computer network assignment:

part I: short questions:

1. What is attenuation?

2. Define channel capacity.

3. What key factors affect channel capacity?

PART II: PROBLEMS

1. A digital signaling system is required to operate at 9600bps.

(a.) If a signal element encodes a 4-bit word, what is the minimum required bandwidth of the channel? Using Nyquist's equation

(b.) Repeat part (a.) for the case of 8-bit words.