Name Index No Class

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NAME…………………………………………………………..INDEX NO……………CLASS………….

SCHOOL………………………………………………………..CANDIDATES SIGNATURE………….

DATE…………………….………………

451/1

COMPUTER STUDIES

PAPER 1

(THEORY)

FEB/MARCH 2014

TIME: 2½ HOURS

LAINAKU JOINT EXAMINATION – 2014

Kenya Certificate of Secondary Education

COMPUTER STUDIES

PAPER 1

(THEORY)

TIME: 2½ HOURS

INSTRUCTIONS TO CANDIDATES

This paper consists of TWO Sections A and B
Answer all questions in Section A
Answer question 16 (compulsory) and any other THREE question in section B
All answers should be written in the space provided in the question paper

FOR OFFICIAL USE ONLY:

Section / Question / Candidates
Score
A / 1-15
B / 16
17
18
19
20
Total Score

This paper consists of 15 printed pages.

Candidates should check the question paper to ascertain that

all pages are printed and no questions are missing

SECTION A (40 MARKS) Answer all the questions in this section

Define the following terms( 2 marks)

a)Drop Cap ……………………………………………………………………………………………………………………………………………………………………………………………………………….

b)Protocol

……………………………………………………………………………………………………………………………………………………………………………………………………………….

A student was reading through a daily newspaper on different types of data communication media. As a computer student, how will you assist him define the term data communication media? (1Mark)

…………………………………………………………………………………………………………………………………………………………………………………………………………………………

State four functions of Read-Only Memory(4 marks)

Give three reasons why a mobile phone is regarded as a computer(3 marks)

Most computerized security systems make use of Biometric analysis, name three physical features of human beings that can be considered in this analysis. (3 marks)

State any three functions of Central Processing Unit(3 marks)

Briefly explain any two types of errors that can be encountered during program testing (2 marks)

Differentiate between a Transaction file and a Master file.(2mks)

………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………

List four ways of acquiring software in an organization.(2mks)

………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………

Distinguish between:(4mks)

Mouse pointer and insertion point ……………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………
A table in word processing application and a table in database application.

The protection of the environment must concern us all if we are to bequeath a better world for the future generation. Explain any two ways in which the internet can be used to facilitate campaigns for environment protection. (2mks)

One of the functions of operating system is file management within the secondary storage medium.State two types of files. (2mks)

List four operations an operating system can perform on a file. (2mks)

Suggest any three reasons why reservation systems are no yet fully implemented by bus operating companies in Kenya. (4mks)

State any four ways of ensuring that the passwords remain effective as a security control measure. (4mks)

SECTION B (60 MARKS)

ANSWER QUESTION 16 AND ANY OTHER THREE QUESTIONS

FROM THIS SECTION

16. a) Name the two major developments during the second generation programming languages (2 marks)

b )Draw a program flow chart and write a pseudo code to give out the sum and average of the first 100 numbers in the series: 5, 10, 15, 20, 25… (10 marks)

c) Give at least three differences between a compiler and an interpreter(3 marks)

17.a) Convert

(i).0.111011.0102 to Octal(2 marks)

(ii).3218 to itsBinary equivalent( 2 marks)

(iii).5E616 into Binary( 2 marks)

(iv).1101000101112 to hexadecimal(2 marks)

b) Give the reason why octal and hexadecimal numbers are preferred to binary(1 mark) …………………………………………………………………………………………………………………………………………………………………………………………………………………………

c) Briefly Explain the three data coding schemes(6 marks)

18.a) Draw give any two advantages of the network topologies below(6 marks)

(i).Hierarchical

………………………………………………………………………………………………………………………………………………………………………………………………………………………

(ii).Ring

c)Give two application areas of Bluetooth technology(2 marks)

c) Briefly describe the three components of satellite transmission(3 marks)

d)List Four Network devices(2 marks)

e) State two advantages of wireless technology(2 marks)

19.

a)Write a formula that has been entered in cell J2(2 marks)

b)Differentiate between the following excel data types(4 marks)

(i).Labels and values

……………………………………………………………………………………………………………

(ii).Function and formula

c) Differentiate the following terms as used in word processing(5 marks)

(i).Insert and Type over

(ii).Copying and Moving

(iii).Backspace and Delete

(iv).Undo and Redo

(v).Auto complete and Autocorrect

d). Explain the following database features( 3 marks)

(i).Table/File.

(ii).Report

(iii).Queries

(iv) .Form

20.a) List and explain the three processing methods(6 marks) …………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………

b) Outline the services offered by the internet( 2 marks)

c)Give three advantages of automated production( 3 marks)

d)List two attributes of a system analyst(2 marks)

e)Identify any four ICT institutions that one can enroll for ICT course(2 marks)