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MCQ

Q.

A constellation diagram shows us the __________ of a signal element, particularly when we are using two carriers (one in-phase and one quadrature).

A

amplitude and phase

B

amplitude and frequency

C

frequency and phase

D

none of the above

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MCQ

1.

___________ conversion involves three techniques: line coding, block coding, and scrambling.

A

Analog-to-digital

B

Digital-to-analog

C

Analog-to-analog

D

Digital-to-digital

Discussion

MCQ

2.

Unipolar, bipolar, and polar encoding are types of _______ encoding.

A

line

B

block

C

NRZ

D

Manchester

Discussion

MCQ

3.

In QAM, both ________ of a carrier frequency are varied.

A

frequency and amplitude

B

phase and frequency

C

amplitude and phase

D

none of the above

Discussion

MCQ

4.

In _______ transmission, bits are transmitted simultaneously, each across its own wire.

A

Asynchronous serial

B

Synchronous serial

C

Parallel

D

(a) and (b)

Discussion

MCQ

5.

Which of the following encoding methods does not provide for synchronization?

A

NRZ-L

B

RZ

C

NRZ-I

D

Manchester

Discussion

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