Suppose all ARP tables of all nodes in the network are empty. Consider that node A wants to send a frame to node B. How many ARP requests will have to be sent in order for A to send its frame to B in each of the following two scenarios:

a) Both nodes A and B belong to the same subnet.

b) Node A and node B belong to two different subnets that are linked by one router.

Give one disadvantage of Taking Turns MAC protocols when compared to Random Access MAC protocols.

Describe one difference between Taking Turns MAC protocols and Random Access MAC protocols.