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MCQ

Q.

The data rate is sometimes called the ___ rate

A

baud

B

bit

C

signal

D

none of the above

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MCQ

1.

In _____ transmission, the phase of the carrier signal is modulated to follow the changing voltage level (amplitude) of the modulating signal.

A

AM

B

PM

C

FM

D

none of the above

Discussion

MCQ

2.

In _____, the level of the voltage determines the value of the bit.

A

NRZ-I

B

NRZ-L

C

both (a) and (b)

D

neither (a) nor (b)

Discussion

MCQ

3.

Given an AM radio signal with a bandwidth of 10 KHz and the highest-frequency component at 705 KHz, what is the frequency of the carrier signal?

A

700 KHz

B

705 KHz

C

710 KHz

D

Cannot be determined from given information

Discussion

MCQ

4.

In ______ transmission, we send 1 start bit (0) at the beginning and 1 or more stop bits (1s) at the end of each byte.

A

synchronous

B

asynchronous

C

isochronous

D

none of the above

Discussion

MCQ

5.

The most common technique to change an analog signal to digital data is called __________.

A

PAL

B

PCM

C

sampling

D

none of the above

Discussion

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