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Waec 2021 Data processing Answer

IWAEC Data Processing Answers 2021.

PAPER 2 [Essay]
Answer any FOUR questions.
Write your answers on the answer booklet provided.
1. (a) What is a computer virus?
(b) Mention three sources of computer viruses
(c) List two ways of preventing computer virus infection.
(d) State one function of each of the following units of a computer:
i. input unit;
ii. memory unit.
(e) Give one example of each of the following:
i. Input unit;
ii. Memory unit.

2. (a) Give two examples of a word processing application.
(b) Distinguish between the “Save” and “Save As” commands.

(c) State the function of the following key combination:
i. Ctrl + shift + +
ii. Ctrl + E
(d) A college secretary who is typing the school’s examination questions sits all day in front of a Cathode-ray tube (CRT) monitor which is positioned below her eye level.
i. Mention two measures that the secretary should take in order not to have a medical problem.
ii. Identify two health-related challenges that the secretary is likely to face.
3. (a) State one difference between a computer professional and a computer user.
(b) i. List four Computer Professionals.
ii. State one function for each of the professionals listed in 3(b) (i) above.
(c) Mention four safety measures to be taken when working in a computer laboratory.

Mention four safety measures to be taken when working in a computer laboratory.

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