Question # 1

A system in which data can be received and sent simultaneously is called

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Simplex

Half duplex

Full-duplex

Multi-duplex

DBA defines

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Errors

Security

Information

Objects

Which of the following object of database is used to retrieve data from database?

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Queries

Forms

Reports

Tables

The key board shortcut used to copy selected text or object is

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CTRL + X

CTRL + V

CTRL + C

CTRL + Y

In database data exists only in the form of

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Files

Records

Data item

Tables

A combination of four binary digits is called:

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Bit

Nibble

Byte

None of the above

Propagation of signals across a communication medium is known as

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Signaling

Transmission

Broadcasting

Dissemination

Data item is a

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Files

Small unit

Information

Record

Another name for antivirus is

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Vaccine

Worm

Trojan horse

DES

The output of a query is the form of

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Table

Reports

Files

Forms

An operating system performs:

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File-system management

Hardware management

User interface

All of the above

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NAT I Computer Science Computer MCQs With Answers

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