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MCQ

Q.

In _______ transmission, bits are transmitted over a single wire, one at a time.

A

asynchronous serial

B

synchronous serial

C

parallel

D

(a) and (b)

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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 _______ encoding, the duration of the bit is divided into two halves. The voltage remains at one level during the first half and moves to the other level in the second half. The transition at the middle of the bit provides synchronization.

A

Manchester

B

differential Manchester

C

both (a) and (b)

D

neither (a) nor (b)

Discussion

MCQ

3.

________ uses two carriers, one in-phase and the other quadrature

A

ASK

B

PSK

C

FSK

D

QAM

Discussion

MCQ

4.

A _________ digital signal includes timing information in the data being transmitted.

A

self-synchronizing

B

self-modulated

C

self-transmitted

D

none of the above

Discussion

MCQ

5.

. Two common scrambling techniques are ________

A

NRZ and RZ

B

AMI and NRZ

C

B8ZS and HDB3

D

Manchester and differential Manchester

Discussion

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