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MCQ

Q.

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

A

equal to the remainder at the sender

B

zero

C

nonzero

D

the quotient at the sender

E

None of the above

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What is the minimum number of wires needed to send data over a serial communication link layer?

A

1

B

2

C

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D

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none of the above

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2.

In a broad Sense, a railway track is an example of

A

Simplex

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Half Duplex

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3.

Bandlimited signal is

A

transmission of signals without modulation

B

a signal all of whose energy is contained within a finite frequency range

C

simultaneous transmission of data to a number of stations

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All of the above

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None of the above

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The signal to noise ratio for a voice grade line is 30.1 dB (decibels) or a power ratio of 1023:1. The maximum achievable data rate on this line whose spectrum ranges from 300 Hz to 4300 Hz is

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6200 bps

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9600 bps

C

34000 bps

D

31000 bps

E

None of the above

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On a class B network, how many hosts are available at each site with a subnet mask of 248?

A

16382

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4094

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2046

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