Suppose two hosts, a and b, are separated by 20,000 kilometers and are connected by a direct link of r = 2 mbps. suppose the propagation speed over the link is 2.5 108 meters/sec.

a. calculate the bandwidth-delay product, r dprop.
b. consider sending a file of 800,000 bits from host a to host b. suppose the file is sent continuously as one large message. what is the maximum number of bits that will be in the link at any given time?