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Kst 308: Computer Science. Question Paper

Kst 308: Computer Science.

Course:Bachelor Of Science

Institution: Kenyatta University question papers

Exam Year:2013

KENYATTA UNIVERSITY
UNIVERSITY EXAMINATIONS 2012/2013
SECOND SEMESTER EXAMINATION FOR THE DEGREE OF BACHELOR OF SCIENCE (CROP IMPROVEMENT AND PROTECTION AND BACHELOR OF SCIENCE AGRICULTURE)
KST 308: COMPUTER SCIENCE.
DATE: Monday, 8th APRIL, 2013
TIME: 4.30 P.M-6.30 P.M
INSTRUCTIONS:

Answer ALL questions in section A and any TWO from section B.
SECTION A: [40 MARKS]
1. Discuss the functions of the following computer devices:
i. Input and
ii. Output [5 marks]

2. Define the terms:
i. Processor and
ii. Network [5 marks]

3. Briefly discuss two functions of each of the software’s
i. Operating system and
ii. Web browser. [5 marks]

4. Why is it important to defragment your disk? [5 marks]

5. What is Anti-virus and what is its purpose in a computer [5 marks]
6. At the lowest level data operates in bits. Use the knowledge you learnt about data and its transmission to convert.
(i) 4510 to binary and
(ii) 2130 10 to binary [5 marks]
7. Convert the
(i) 11012 to its Decimal equivalent and
(ii) 1C316 to its binary equivalent [5 marks]
8. Give two functions of a network [5 marks]

SECTION B:
Answer any TWO questions (30 marks)
9. Computers can be classified according to:
• Size
• Category/generation
(i) Discuss each of the categorization by size giving a reason why each might be needed.
[7 marks]
(ii) Discuss each of the categorization /generation mentioning at least two unique characteristics of computers in a specific generation. [8 marks]
10. (a) Think of an agricultural institution or agency; discuss what will comprise a computerized system for such an institution. Break your write up into sub-topics for each component and explain how the components will be useful to the system. [5 marks]
(b) Discuss three benefits that an agricultural institution might benefit from adopting internet based technologies in the organization. [6 marks]
(c) Explain the difference between analogue and digital signals giving an example for each.
[4 marks]
11. (a) What are some three (3) of going for customized software. [6 marks]

(b) Why would you advise an organization to go for customized software instead of an off-the-shelf package? Give two reasons. [5 marks]
(c) Auxiliary or backing storage devices are normally described as mass storage devices. What is mass storage? Give two examples of such devices. [4 marks]

12. (a) Discuss the four (4) features of each of the following computer software:
(i) Word processor.
(ii) Spreadsheets.
(iii) Databases
[11 marks]
(b) A company needs to acquire a printer. List two considerations you will make to decide on what printer to buy. [ 4 marks]

Kst 308: Computer Science. Question Paper

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