a) Assume that packet size is 1KB, the round-trip-time is 25ms, and the bandwidth of the channel is 1200KB/s. What is the throughput of stop-and-wait? b) What is the minimum number of logical channels in the concurrent-logical channels protocol that are needed to ensure we maximize the throughput c) What if instead of using the number of logical channels you gave in b), we use twice that number. What will happen to the throughput? Briefly argue why.