IGCSE Computer Science Paper-1: Specimen Questions with Answers 78 - 81 of 164

Question 78

Edit

Write in Short

Short Answer▾

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 79

Edit

Write in Short

Short Answer▾

Name the following network topologies:

the network topologies

The Network Topologies

Loading image

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 80

Edit

Write in Short

Short Answer▾

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.

Question 81

Edit

Write in Short

Short Answer▾

List two benefits of using a computerized traffic control systems.

Explanation

The Computerized traffic control system facilitates increased efficiency and time management thereby performing the accounting functions more rapidly.

The retrieval, storage and sorting of data becomes easier and quicker along with improved billing accuracy and completeness.

Choose Paper