Question # 1

The encoding scheme of data represent as

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EBCDIC code

ASCII code

Unicode

All of the above

To most commonly used output device today is a.

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CRT monitor

keyboard

mouse

card punch

Which of the following cable is comprised of two separate insulated copper wires that are twisted?

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Fiber optics

Twisted pair wire

coax

Submarine

Data transmission speed of wire pair is

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9600 bps

9500 bps

3600 bps

3500 bps

The time required for the access arm to get into position over a particular track is

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rotational delay

data transfer

seek time

head switching

Frequency is measured in

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Channels

Hertz

Bandwidth

Baud

Soft copy refers to

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OCR-A

screen output

microfiche

digitizing

Shift of a register by one bit to left in binary code is equivalent to.

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addition of 2

subtraction of 2

division by 2

multiplication by 2

The voice channel has a bandwidth of

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0 - 2 KHz

0 - 4 KHz

5 - 10 KHz

10 - 20 KHz

Which input device is often attached to laptop computers:

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trackball

inscriber

wand reader

graphic display

Imaging used what devices to input data?

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scanner

barcode reader

icon

tablet

The CRT technology with the best resolution.

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MICR

VGA

SVGA

LCD

The concept of using several small disk packs that work together as a unit is

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CD-ROM

RAID

WORM

OMR

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

Voice input devices convert voice input to.

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digital code

OCR-A

bar codes

optical marks

A magnetize spot represent

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CPI

MB

0 bit

1 bit

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