Q2. Let A and B be two stations attempting to transmit on an Ethernet. Each has a steady queue of frames ready to send; A's frames will be numbered A1, A2, and so on, and B's similarly. Let T : 51.2 ?s be the exponential backoff base unit. Suppose A and B simultaneously attempt to send frame 1, collide, and have to attempt a retransmission using exponential binary backoff strategy The binary exponential backoff strategy is as follows After k collisions, the kth transmission of each colliding station is delayed by an amount equal to an integer r times the base backoff time. The integer r is selected with equal probability from the set of 2 integers (0, 1, 2k - 1) Determine the probability that the first retransmission is unsuccessful