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Intoduction to DCS 2018-19

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

The information to be communicated in a data communications system is the _______.

a)

Medium

b)

Message

c)

Protocol

d)

Transmission

2.

This was the first network.

a)

INTERNET

b)

INTRANET

c)

ARPANET

d)

CSNET

3.

Communication between a computer and a keyboard involves ______________ transmission.

a)

Simplex

b)

Half-duplex

c)

Full-duplex

d)

automatic

4.

_______ refers to two characteristics: when data should be sent and how fast it can be sent.

a)

Timing

b)

Syntax

c)

Semantics

d)

None of the choices

5.

________ is a collection of many separate networks.

a)

A LAN

b)

A WAN

c)

AN INTERNET

d)

None of these

6.

_____ refers to the physical or logical arrangement of a network.

a)

Mode of operation

b)

Data flow

c)

Topology

d)

network

7.

In _______ transmission, the channel capacity is shared by both communicating devices at all times

a)

Simplex

b)

Half-duplex

c)

Full-duplex

d)

None of these

8.

Frequency of failure and network recovery time after a failure are measures of the _______of a network.

a)

Security

b)

Reliability

c)

Performance

d)

Fesibility

9.

_______ refers to the structure or format of the data, meaning the order in which they are presented.

a)

Timing

b)

Syntax

c)

Semantics

d)

None of these

10.

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

a)

protocol

b)

signal

c)

medium

d)

transmitter

11.

An unauthorized user is a network _______ issue.

a)

reliability

b)

security

c)

performance

d)

all of this

12.

A ________ is a set of rules that governs data communication.

a)

forum

b)

standard

c)

protocol

d)

none of these

13.

In a ______ connection, two and only two devices are connected by a dedicated link.

a)

point-to-point

b)

multipoint

c)

point-to-point or multipoint

d)

None of these

14.

Which topology requires a central controller or hub?

a)

Bus

b)

Star

c)

Ring

d)

Mesh

15.

_______ is the protocol suite for the current Internet.

a)

TCP/IP

b)

NCP

c)

ACM

d)

UNIX

16.

_______ are special-interest groups that quickly test, evaluate, and standardize new technologies.

a)

Standard organization

b)

Forums

c)

Regulatory agencies

d)

All of these

17.

________ defines how a particular pattern to be interpreted, and what action is to be taken based on that interpretation.

a)

Timing

b)

Synax

c)

Semantics

d)

None of these

18.

A _______ connection provides a dedicated link between two devices.

a)

multipoint

b)

primary

c)

secondary

d)

point-to-point

19.

The largest geographic area a wide network can span is ___________

a)

town

b)

state

c)

country

d)

the world

20.

In a fully connected mesh topology with six computers, we need ______ links.

a)

6

b)

36

c)

15

d)

25