cameroon gce A level June 2013 computer science 2
(a) Explain the term secondary storage. State why it is required.
List THREE types of secondary storage. For each, briefly describe an application that uses it.
(6 marks)
Explain the term embedded system.
Give two examples of devices which might have an embedded system.
A microprocessor embedded in a plastic card can be used to read or store information on the card using special terminals.
Outline one advantage and one disadvantage of such cards.
Outline two conditions that need to be met for such cards to be widely used.
2. (a) What is a physical network topology?
Name and illustrate ANY TWO of the three main types of network topologies. For each
topology, give one protocol used and one advantage.
State the name of any 3 of the 7 layers defined by the OSI 7-layered network
model. Also state the main function of the first layer.
Differentiate between routers and gateways.
