IGCSE Computer Science Paper-1: Specimen Questions with Answers 117 - 119 of 164

Question number: 117

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List two ways of protecting a computer from hacking.

Explanation

updating OS and other Soft wares frequently is one of the best ways to protect a computer from hacking.

Use of open Wi-Fi on router should be avoided completely to protect the computers or PCs.

Question number: 118

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List the two effects of e-commerce on society.

Explanation

The use of e-commerce has increased the job opportunities in the society by bridging the gap between the job seeker and the job giver.

The society has also been benefited with faster response to its queries related to the availability of the products.

Question number: 119

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List three advantages of using magnetic disks over magnetic tapes while storing data.

Explanation

A magnetic disk has several advantages over magnetic tapes while storing data:

i) A magnetic disk is faster in accessing data sequentially or randomly as compared to magnetic tapes.

ii) A magnetic disk can access data faster than magnetic tapes.

iii) A magnetic disk can be updated whereas a magnetic tape cannot be updated once the data is written on it.

iv) Some common examples of magnetic tapes are Cassette tapes, VHS video tape and Magnetic disks are Hard disks, zip disks and floppy disks.

The figure show magnetic disks

The Figure Show Magnetic Disks

The figure show magnetic field

The Figure Show Magnetic Field

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