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Computer Studies Paper 1 Question Paper

Computer Studies Paper 1

Course:Secondary Level

Exam Year:2010

1

NAME:………………………………………………INDEX ………………..…..DATE……..…
SCHOOL:………………………………………………SIGNATURE……………………………
451/1
COMPUTER STUDIES
PAPER 1
JULY / AUGUST, 2010
2½ HOURS
JOINT INTER-SCHOOLS EVALUATION TEST (JISET)
Kenya Certificate of Secondary Education 2010
451/1
COMPUTER STUDIES
PAPER 1
JULY / AUGUST 2010
INSTRUCTIONS TO CANDIDATES
_ This paper consists of two sections A and B.
_ Answer all the questions in sections A
_ Answer question 16 and any other three questions from section B
For Examiners Use Only
Section Question Score
A 1 - 15
B 16
17
18
19
20
Total marks
SECTION A (40 MARKS) Answer all the questions in this section
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1. State four different parts that make up a computer (2 mks)
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2. Briefly explain the emerging trends in micro computer technology in relation to
size (1 mk)
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3. (a) What is meant by the term greyware? (1 mk)
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(b) State two ways of acquiring software (1 mk)
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4. (a) Distinguish between impact and non impact printers (2 mks)
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(b) MICR and OMR (2 mks)
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5. Describe the following terms
(a) Website (1 mk)
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(b) Blog (1 mk)
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(c) Hyperlinks (1 mk)
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(d) Web portal (1 mk)
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6. List four stages of data collection (2 mks)
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7. Explain the role of the following ICT specialist
(a) Computer Technician (2 mks)
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(b) Information systems manager (2 mks)
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8. Distinguish between defragmentation of a disk and partitioning of a disk with
reference to operating systems (2 mks)
Defragmentation
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Partitioning
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9. (a) Give four advantages of DTP over a word processor (2 mks)
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(b) Differentiate between the following
(i) Kerning and tracking (2 mks)
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(ii) Margins and column guides (2 mks)
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10. Headache, back and neck pain may result from use of computers. State how each
of them can be minimized (2 mks)
Headache
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Back and neck pain
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11. Explain the meaning of the following terms as used in computer programming
(2 mks)
(i) Syntax
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(ii) Semantics
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12. (a) State two methods/tools that a system analyst uses to design a system (2 mks)
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(b) Give two reasons why maintenance phase in system development cycle is
necessary (2 mks)
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13. Explain the functions of the following network devices (2 mks)
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Bridge
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Gateway
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14. Differentiate between baseband and broadband signal as used in networking
(2 mks)
Baseband signal
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Broadband
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15. Identify two areas where computers are used today (1 mks)
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SECTION B (60 MARKS)
6

Answer question 16 and any other three questions from this section
16. Khetia supermarket pays 10% commission on sales that are above 20,000 kshs,
and 4% on any sales that are less than this target. However, no commission is
paid on the capital of the salesman.
(a) Design a pseudo code for a program that would: (7 mks)
(i) Prompt a user for sales and capital of a particular salesman
(ii) Calculate the commission and total amount
(iii) Display the commission and total amount on the screen for a particular
salesman
(b) Draw a flow chart for the above pseudo code (8 mks)
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17. (a) What is the hexadecimal equivalent of 7678 (3 mks)
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(b) Use one’s compliment to solve the following sum: -510 (2 mks)
(c) State two reasons for using binary in digital technology (2 mks)
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(d) Explain the role of a modem in data communication (2 mks)
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(e) Describe each of the following computer terminologies as used in data
representation (4 mks)
(i) Word
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(ii) Bit
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(iii) Byte
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(iv) Nibble
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(f) Convert 7.12510 to binary (2 mks)
18. (i) Name four data types used in spreadsheets (2 mks)
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(ii) Outline five advantages of an electronic spreadsheet over the traditional ledger
(5 mks)
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(iii) What is a chart wizard in spreadsheets? (1 mk)
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(iv) Name and explain the use of the following buttons found in spell-check dialog
box in reference to word processing (6 mks)
(a) Change
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(b) Ignore once
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(c) Add
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(v) What is a template in word processing? (1mk)
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19. (i) Describe three ways in which computers have positively impacted on education
(3 mks)
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(ii) (a) Simulation is one of the application areas of computers. What is meant by
the term simulation? (1 mk)
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(b) State three advantages of computer based simulation (6 mks)

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(iii) Differentiate between a software engineer and a computer engineer. (2 mks)
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(iv) Name three responsibilities that are carried out by a web administrator.
(3 mks)
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20. (i) List and briefly describe three components of a database system (3 mks)
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(ii) Define the following terms as used in a database (3 mks)
a. Attribute
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b. Database model
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c. Macro
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(iii) Explain three types of database models (6 mks)

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(iv) State three objectives of normalization (3 mks)
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Computer Studies Paper 1 Question Paper

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