Consider two hosts, A and B, directly connected by a link of 40,000 Km, propagation speed 2.5*108m/s, and transmission rate R=5 Mbps. Assume zero queuing delay. (a) Suppose dprop is less than dtrans. At time t=dtrans, where is the first bit of the packet? (b) Calculate the bandwidth-delay product R* dprop. (c)Consider sending a file of 1,200,000 bits from host A to host B. Suppose the file is sent continuously as a large message. What is the maximum number of bits that will be in the link at any time? (d) What is the width (in meters) of a bit in the link