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MCQ

The process of converting analog signals into digital signals so they can be processed by a receiving computer is referred to as:

modulation

demodulation

synchronizing

None of the above

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None of the above

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Layer one of the OSI model is

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Which of the following statement is correct?

Satellite transponders use a higher frequency for reception of radiation from earth stations and lower frequency for transmission to earth stations.

Satellite transponders contain a device that echos the radiation without change from one point on earth to another

Satellite transponder contain devices that transform the message sent from one location on earth to a different code for transmission to another location

satellite transponders us lower frequency reception of radiation from earth stations and higher frequency for transmission to earth stations

None of the above

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A 4 KHz noiseless channel with one sample every 125 per sec, is used to transmit digital signals. Find the bit rate (bits per second) that are sent, if CCITT 2.048 Mbps encoding is used.

500 Kbps

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8 Kbps

64 Kbps

None of the above

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What is the standard protocol for network management features?

SNA

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None of the above

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Computer Softwares

History and Generations

CPU and its components

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Computer Hardware

Input Devices

Output Devices

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Digital Logic Gate

Number System

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Disk Operating System (DOS)

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