Networks

Question 1

What is a computer network?

Answer 1

A network consists of a number of computer systems connected together.

Question 2

Name 5 advantages of using networks

Answer 2

Share hardware
Share software
Share data/files
Easier for internal communication/can send email
Central backup
Easier to monitor network activity
Centrally controlled security
Can access data from any computer

Question 3

Name 3 disadvantages of using computer networks

Answer 3

A network manager may need to be employed – expensive

Security problems – files sent between computers could spread a virus

Hackers can gain access to data more easily

If the server is down, all workstations on the network are affected

Initial cost of servers, communication devices, etc. can be expensive

Question 4

What are the three main types of network?

Answer 4

Local Area Network (LAN)
Wide area network (WAN)
Personal Area Network (PAN)

Question 5

Describe a LAN

Answer 5

A LAN is a network in which the computer systems are all located relatively close to each
other, for example, in the same building or on the same site, such as a school.

Question 6

Describe a WAN

Answer 6

A WAN is a network, in which the computers systems are all located relatively distant from each other, for example, in different buildings all over the country or in different countries.

Question 7

Give an example of where a LAN would be used

Answer 7

In homes, offices, libraries, hospitals, schools

Question 8

Give and example of a WAN

Answer 8

The internet