14. What is the difference between dynamic arp table entries and static arp table entries?15. What four functions do all routers perform?16. What database does a router consult before determining the most efficient path for delivering a message?17. Manually modifying a routing table can cause messages to get stuck hopping between a limited number of routers. What is this problem called?18. Give three examples of routing metrics used by routers to determine the best of various available routing paths.19. What kind of web site allows you to remotely collect network routing information back to your actual location?20. List three interior gateway protocols. (igps).
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Black hole,Transmission Control Protocol,routing protocol,arp table entries