CCNA FAQ: Distance Vector Routing Protocols
Q1. What are the mitigation methods distance vector routing protocols use to avoid routing loops?
Q2. What are the characteristics of RIP?
Q3. What additional features are present in RIPv2 that are not present in RIP?
Q4. What is the purpose of the passive-interface command?
Q5. What are the fundamental configuration steps for RIPv2?
Q6. Given the following output, which of the following is a true statement?
A. The 172.16.0.0 has an administrative distance of 1.
B. The 220.127.116.11 network is in a hold-down state.
C. The configuration for this router to advertise RIP should have a network 172.16.0.0 and a network 18.104.22.168 statement.
D. None of the above
Q7. Given the following output, which of the following statements is false regarding the 0.0.0.0/0 network?
A. The 0.0.0.0 network was statically configured in this router.
B. The gateway of last resort is the 192.168.1.9 router.
C. The default route was advertised to the local router via RIP.
D. The default route was automatically redistributed in Router 192.168.1.9.
Q8. Based on the following output, which network may not show up in the routing table?
RouterA#debug ip rip
RIP protocol debugging is on
00:26:27: RIP: received v1 update from 192.168.1.6 on Serial0/0
00:26:27: 192.168.1.8 in 12 hops
00:26:27: 192.168.1.12 in 15 hops
00:26:27: 172.17.0.0 in 14 hops
00:26:27: 172.18.0.0 in 16 hops
Q9. Which two commands enable a distance vector routing protocol to be classless?
A. version 2
C. no auto-summary
D. router classless
Q10. Which of the following is a possible reason for the following debug ip rip output?
*Aug 10 02:02:24.023: RIP: sending v2 update to 22.214.171.124 via Serial0/0/0 (192.168.1.5)
*Aug 10 02:02:24.023: RIP: build update entries
*Aug 10 02:02:24.023: 172.16.0.0/16 via 0.0.0.0, metric 1, tag 0
*Aug 10 01:57:50.823: RIP: received packet with MD5 authentication
*Aug 10 01:57:50.823: RIP: ignored v2 packet from 192.168.1.6 (invalid authentication)
A. The interface that received the update is running as a passive interface.
B. Both routers are not configured for RIPv2.
C. The key strings do not match.
D. Split horizon will not allow the update to be received because that same network was sent on the same interface.
Q11. Which of the following is not a mechanism to avoid routing loops?
A. Split horizon
B. Update authentication
C. Hold-down timers
D. Route poisoning
Q12. Given the following output of a show ip protocols, which of the following commands was not configured on this router?
A. version 2
B. ip rip authentication key-chain shorty
C. maximum-paths 6
D. network 192.168.0.0
Q13. Which command should you implement before doing any debug commands?
A. show running-config
B. show processes
C. undebug all
D. copy running-config startup-config
Q14. Given the following output of a debug ip rip, which of the following is true?
00:57:27: RIP: received v2 update from 192.168.1.6 on Serial0/0
00:57:27: 192.168.1.8/30 via 0.0.0.0 in 1 hops
00:57:27: 192.168.1.12/30 via 0.0.0.0 in 1 hops
00:57:27: 172.17.0.0/16 via 0.0.0.0 in 1 hops
00:57:27: 172.18.0.0/16 via 0.0.0.0 in 1 hops
A. The routing updates are broadcast to their neighbors.
B. The router automatically summarizes these networks.
C. Networks 172.17.0.0 and 172.18.0.0 have an infinite metric.
D. The no auto-summary command is used in RIPv2.
Q15. Which characteristic does not go with its respective routing protocol?
A. Multicasts updates—RIP
B. 180 invalid timer—RIP
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