Computer Networks Answers

Define computer network.                                                                                                                         

Distinguish between Computer Network topology and computer network configuration.

Describe 2 methods by which you can implement a completed computer system.

(a) What is SDLC?

(b) List 4 phases in the SDLC                                                                           

Choose two phases from (b) above and state 2 activities for each phase.

Give two advantages of a database package over a spreadsheet to manage school information

In a school, teacher-student after school communication is by wireless network of lap top computers.

a) State two advantages for teachers using this system rather than desktop computers located in a computer

laboratory.                                                                                                                                      b) Give two disadvantages of using laptop computers rather than desktop computers.

Define the following disc terminologies.

a)  Tracks

Sectors

a)        How does the size of a main memory influence a computer's performance?

Draw the truth table for the following Boolean expression: X AND (X OR Y)

On-line banking has improved banking in most developed countries. It allows customers to access their accounts

24 hours a day without the need to open the doors of branches. The central computer runs most of the banking processes.

What do the following terms mean?

a) Online

b) Central computer

Describe the following, stating an example where applicable in each case.

Simulation systems

Reservation systems