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Data Communication and Network

Total questions: 50

Worksheet time: 42mins

Name
Class
Date
1.
Communication without wires, in a straight line is accomplished using:
a)
Twisted pairs
b)
Microwaves
c)
Satallite
d)
Fibre Optics
2.
A modem contained within a computer system unit is called a/an_____________modem.
a)
External
b)
Internal
c)
Wireless
d)
Wired
3.
Computers send and receive data in the form of ___________________signals.
a)
Analog
b)
Modulated
c)
Demodulated
d)
Digital
4.

The conversion from digital signals to analog signals and vice versa is called______________.

a)

Modem/Demodem

b)

Modulation/Demodulation

c)

Analoging

d)

De-Digitizing

5.
Rules used to allow successful data transmission are called_____________________.
a)
Interconnections
b)
Medium
c)
Protocols
d)
Networks
6.
The acronym WLAN stands for______________.
a)
Wi-Fi Local Area Network
b)
Wireless Local Area Network
c)
Wide Local Area Network
d)
Wireless Local Analog Network
7.
Satellite, Microwave and Infrared are types of __________________________.
a)
Transmission protocols
b)
Transmission media
c)
communication modes
d)
networks
8.
_______________________is the transmission and reception of data between locations.
a)
Broadcast
b)
Data Communication
c)
Transmission Media
d)
Uploading
9.
The extranet is not available to persons outside an organizations network.
a)
True
b)
False
10.
Documents and Web Resources on the web are identified by this.
a)
URLs
b)
FTPs
c)
IRCs
11.

The term 'bandwidth' refers to .

a)

the amount of data that can be downloaded via radio waves

b)

the maximum amount of data that can be transferred at any time via an Internet connection

c)

the number of minutes you use while online

d)

the method you use to connect to the Internet

12.

Which one of the following is a typical example of a web address?

a)

http:telko@info.uk

b)

alex@intellect.co.za

c)

http://www.eaglewood.co.za

d)

C:/computers.za

13.

Which of the following are the example of usage of computer communications?

a)

Blogs

b)

Chat rooms

c)

E-mail

d)

RSS

14.

GPS receivers are:

a)

Built into many mobile devices

b)

Available as a handheld device

c)

Available with new vehicles

d)

Available in a coffeehouse or restaurant

15.

What is the advantages of a network?

a)

Facilitating communications

b)

Sharing hardware

c)

Sharing data and information

d)

Sharing software

16.

Which of the following are the examples of communication devices?

a)

modems

b)

wireless access points

c)

routers

d)

network cards

17.

What is the main capabilities of a home network?

a)

Connect to the Internet at the same time

b)

Share a single high-speed Internet connection

c)

Access files and programs on other computers

d)

Share peripherals.

18.

Message can be _________,

_____________ &______________ files.

a)

Text

b)

Audio

c)

Video

d)

Alphabets

19.

The computer or device that is used for sending data is called____________-

a)

Sender

b)

Reciever

c)

Manager

d)

Follower

20.

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.

21.

The functionalities of the presentation layer include ____________

a)

a) Data compression

b)

b) Data encryption

c)

c) Data description

d)

d) All of the mentioned

22.

In the OSI model, as a data packet moves from the lower to the upper layers, headers are _______

a)

a) Added

b)

b) Removed

c)

c) Rearranged

d)

d) Randomized

23.
The actual arrangements of cables and nodes on a network is called ___________
a)
Geographical Topology
b)
Network Topology
c)
Logical Topology
d)
Physical topology
24.
What type of network topology shown in the picture?
a)
Bus topology
b)
Ring topology
c)
Star topology
d)
Tree topology
25.

Application layer is implemented in ____________

a)

a) End system

b)

b) NIC

c)

c) Ethernet

d)

d) Packet transport

26.

Transmission data rate is decided by ____________

a)

a) network layer

b)

b) physical layer

c)

c) data link layer

d)

d) transport layer

27.

What is the name of the following cable.

a)

Twisted Pair Cable

b)

Fiber Optic Cable

c)

Coaxial Cable

d)

None of the Above

28.

DHCP allows both manual and automatic assignment of IP addresses. True or False?

a)

True

b)

False

29.

In Internetwork, network layer is responsible for _______.

a)

Host to User Link

b)

User to Host IP

c)

Host to Host Delivery

d)

Host to Server communication

30.

Dividing a network address into smaller networks can be called as ___________.

a)

encapsulation

b)

subnetting

c)

decapsulation

d)

fragmentation

31.
What is the subnet mask for prefix /30?
a)
255.255.255.252
b)
255.255.255.248
c)
255.255.255.224
d)
255.255.255.240
32.
What is the subnet mask for prefix /29?
a)
255.255.255.252
b)
255.255.255.248
c)
255.255.255.224
d)
255.255.255.240
33.
What is the prefix length for subnet mask 255.255.255.252?
a)
/26
b)
/27
c)
/28
d)
/29
e)
/30
34.
What is the prefix length for subnet mask 255.255.255.248?
a)
/26
b)
/27
c)
/28
d)
/29
e)
/30
35.

Which of the following is important in computing the SUBNET MASK?

a)

CIDR

b)

network ID

c)

Broadcast ID

d)

IP address

36.

Which octet determines the class of an IP address?

a)

First

b)

Second

c)

Third

d)

Fourth

37.

What class is this IP address? 10.10.10.0

a)

A

b)

B

c)

C

d)

D

38.

Which description below is a Class C network address?

a)

network. host. host.host

b)

network.network.host.host

c)

network.network.network.host

39.
What is the network portion of :
IP: 192.168.1.2
Subnet mask: 255.255.255.0
a)
192
b)
192.168
c)
192.168.1
d)
2
40.
The range of first octets in a class A IP address is 
a)
0-127
b)
1 - 128
c)
1 - 256
d)
10 - 128
41.
Which network service provides automatic assignment of IP addresses to clients that have been configured to do so?
a)
Dynamic Host Configuration Protocol (DHCP)
b)
Transmission Control Protocol (TCP)
c)
User Datagram Protocol (UDP)
d)
Classless inter-domain routing (CIDR)
42.
identifies which portion of the IP address is the network address and which portion is the host address
a)
IP address
b)
subnet mask
c)
default gateway
d)
DNS server
43.
What term refers specifically to an IP address that has been manually configured on a device by a network technician?
a)
A static address
b)
A dynamic address
c)
A public address
d)
A network address
44.

What type of address is allowed on the Internet?

a)

private IP address

b)

default gateway address

c)

loopback address

d)

public IP address

45.

Which layer of the OSI Model does ARP belong to?

a)

Physical Layer

b)

Data Link Layer

c)

Network Layer

d)

Transport Layer

46.

What does DNS stand for?

a)

Domain Name Server

b)

Destination Name Server

c)

Destination Network Server

d)

Domain Network Server

47.

how many bits make up a subnet mask

a)

24

b)

32

c)

64

d)

16

48.

How many bits are there in a IPV4 Network address?

a)

32

b)

64

c)

24

d)

128

49.

Which subnet mask would be appropriate for a network address range to be subnetted for up to eight LANs, with each LAN containing 5 to 26 hosts?

a)

0.0.0.240

b)

255.255.255.252

c)

255.255.255.0

d)

255.255.255.224

e)

255.255.255.240

50.
What is the default subnet mask for a Class B network?
a)
255.0.0.0
b)
255.255.0.0
c)
255.255.255.0
d)
255.255.255.255

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