Question # 1

Which of the following variable name is legal?

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PAK 123

A * B

COMPUTER

A/B

The major operational problem of the early first generation computers was

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inaccurate results

poor reliability

delayed results

limited capabilities

Pick up wrong logical expression

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Which of the following does not represent an I/O devices?

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speaker

OCR

Joystick

ALU

The equipment attached to CPU which computer can access are called

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Hardware

input output devices

peripherals

computer components

A Digitizer uses a mouse like copying device called

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Puck

Push

Pop

Paste

An interfact is basically a component that

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test the system

corrects the errors in program

allows two incompatible entities with one another

enhances the capability of a system/equipment

Storage of 1K means that it has following number of storage locations

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1000

964

1024

1032

1 byte consists of

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4 bits

8 bits

16 bits

32 bits

Which of the following is an example of volatile memory.

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ROM

RAM

PROM

Hard disk

A fourth-generation language used for database retrieval

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high level language

assembly language

query language

procedural langauage

________ key is used to cancel the current operation

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Alt

Caps Lock

Ese

Num lock

The first high-level language to be introduced was

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COBOL

FORTRAN

Pascal

Ada

An error in a computer hardware and software is called a bug. Another name for its is

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glitch

hacker

virus

pixel

A magnetized spot represents.

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cpi

MB

0 bit

1 bit

Is Secondary storage device

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CD-ROM

ROM

Cache

RAM

The transfer if encoded information from one location to another by a communication channel is called

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data processing

data distribution

data communication

data encryption

Data communication requires only a :

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Sender

Receiver

Transmission Medium

All of the above

Following devices are used in simplex mode

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Radio

Television

a , b

Multiplexers

The number A9D in Hexadecimal system is equivalent to which number in binary system.

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101010111101

101010011101

101110011101

101010011111

A network of geographically distant computers and terminals is called a.

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bus

WAN

gateway

LAN

A one color screen on a black background is called

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monochrome

addressable

blank

lcd

How many types of data transmission modes are there?

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2

3

4

5

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

Transmit data in the form of light is called

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Fiber glass

UTP

Color glass

None

Data processing is also called :

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Data computing

Information technology

Information system

Calculating

OSI model has

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11 layers

7 layers

3 layers

10 layers

The commutative law in Boolean Algebra, where a, b and c are binary number is.

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a+0=a

a+1=1

a+b=b+a

a. (b+c) = a.b +a.c.

The voice channel has a bandwidth of

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0 - 2 KHz

0 - 4 KHz

5 - 10 KHz

10 - 20 KHz

__________key is used to change lowercase letters mode to uppercase and vice versa.

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Alt

Enter

Ctrl

Caps Lock

A dump terminal signifies that

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It has lower IQ compared to an intelligent terminal

It can not be used as an independent computer

It does not have a keyboard connected to it

It belongs to firs generation computers

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