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CCNP Practical Studies: Troubleshooting by Donna L. Harrington

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Chapter 3's Review Questions

1: In the RIP scenario, why were you successful with using RIPv2 rather than RIPv1?
A1: Answer: RIPv2 is classless, and RIPv1 is classful. Classless routing protocols such as RIPv2, EIGRP, OSPF, and IS-IS support VLSM and summarization. All routing protocols support summarization, but the classful ones do that in a fixed manner at the class boundary.
2: A Cisco router maintains ARP entries much longer than most PCs. How can you remove all entries from the ARP cache on a Cisco router? It would be less detrimental to all to just remove an entry associated with a given interface. Can you do that on a router? On a Windows-based PC?
A2: Answer: On a router, clear arp does not truly clear the table; instead, it refreshes ...

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