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TERM THREE-2015 END-YEAR EXAM
FORM 3, COMPUTER STUDIES
TIME: 2 ¼ HOURS
1. What does the following control measures against computer crime involve? 4 Marks
a. Audit trail
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b. Data encryption
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c. Log files
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d. Passwords
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1. List four examples of flat panel displays 2 Marks
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2. Define the term mail merging 2 Marks
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4. Define the following terms used in data communications=
i. Data signal (1 Mark)
ii. Multiplexing (1 Mark)
iii. Bandwidth (1 Mark)
iv. Baseband (1 Mark)
v. Attention (1 Mark)
5 Name two files that are created in mail merging process 2 Marks
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6. While purchasing computers for his school, the principal Musambweni high school decided to consult an expert. As a computer student advise him on four hard ware considerations 4 Marks
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7. Name four methods used in data management on a worksheet 2 Marks
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8. List four formatting techniques used in ms excel 2 Marks
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9. a. Describe three methods of testing the program for errors 3 Marks
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b. List down four selection controls use in writing a program 2 Marks
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c. Outline four benefits of modularization in programming 2 Marks
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10. Get the value of X 9 Marks
a. 11.0112(X10
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b. 4538(X2
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c. AD216(X8
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b. Outline four ways in which data integrity may be maintained 4 Marks
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c. Discuss four advantages of using questionnaires as a fact finding tool 4 Marks
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d. What is the role of a clipboard in a computer? 1 Mark
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11. a. List three advantages of using computer in your church 3 Marks
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b. Differentiate between static RAM and dynamic RAM. 4 Marks
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c. Describe the following types of queries found in Ms. Access 3 Marks
i. Update query
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ii. Append query
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ii. Make table query
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d. Distinguish between source program and object code 2 Marks
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e. Give the appropriate circumstances for using either insert mode or type over mode 2 Marks
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12. a. Masai Teacher’s college has decided automate its library for effective services to the students
Identify four methods they are likely to use to gather information during system development
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b. Define the following terms in relation to Internet 4 Marks
i. Downloading
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ii. Hyperlink
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iii. Web browser
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iv. Internet service provider
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c. Differentiate between sorting and filtering as used in electronic spreadsheet program 2 Marks
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d. Define the following terms 3 Marks
i. Spam mail
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ii. Mail attachment
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iii. On board modem
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e. Define the term icon as used in computing 1 Mark
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13. Explain the following types of computer network
i. Local area network (LAN) 2 Marks
ii. Wide area network (WAN) 2 Marks
14. Draw and explain the satellite transmission system 6 Marks
15. State five communication devices as used to establish computer network 5 Marks
16. What is the function of a repeater on the network? 1 Mark
17. Name two advantages of satellite communication 2 Marks
18. Differentiate between single mode and multimode fiber optic 2 Marks
19. State three advantages and one disadvantage of wireless communication 4Marks
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