Question # 1

The device used with satellite transmission that ensures that strong outgoing signals do not interface with weak incoming signals is called a.

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microwave

transponder

cable

modem

___________coding scheme is used by IBM

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Unicode

ASCII

EBCDIC

BCD

A computer based system in which a telephone message is recorded in digital form and then forwarded to others is

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a teleconferencing

voice mail

a bulletin board

telecommuting

What layer of the OSI model does data compression?

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Network

Data Link

Presentation

Physical

A network type in which all computers have equal status.

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communication links

peer to peer

WAN

direct connect

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

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ring network

node

information utility

star network

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

Terminal is a.

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device to give power supply to computer

point at which data enter or leaves the computer

the last instruction in a program

any input/output device

The process of transferring data from one location to another is called:

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Data processing

Data Computing

Data communication

Data sequencing

Logical security for on-line systems is achieved primarily by ________ and authorization codes

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MIS

Passwords

Tactical

None of the above

How many pairs of computers can simultaneously communicate on Ethernet LAN?

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1

2

3

multiple

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

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

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

What enables a computer to work with a printer?

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Protocols

Drivers

Packet processor

HCL

Which of the following topologies is passive?

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Star topology

Ring topology

Bus topology

Hybrid topology

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

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