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MCQ

Q.

The channel in the data communication model can be

A

postal mail service

B

telephone lines

C

radio signals

D

All of the above

E

None of the above

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MCQ

1.

In CRC there is no error if the remainder at the receiver is _____.

A

the quotient at the sender

B

nonzero

C

zero

D

equal to the remainder at the sender

E

None of the above.

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2.

The EIA-232 interface has _____ pins.

A

20

B

24

C

25

D

30

E

None of the above

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We access the World Wide Web using:

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Browsers

B

Instant messaging applications

C

High bandwidth

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Search engine

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What is the port number for NNTP?

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B

80

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D

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E

None of the above

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5.

The topology with highest reliability is:

A

Bus topology

B

Star topology

C

Ring topology

D

Mesh topology

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