(Solved): 1. Can two hosts on two different networks have the same Data Link layer address? (In other words, ...

1. Can two hosts on two different networks have the same Data Link layer address? (In other words, if two network interfaces were accidentally given the same Data Link address, and the host computers with those interfaces were placed onto two different LANs separated by a WAN, can those two hosts still communicate with each other?) Briefly explain why or why not. 2. What is the size of an ARP packet (not including the Data Link frame header!) when the protocol is IPv4 and the hardware is Ethernet? (Hint: add up the size of the fields in the packet, keeping in mind that a IPv 4 network address is 4 bytes long and an Ethernet address is 6 bytes long.) 3. Assume we have an internet (a small, private internet) in which all hosts are connected in a fullyconnected mesh topology. Would we need routers in this internet? Explain. 4. In the previous problem, would we still need both the Network and Data Link layers? Explain.