the interface to receive RIP route updates?
  • Router(config-if)# no routing
  • Router(config-if)# passive-interface
  • Router(config-router)# passive-interface s0
  • Router(config-router)# no routing updates
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6. Two connected routers are configured with RIP routing. What will be the result when a router receives a routing update that contains a higher-cost path to a network already in its routing table?
  • The updated information will be added to the existing routing table.
  • The update will be ignored and no further action will occur.
  • The updated information will replace the existing routing table entry.
  • The existing routing table entry will be deleted from the routing table and all routers will exchange routing updates to reach convergence.
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7. You type debug ip rip on your router console and see that 172.16.10.0 is being advertised to you with a metric of 16. What does this mean?
  • The route is 16 hops away.
  • The route has a delay of 16 microseconds.
  • The route is inaccessible.
  • The route is queued at 16 messages a second.
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8. The Corporate router receives an IP packet with a source IP address of 192.168.214.20 and a destination address of 192.168.22.3. Looking at the output from the Corporate router, what will the router do with this packet?

Corp#sh ip route
[output cut]
R    192.168.215.0 [120/2] via 192.168.20.2, 00:00:23, Serial0/0
R    192.168.115.0 [120/1] via 192.168.20.2, 00:00:23, Serial0/0
R    192.168.30.0 [120/1] via 192.168.20.2, 00:00:23, Serial0/0
C    192.168.20.0 is directly connected, Serial0/0
C    192.168.214.0 is directly connected, FastEthernet0/0
  • The packet will be discarded.
  • The packet will be routed out the S0/0 interface.
  • The router will broadcast looking for the destination.
  • The packet will be routed out the Fa0/0 interface.
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9. If your routing table has a static, a RIP, and an IGRP route to the same network, which route will be used to route packets by default?
  • Any available route
  • RIP route
  • Static route
  • IGRP route
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10. What is route poisoning?
  • It sends back the protocol received from a router as a poison pill, which stops the regular updates.
  • It is information received from a router that can't be sent back to the originating router.
  • It prevents regular update messages from reinstating a route that has just come up.
  • It describes when a router sets the metric for a downed link to infinity.
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