Q. 19 A and B are the only two stations on an Ethernet. Each has a steady queue of
frames to send. Both A and B attempt to transmit a frame, collide, and A wins
the first backoff race, At the end of this successful transmission by A, both A
and B attempt to transmit and collide. The probability that A wins the second
backoff race is
(A) 0.5
(B) 0.625
(C) 0.75
(D) 1.0
Answer: (B)
Explanation:
