IGCSE Computer Science Paper-1: Specimen Questions with Answers 24 - 26 of 164

Question number: 24

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Show a Diagram containing various types of network Topology.

Explanation

Image of The Network Topology

Image of the Network Topology

Question number: 25

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What do you mean by Data Fragmentation?

Explanation

Image of The Data Fragmentation

Image of the Data Fragmentation

Data Fragmentation is defined as the process of breaking data into various sections.

i) It involves division and management of a logical object.

ii) The main aim of data fragmentation is to place data at its location from where it is accessed most often.

iii) One of the biggest advantages of Data Fragmentation is that it reduces disk space utilization considerably.

iv) Horizontal, Vertical and Mixed Fragmentation are the three types of Fragmentation Strategies.

Question number: 26

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Explain two major causes of a computer system failure.

Explanation

A system failure may occur due to interrupted power supply or fluctuation in the voltage being reported quite often during the working hours.

This can be prevented by making sure the power supply is uninterrupted and the cables are properly connected to the system.

A system failure may also occur while downloading suspicious and insecure links available on different websites.

While visiting online websites we should be careful and download particular links/files from trusted sources only to prevent any chances of system failure.

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