What is the maximum data rate of a channel with a bandwidth of 200 KHz if we use four levels of digital signaling.

Select one:

a. 400 bps

b. 800 bps

c. 200 bps

d. 600 bps

The logical address:

Select one:

a. none of the above

b. changed from one hope to another

c. never be changed all over the route

d. changed by routers

Consider a period of a signal is 12 s , calculate the corresponding frequency:

Select one:

a. 0.083333 Hz

b. 83333 Hz

c. 12000 Hz

d. 12 Hz

If a dataword contains 3 bits and 2 additional bits are added to form a codeword, we say that the result is an:

Select one:

a. 9 encoding scheme

b. (3, 2) encoding scheme

c. (3, 5) encoding scheme

d. (5, 3) encoding scheme