1. Why do we need both MAC address and IP addressfor a network interface? Why not just one address?
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2. Why are MAC addresses f at but IP addresseshierarchical?
3. Why is netmask used inside a router and a host?
4. Routing vs. forwarding? (Compare their type ofwork and the algorithm used.)
5. Why could there be multiple matched IP prefixesin a router’s table lookup? (Explain what networkconfigurations could result in this.)