IGCSE Computer Science Paper-1: Specimen Questions with Answers 78 - 80 of 164

Question number: 78

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State one advantage and one disadvantage of displaying information in analogue form.

Explanation

Displaying information in analogue form is free from distortion and also allows easier integration to personal computers and software applications.

The displaying of information in analogue form involves noise issue leading to unwanted disturbances.

Question number: 79

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Name the following network topologies:

the network topologies

The Network Topologies

Explanation

The first topology is that of a star network and the second is that of bus network.

i) In a star network topology every host is connected to a central hub.

ii) In a bus network topology there is one main cable to which all the other nodes are directly connected.

Question number: 80

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Give two differences between Flash Memories and CD-RWs.

Explanation

In Flash Memory data is electronically reprogrammed and erased whereas in CD-RWs data is not electronically programmed rather it is re-written.

Flash Memory is non-volatile chip whereas CD-RW (Compact Disc-Rewritable) is a digital optical disc.

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