A fiber-optic cable has a rise time of 2 ns/km and a length of 40 km. It is used with a

receiver with a rise time of 20 ns and a transmitter with a rise time of 50 ns. Calculate

the total rise and bandwidth of the system.

Over what distance could a signal be transmitted using the cable in Problem #2 and a data rate of 100 Mb/s with RZ code? Neglect the transmitter and receiver rise times, and consider only the cable.