Question # 1

_________Coding schemes use 4 bit code

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Unicode

ASCII

EBCDIC

BCD

The type of modulation that changes the height of the signal is called.

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frequency

phase

amplitude

prephase

The media Access Control sublayer resides in which OSI layer?

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Physical

Data Link

Network

Transport

Token passing prevents data collisions by.

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Using code to steer tokens around each other

Having multiple tokens take alternate routes.

Allowing only one computer at a time to use the token

Using zones to control network traffic congestion

BCD stands for

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Bit coded digit

Byte coded decimal

Binary coded decimal

None

In the networking environment a network adapter card driver is needed for.

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Communication with other adapter cards on a network

Communication between the file server and the other computers on the network

Communication between different types of computers on a network

Communication between the adapter card and the computers operating system

A device that connects multiple nodes to the network is.

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A modem

A repeater

A router

A hub

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

Project 802 defines standards for which layers of the OSI model?

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Application and Presentation layers

Physical an Date Link layers

Transport and Network layers

Network and Data Link layers

To make a personal computer act like a terminal, which type of software must be used?

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fax

videoconferencing

bridge

emulation

How many types of data transmission modes are there?

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2

3

4

5

The arrangement in which most of the processing is done by the server.

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simplex transmission

electronic data interchange

file server

client/server

Light sound and radio waves are examples of :

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Analog Signals

Digital Signals

Simple Signals

None

Which of the following access methods listens to the cable for network traffic before sending data?

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Token passing

Polliing

CSMA/CA

CSMA/CD

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

People on a LAN can share.

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Printer

CD/ROM disk drive

modem

fax machine

All of the above

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

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