17. How does the count-to-in nity problem occur inRIP?
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18. RIP vs. OSPF? (Compare their network stateinormation and route computation.)
19. Distance vector routing vs. link state routing?(Compare their routing message complexity,computation complexity, speed o convergence,and scalability.)
20. RIP vs. BGP? (Summarize their similarities anddierences.)
21. Why do RIP, OSPF, and BGP run over UDP, IP,and TCP, respectively?