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Data Communications

Total questions: 56

Worksheet time: 41mins

Name
Class
Date
1.

The network size that is bigger than a LAN and can cover a city or a village is a ____________________.

a)

PAN

b)

LAN

c)

MAN

d)

WAN

2.

Data communications refers to the transmission of the digital data between two or more computers and a computer network.

a)

True

b)

False

3.

The means through which data is sent from one location to another is

called transmission medium.

a)

True

b)

False

4.

Digital signals consist of binary digits _________.

a)

0&1

b)

2&3

c)

8&16

d)

9&0

5.

What is data communication?

a)

Transfer of data from one point to the next.

b)

Transfer of electronic data from one point to the next over a communication medium.

c)

sending information

d)

none of the above

6.

Types of communication media

a)

Twisted and coaxial cables

b)

duplex

c)

Bluetooth

d)

wired and wireless

7.

collection of two or more computers joined together through communication media, to share information is?

a)

Computer network

b)

Wired network

c)

half duplex

d)

full duplex

8.

radio-waves, microwave, infrared, satellite and bluetooth are examples of which media?

a)

wired

b)

television

c)

wireless

d)

computer

9.

Which network connects computers within a large geographical area?

a)

Wide Area Network

b)

Local Area Network

c)

Metropolitan Area Network

d)

None of the above

10.
What is a server?
a)
Powerful Computers that provide services to other computers
b)
Computers that ask for the services a server provides
c)
Physical connection between devices
d)
A circuitboard with the components to send/receive data
11.
What is a client?
a)
Powerful Computers that provide services to other computers
b)
Computers that ask for the services a server provides
c)
Physical connection between devices
d)
A circuitboard with the components to send/receive data
12.
What is a user?
a)
Any peripheral device
b)
A person that uses a client
c)
Rules for networks and communications
d)
A circuitboard with the components to send/receive data
13.
What is a network?
a)
Two or more computers connected to each other
b)
Computers in a circle
c)
Clients receiving data from servers
d)
Spiders doing a job
14.

What does LAN stand for?

a)

Logical Analogue Network

b)

Laser Assisted Network

c)

Local Area Network

15.

Which of the following statements about a network is FALSE?

a)

Resources such as printers can be shared

b)

Viruses can spread to other computers throughout a computer network

c)

Files cannot be shared between users

16.

Which of these statements is TRUE about a LAN?

a)

A LAN connects computers in a small area such as an office

b)

A modem is needed to connect a computer to a LAN

c)

A LAN consists of only one computer

17.

Which of the following networks is LEAST likely to be a WAN?

a)

The Internet

b)

A school network

c)

A network of bank cash dispensers

18.
Which of these is NOT an advantage of networks?
a)
Sharing peripheral devices such as printers and scanners
b)
Possible to communicate globally
c)
Can protect against viruses
d)
PCs can be backed up and updated by one central PC
19.

Which is the largest computer network in the world?

a)

Cellular

b)

Airdrop

c)

Bluetooth

d)

The Internet

20.

TRUE OR FALSE:

A Wireless Network is a network where computers and other devices are connected physically with cables.

a)

TRUE

b)

FALSE

21.

The network size that is bigger than a LAN and can cover a city or a village is a ____________________.

a)

PAN

b)

LAN

c)

MAN

d)

WAN

22.

What is data communication?

a)

Transfer of data from one point to the next.

b)

Transfer of electronic data from one point to the next over a communication medium.

c)

sending information

d)

none of the above

23.

Types of communication media

a)

Twisted and coaxial cables

b)

duplex

c)

Bluetooth

d)

wired and wireless

24.

This is the process of using communication facilities such as the telephone and microwave relays to send data over a far distance without changing it.

a)

wireless communication

b)

Telecommunication

c)

Data communication

d)

wired communication

25.

The two basic types of computer networks are;

a)

MAN AND LAN

b)

STAR TOPOLOGY

c)

LAN and WAN

d)

BUS TOPOLOGY

26.

collection of two or more computers joined together through communication media, to share information is?

a)

Computer network

b)

Wired network

c)

half duplex

d)

full duplex

27.

Which network connects computers within a large geographical area?

a)

Wide Area Network

b)

Local Area Network

c)

Metropolitan Area Network

d)

None of the above

28.

radio-waves, microwave, infrared, satellite and bluetooth are examples of which media?

a)

wired

b)

television

c)

wireless

d)

computer

29.

Which of the following is NOT a type of transmission channel?

a)

Coaxial cable

b)

Twisted pair

c)

Modem

d)

Microwave

30.

Persons at a KFC restaurant realise that they were able to access the internet on their phones. This would be considered a

a)

MAN

b)

Hot Spot

c)

LAN

d)

Satellite

31.

A LAN is big enough to cover what area?

a)

A university campus

b)

A single house

c)

A single department

d)

All of the above

32.

An advantage of using a LAN is that?

a)

The users are at risk of getting a virus

b)

All the resources can be shared with others

c)

The network is inexpensive to maintain

d)

No real advantage

33.

Twisted pair, coaxial cable and fibre optic cable are examples of

a)

Wired Media

b)

Wireless Media

c)

Both wired and wireless

d)

None of the above

34.

This picture represents

(a)  

35.

(a)   connects computers across a city

36.

Communication is BEST defined as

a)

speaking to someone of a different language

b)

exchange of information between two or more things

c)

bossing someone around

37.

components of communication includes:

a)

receive, message, send, feedback

b)

feedback, person, message

c)

sender, receiver, message, feedback

38.

The information that is exchanged

a)

receiver

b)

sender

c)

message

d)

feedback

39.

The person to whom the message is sent and who interprets

a)

sender

b)

receiver

c)

message

d)

feedback

40.

channel through which the encoder will communicate his message

a)

sender

b)

channel

c)

medium

d)

feedback

41.

The physical connection between networked computing devices is established using either __________ or ________.

a)

Cable Media

b)

Hathway

c)

Wireless Media

d)

None of these

42.

Types of communication media

a)

Twisted and coaxial cables

b)

duplex

c)

Bluetooth

d)

wired and wireless

43.

What is data communication?

a)

Transfer of data from one point to the next.

b)

Transfer of electronic data from one point to the next over a communication medium.

c)

sending information

d)

none of the above

44.

Full Duplex data flow means:

a)

data travels in both directions, but only one direction at a time.

b)

data travels in only one direction.

c)

- data travels in both directions at the same time.

d)

data does not travel.

45.

Which of the following is NOT a type of transmission channel?

a)

Coaxial cable

b)

Twisted pair

c)

Modem

d)

Microwave

46.

Twisted pair, coaxial cable and fibre optic cable are examples of

a)

Wired Media

b)

Wireless Media

c)

Both wired and wireless

d)

None of the above

47.

Data can be transmitted in both directions but only one direction at a time

a)

Simplex

b)

Duplex

c)

Half-Duplex

48.

A walkie-talkie is an example of_____ transmission

a)

Simplex

b)

Duplex

c)

Half-Duplex

49.

The picture is showing examples of __________________________

a)

service providers

b)

internet protocols

c)

games

d)

web browsers

50.

A television announcement is an example of_________

a)

Simplex

b)

Duplex

c)

Half-Duplex

51.

The picture is showing examples of ___________

a)

wired transmission

b)

wireless transmission

c)

data

d)

None of the above

52.

Communication is BEST defined as

a)

speaking to someone of a different language

b)

exchange of data/information

c)

bossing someone around

53.

The transmission of digital data between two or more computers is

a)

communication

b)

Data Communication

c)

Data components Network

54.

Components of communication includes:

a)

receive, message, send, feedback

b)

feedback, person, message

c)

sender, receiver, message, feedback

55.

What is it?

a)

Magazine

b)

Telephone

c)

Computer

56.

Why do we communicate?

a)

Share food

b)

Share ideas and information

c)

Share our clothes

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