7. The distance from earth to a distant planet is approximately 9 x 1010 m. What is the channel utilization if a stop-and-wait protocol is used for frame transmission on a 64 Mbps point-to-point link? Assume that the frame size is 32 KB and the speed of light is 3 x 108 m/s. We suppose a sliding window protocol is used instead. For what send window size will the link utilization be 100%. You may ignore the protocol processing times at the sender and receiver. Proof is required. State the first one, and the second one. Solution