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MCQ

Q.

In _______encoding, we use three levels: positive, zero, and negative

A

unipolar

B

bipolar

C

polar

D

none of the above

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MCQ

1.

The idea of RZ and the idea of NRZ-L are combined into the ________ scheme.

A

Manchester

B

differential Manchester

C

both (a) and (b)

D

neither (a) nor (b)

Discussion

MCQ

2.

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

MCQ

3.

Which encoding method uses alternating positive and negative values for 1s?

A

NRZ-I

B

RZ

C

Manchester

D

AMI

Discussion

MCQ

4.

ASK, PSK, FSK, and QAM are examples of ________ conversion.

A

digital-to-digital

B

digital-to-analog

C

analog-to-analog

D

analog-to-digital

Discussion

MCQ

5.

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

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