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Q.

In _______ transmission, a start bit and a stop bit frame a character byte

A

asynchronous serial

B

synchronous serial

C

parallel

D

(a) and (b)

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MCQ

1.

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

A

unipolar

B

bipolar

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polar

D

none of the above

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2.

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

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Quadrature amplitude modulation (QAM) is a combination of ___________

A

ASK and FSK

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5.

The signal rate is sometimes called the ____ rate

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baud

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bit

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