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MCQ

Q.

Which of the following summation operation is performed on the bits to check an error-detecting code?

A

Codec

B

Coder-decoder

C

Checksum

D

Attenuation

E

None of the above

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MCQ

1.

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

A

6200 bps

B

9600 bps

C

34000 bps

D

31000 bps

E

None of the above

Discussion

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2.

The fundamental requirements of private-to-public network interconnection methods which need to be provided in gateways is/are

A

universal accessibility for private network Data Terminal Equipment (DTE)

B

adequate cost control mechanisms for administration of the private networks

C

to assign address to private network DTEs

D

A and B both

E

None of the above

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3.

In a synchronous modem, the digital-to-analog converter transmits signal to the

A

equalizer

B

modulator

C

demodulator

D

terminal

E

None of the above

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4.

Select the wrong data communication system component:

A

Medium

B

Protocol

C

Receiver

D

Transits

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5.

'www' stands for _____

A

World Word Web

B

World Wide Web

C

World White Web

D

World Work Web

E

None of these

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