19. Calculate the delay × bandwidth product for the following links.
Use one-way delay, measured from first bit sent to first bit
received.
(a) 100-Mbps Ethernet with a delay of 10 µs.
(b) 100-Mbps Ethernet with a single store-and-forward switch
like that of Exercise 16(b), packet size of 12,000 bits, and 10 µs
per link propagation delay.
(c) 1.5-Mbps T1 link, with a transcontinental one-way delay of
50 ms.
(d) 1.5-Mbps T1 link between two groundstations
communicating via a satellite in geosynchronous orbit,
35,900 km high. The only delay is speed-of-light propagation
delay from Earth to the satellite and back.
