T3 - MS

Question 1

State two benefits of a LAN.

Answer 1

Can access their files from any
computer / classroom

can share files

Question 2

State two ways the local area network can be used to monitor the work of employees.

Answer 2

record log on / log off times
remote access / view users’ screens

Question 3

Define what is meant by a Wide Area Network.

Answer 3

The computers are geographically
remote/ distanced/ more than a mile
apart
Communication medium is not owned
by the organisation

Question 4

Identify two differences between a WAN and a LAN (Local Area Network).

Answer 4

WAN is over a large geographical area
a LAN is over a small geographical area.

WAN uses external hardware
LAN has its own infrastructure

Question 5

Explain why the TCP/IP model uses layers. 2

Answer 5

A layer can be removed/changed etc.
…without affecting any other layers
Each layer has its own purpose

Question 6

Describe the relationship between the website URL, the IP address and the webserver.

Answer 6

The website is hosted on a webserver
The website/webserver has an IP
address
(Browser) sends URL to DNS
URL has a linked IP
DNS finds IP
IP address sent back to the
browser/computer

Question 7

Give two reasons why the library should use encryption.

Answer 7

Data cannot be understood if
intercepted

So that only authorised users can
access the confidential material

Question 8

Explain why Ethernet is a standard.

Answer 8

Ethernet is used by (mostly) all
manufacturers

To allow compatibility with other
devices

Question 9

Describe the role of the switch in the office network. 2

Answer 9

To connect the devices together
Receives data/packets/traffic
Direct/send data/packets/traffic only to
its destination

Question 10

Explain how each of the following can contribute to the performance of a network.
Wifi frequency

Answer 10

5GHz frequency can carry more data
per second than a 2.4 GHz frequency

Question 11

Explain how each of the following can contribute to the performance of a network.
Interference

Answer 11

objects can
block the signal

Question 12

Explain how each of the following can contribute to the performance of a network.
Number of concurrent users

Answer 12

more traffic means the same
bandwidth is split

or more collisions

Question 13

Explain how each of the following can contribute to the performance of a network.
Type of network traffic

Answer 13

transmitting videos/large files will take
up more bandwidth than text files

Question 14

Identify one other factor that can contribute to the performance of a network.

Answer 14

Bandwidth

Question 15

Describe how packet switching can be used when sending data.

Answer 15

Data is split into packets (by originator)
Each packet has a fixed size
Each packet has a header
packets are sent individually

Question 16

Describe what is meant by a virtual network. 2

Answer 16

Software governed network // non-
physical network

Computers in different locations
connect to it through the Internet

Multiple physical networks can appear
as one virtual network