Consider sending a large file of F bits from Host A to Host B. There are three links (and two switches) between A and B, and the links are uncongested (that is, no queuing delays). Host A segments the file segments of S bits each and adds 60 bits of header to each segment, forming packets of L = 60 + S bits. The propagation delay is p microseconds/kilometer. Consider the following distances: A to X =d1 km; X to Y = d2 km; Y to B = d3 km. Consider the following link bandwidths: Link A-X capacity = R1 bps; Link X-Y capacity = R2 bps; Link Y-B capacity = R3 bps. Q1. Find the value of S that minimizes the delay of moving the file from Host A to Host B. (Ignore propagation delay)

Consider sending a large file of F bits from Host A to Host B. There are three links (and two switches) between A and B, and the links are uncongested (that is, no queuing delays). Host A segments the file segments of S bits each and adds 60 bits of header to each segment, forming packets of L = 60 + S bits. The propagation delay is p microseconds/kilometer. Consider the following distances: A to X =d1 km; X to Y = d2 km; Y to B = d3 km. Consider the following link bandwidths: Link A-X capacity = R1 bps; Link X-Y capacity = R2 bps; Link Y-B capacity = R3 bps. Q1. Find the value of S that minimizes the delay of moving the file from Host A to Host B. (Ignore propagation delay)