Online Test

Question # 1

Computer output produced as small film images is called

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OCR

COM

LCD

OMR

The cursor can be moved rolling this device on a flat surface.

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mouse

wand reader

trackball

interactive tablet

CD-ROM has the same format as

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backup tape

DAT

diskette

audio compact disk

A bar code reader is an example of a(n).

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processing device

storage device

Input device

output device

Which input device is often attached to laptop computers:

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trackball

inscriber

wand reader

graphic display

If electrical power supply to a computer system is inadvertently disrupted, the serious damage would occur to.

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CPU

disk

CRT

printer

If electrical power supply to a computer system is inadvertently disrupted ,the serious damage would occur to

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CPU

disk

CRT

printer

Which of the following does not support I/O devices

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OCR

joystick

ALU

speaker

The most commonly used output devices in a computer system are

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printers and monitors

disk drives and printers

disk drive and tape drives

tape drive and keyboards

A set raw, unprocessed facts, figures and symbols is called

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Information

Data

Instruction

Code

The cursor can be moved rolling this devices on a flat surface:

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mouse

trackball

want reader

interactive tablet

An example of peripheral devices

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CPU

Printer

Spreadsheet

microcomputer

A one-color screen on a black background is called.

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monochrome

addressable

blank

liquid crystal display

Data us transmitted block by block in

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Asynchronous mode

Synchronous mode

Communication mode

Satellite mode

In a computer system,which of the following has largest number of mechanical components and thus most unreliable :

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magnetic disk

magnetic drum

floppy disk

printer

The mechanism for reading or writing data in a disk is called

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track

rorational delay

access arm

seek time

Word is 16 bits is

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65536

64526

32526

34526

DASD refers to.

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disk storage

track

tape storage

sorting

The major disadvantage of magnetic tape is

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cost

unreliability of store data

slow data recording

data is accessed sequentially

A pictorial screen symbol that represent a computer activity is called

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pointer

touch screen

icon

miicr

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