19. Distance vector routing vs. link state routing?(Compare their routing message complexity,computation complexity, speed o convergence,and scalability.)
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20. RIP vs. BGP? (Summarize their similarities anddierences.)
21. Why do RIP, OSPF, and BGP run over UDP, IP,and TCP, respectively?
22. Can you estimate the number o routing table entriesin intra-AS and inter-AS routers? (Estimate the rangeor order o magnitude.)
23. How do routing protocols in zebra exchangemessages with other routers and update routingtables in the kernel?