Question:

(a) What do you meant by the term ‘LAN'? How is a LAN different from a WAN?

(b) Explain three types of cables which are commonly used with LANs.

(c) Three common networking topologies are the Star, the Ring and the Linear Bus. Provide one advantage and one disadvantage of each of the above topologies.

(d) The program specification phase of the programming process defines five tasks. List four of them.

(e) (a) Describe the meaning of the following terms :

• Robotics.
• Expert Systems. 
• Virtual Reality.

Provide examples of these fields in business and everyday life.