Answer the following parts:

a) What is a queue? Whether queues can be eliminated from human life? If yes, how? If no, why not?

b) What are the units of the following terms used in a queuing system?

i. Rate of Arrival

ii. Rate of Service

iii. Traffic Intensity of Utilization factor

c) Give one example for each of the following queue disciplines:

i. Priority service

ii. Pre-emptive priority rule

iii. Non pre-emptive priority rule

Note: Provide detailed data for these points and pictures (if possible)