both questions

9. We want to establish a reliable communication channel from node A to node B. We determine that exactly 16 frames "fit" on the channel from A to B (one way). If we use a Go-Back-N sliding window protocol, what is the minimum number of bits needed in sequence numbers to enable node A to send continuously? (You may ignore overhead for frame headers and ACK transmission time; do not ignore ACK propagation time.) a. 4 b. 5 dl. e. none of the above c. 6 10. We want to establish a reliable communication channel from node A to node B. We determine that exactly 16 frames "fit on the channel from A to B (one way). If we use a Selective Repeat sliding window protocol with 5-bit sequence numbers, what is the maximum utilization of the channel, if the loss rate L 0.7 (probability that the frame or its ACK is lost). (You may ignore overhead for frame headers and ACK transmission time do not ignore ACK propagation time.) a. 20 = 0.35 b, T) = 0.7 C. 0.145 d. 0282 e. none of the above