Question: Suppose that the expected frame length on a link is 1000 bits and the standard deviation is 500 bits.
(a) Find the expected time to transmit a frame on a 9600-bps link and on a 50,000-bps link.
(b) Find the expected time and standard deviation of the time required to transmit 106 frames on each of the links above (assume that all frame lengths are statistically independent of each other).
(c) The rate at which frames can be transmitted is generally defined as the reciprocal of the expected transmission time. Using the result in part (b), discuss whether this definition is reasonable.