### SECTION A (40 Marks)

Answer ALL questions in this section in the spaces provided
1.

State one main reason why typing tutor is recommended to be used by computer students.

1 marks

2.

Give three main ways of classifying computers.

1.5 marks

3.

Peter was sent to buy computers for the students' laboratory. He was supposed to take into account the following factors.
• Processor speed
• Memory capacity
• Compatibility
Give three main reasons for taking into account the above factors.

1.5 marks

4.

Basic computer setup and cabling is a very important concept to be taught in a computer class. Give two reasons to support the above concept.

2 marks

5.

State any two factors to be considered when selecting hard copy output devices. State any two factors to be considered when selecting hard copy output devices.

2 marks

6.

State four benefits of using a computer in a school store.

2 marks

7.

Define the following terms as used in word processing
(i)Pagination

(ii)Moving-

(iii)Indenting

(iv)margins

4 marks

8.

You have been asked to change your password state a precaution you need to take in order to avoid each of the following.
(a) Piracy

2 marks

9.

(a) State two advantages of using a questionnaire for gathering information. (2mks)

(b) Give three factors to consider when designing the output in program development. (2mks)

4 marks

10.

(a) Differentiate between pure binary and BCD code as used in data representation. (1mk)

(b) Convert 2D1${6}_{16}$ directly to binary. (2mks)

3 marks

11.

State the stages of system development in their logical sequence

3.5 marks

12.

Explain any two cultural effects as a result of use of ICT.

4 marks

13.

Name three responsibilities that are carried out by network support professionals.

3 marks

14.

Give three software requirements mandatory in a computer lab.

3 marks

15.

A school intends to set-up e-mail. List 4 activities likely to be provided by mails e-mail facility.

2 marks

### SECTION B (60 Marks)

Answer question 16 (compulsory) and any other THREE questions from this section
16.

The gross salary of employees of Becam Technology Centre is based on basic salary; the basic salary is based on grade and additional benefits as follows, a. Employees who have worked for more than 5 years receive an additional pay of 5 % to their basic salary, b. Monthly commissions are based on monthly sale of computers and accessories profit as follows:

 Monthly sales Profit Commission Rate (%) Above 100,000 20 Between 50,000 and 100,000 15 Between 0 and 50,000 5 Below 0 Deduction 5% from their basic.

(a). Draw a flow chart that would be used to calculate the gross salary. (14mks)

(b)Write down the output if the employee worked for ten years, with a grade that earns Kshs. 10,000 and he made a profit of 55,000. (1mk)

15 marks

17.

(a) Define the following terms as used in spreadsheet. (4mks)
i. Absolute referencing

ii. Value

iii. Worksheet

iv. Workbook

(c)

(i) Name four types of database models (2mks)
(ii) Give three parts of a report layout in design view. (3mks)

15 marks

18.

(a) State three major types of Networks. (3mks)

(b) Give the full forms of the following acronyms (2mks)
UTP

BNC

RJ-45

EMI

(c). (i) List 5 advantages of fiber optic cables. (5mks)

(ii) List two disadvantages of fiber optics (2mks)

(d) State three types of hubs

15 marks

19.

(a) Describe three different ways a computer may store negative numbers. (6mks)

(b) Give the acronym name for the following (3mks)
(i) BCD

(ii) ASCII

(iii) EBCDIC

(c) State and describe any two areas of Artificial Intelligence (2mks)

(d) What is Virtual reality? (1mk)

(e) List three components of a Virtual reality gear. (3mks)

15 marks

20.

a) Define the term operating system (1mk)

b) Describe any four functions of the operating system (4mks)

c) Explain how one can manage his/her disks using windows. (6mks)

d) Explain with the use of DOS how one can create a text file in C: called John, with text Welcome
Home. (4mks)

15 marks

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