Question # 1

Who invented the modem?

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IBM

DEC

AT&T information System, USA

Apple computers Inc

ASCII 7 bit code can represent maximum

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265 character

128 character

64 character

65536 character

_________Coding schemes use 4 bit code

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Unicode

ASCII

EBCDIC

BCD

Which types of data consists of words ,sentences and paragraphs

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Text

Image

Numeric

Video

The Height of wave within a given period of time is called :

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Amplitude

Oscillation

Frequency

Pulses

One or more computers connected to a hub computer is a(n)

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ring network

node

information utility

star network

When all hardware, software, storage, and processing is housed in one location it is called.

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a time-sharing system

centralized processing

a DDP system

a host computer system

People on a LAN can share.

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Printer

CD/ROM disk drive

modem

fax machine

All of the above

_______is not component of data communication.

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Medium

Voltage

Decoder

Receiver

What best describes a bus topology network?

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The number of computers on the network does not affect performance

Easier to troubleshoot than other topologies

Needs significantly more cabling than other topologies

Media is inexpensive and easy to work with

Which of the following does not provide a graphical user interface.

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OS/2

MS-DOS

Macintosh

Windows NT Workstation

The signals produced by a computer or terminal to be sent over phone lines must be converted to.

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modems

analog signals

digital signals

microwave

A device that connects multiple nodes to the network is.

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A modem

A repeater

A router

A hub

Cabling on a linear bus topology can be extended using which of the following?

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Terminator

Barrel connector

Network adapter card

Medium attachment unit

IBM stands for

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International Business Machine

International Binary Machine

Internal Business Machine

International Business Microsoft

The _______ is the physical path over which a message travels.

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Protocol

Medium

Single

All

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ECAT Computer Science Chapter 6 Data Communication Online Test MCQs With Answers

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