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MCQ

The synchronous modems are more costly than the asynchronous modems because

they produce large volume of data

they contain clock recovery circuits

they transmit the data with stop and start bits.

they operate with a larger bandwidth

None of the above

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MCQ

What frequency range is used for FM radio transmission?

Very Low Frequency : 3 kHz to 30. kHz

Low Frequency : 30 kHz to 300 kHz

High Frequency : 3 MHz to 30 MHz

Very High Frequency : 30 MHz to 300 MHz

None of the above

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MCQ

Modulation is the process of

converting analog signals to digital signals

converting digital signals to analog signals

Multiplexing various signals into high speed line signals

performing data encryption.

Discussion

MCQ

After coding a document into a digital signal, it can be sent by telephone, telex or satellite to the receiver where the signal is decoded and an exact copy of the original document is made. What is it called?

Telex

Word processor

Facsimile

Electronic mail

None of the above

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MCQ

Which of the following statement is correct?

Teleprinters are used for printing at remote locations, not for input.

Teleprinters are same as teletypes

Teleprinters are same as x400

Teleprinters have a printer for output and keyboard for input

None of the above

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MCQ

In cyclic redundancy checking, the divisor is _____ the CRC.

the same size as

one bit less than

one bit more than

two bits more

None of the above

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Miscellaneous or General

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Computer Softwares

History and Generations

CPU and its components

Computer Languages

Computer Hardware

Input Devices

Output Devices

Computer Memory

Digital Logic Gate

Number System

Computer Codes

Operating System

Disk Operating System (DOS)

Database Systems

Computer Security and Viruses

Mixed

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Files and its types

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