This document is meant to help the new graduates looking for the structure of Computer Studies paper 1.

1. Candidate Name:________________________________________class:_____
MARY QUEEN OF PEACE GIRLS’ SCHOOL
GRADE TWELVE (12) END OF TERM EXAMINATIONS
COMPUTER STUDIES 7010/1
PAPER 1
April, 2022 2 ½ Hours
TIME: 2 HOURS 30 MINUTES
Instructions to Candidates
1. Write your name and class in the space at the top of this page.
2. There are two sections in this paper. Section A and B.
Section A: there are eleven(11) questions. Answer all.
Section B: There are three (3) questions. Question one (1) is compulsory.
Choose any other question from either Question two (2) or three (3).
3. Write your answers in the spaces on the question paper.
4. Tick ( ) the question you have attempted in section B in the grid provided below.
Information for Candidates
1. The number of marks is given in brackets [ ] at the end of each question or part question.
2. Section A has 50 marks and section B has 20 marks.
3. Cell phone are not allowed in the Examination Room.
DO NOT TURN THIS PAGE UNTIL YOU ARE TOLD TO DO SO
This question paper consists of 12 printed pages
For Examiner’s Use
Marks
Section A
Section B Q1
Q2
Total Q3

2. 2
SECTION A [50 Marks
1. (a) Explain the meaning of the term Data capture.
_______________________________________________________________
_______________________________________________________________ [1]
(b) Fill in the output devices for the applications given in the table below.
[2]
(c) Give one advantage of using a touch screen as an input device by the general
public at a train station when buying tickets rather than using keyboard
and mouse.
_______________________________________________________________
_______________________________________________________________ [1]
2. (a) Define the term ‘User interface’, giving examples where appropriate.
____________________________________________________________
____________________________________________________________
____________________________________________________________ [2]
(b) Give three typical functions of an operating system.
Function 1______________________________________________________ [1]
Function 2______________________________________________________ [1]
Function 3______________________________________________________ [1]
3. (a) Explain the meaning of the term byte.
_______________________________________________________________
_______________________________________________________________ [1]
(b) Convert 4A (hexadecimal) to binary. Show your working.
_______________________________________________________________
_______________________________________________________________
_______________________________________________________________
_______________________________________________________________
[2]
Application Output
1 Alerting user of an error by a beep
2 Producing a large plan of a house

3. 3
4. The figure below shows an example of an optical mark sheet. State two advantages and
two disadvantages of a company using optical mark reader for stock control.
Advantage 1 __________________________________________________________ [1]
Advantage 2 __________________________________________________________ [1]
Disadvantage 1________________________________________________________ [1]
Disadvantage 2 ________________________________________________________ [1]
5. Mary Queen of Peace Girls’ School has computerized its library which use barcodes
and relational database.
(a) Explain what is meant by a relational database.
______________________________________________________________
______________________________________________________________ [2]
(b) Name the device that would be used to read barcodes and one item in the
library that can use barcodes.
Device _______________________________________________________ [1]
Item__________________________________________________________ [1]
(c) Each member’s record has a unique number. Give one use of this number
in the database.
______________________________________________________________ [1]

4. 4
6. (a) Explain the meaning of the term Random Access.
_______________________________________________________________ [1]
(b) Give one example where serial or direct access can be used.
Direct access___________________________________________________
Serial access____________________________________________________ [2]
(c) Give one disadvantage of serial access.
_________________________________________________________________
_________________________________________________________________ [1]
7. Convert the program flowchart below into a pseudocode.

5. 5
_____________________________________________________________
_____________________________________________________________
_____________________________________________________________
_____________________________________________________________
_____________________________________________________________ [3]
8. (a) Describe the differences between high level and low level languages.
_________________________________________________________________
_________________________________________________________________
_________________________________________________________________ [2]
(b) What is the relationship between object code and source code?
_________________________________________________________________
_________________________________________________________________
_________________________________________________________________ [2]
(c) Why are programs converted to machine code before they run?
_________________________________________________________________
_________________________________________________________________
_________________________________________________________________ [2]
9. Give two types of program code translators and state advantages of each.
Translator_________________________________________________________
Advantage_________________________________________________________ [2]
Translator_________________________________________________________
Advantage_________________________________________________________ [2]

6. 6
10. (a) (i) What is batch processing?
___________________________________________________________
___________________________________________________________ [2]
(ii) Give one example of an application which is suitable for batch processing.
___________________________________________________________
___________________________________________________________ [1]
(a) (i) What is real-time processing?
___________________________________________________________
___________________________________________________________ [2]
(ii) Give one example of an application which is suitable for real-time processing.
___________________________________________________________
___________________________________________________________ [1]
11. The manager of a car showroom uses a database to store information about cars he sells.
This is part of the database.

7. 7
(a) How many records are there in this part of the database?
__________________________________________________________ [1]
(b) How many fields are there in this part of the database?
__________________________________________________________ [1]
(c) The records shown are to be sorted in descending order of size of engine,
what is the registration of the first record in the database after it has been
sorted?
__________________________________________________________ [1]
(d) Give the name of the field that contains numeric data.
__________________________________________________________ [1]
(e) Identify the field type of the “Model” field.
__________________________________________________________ [1]
(f) Which field would be the key field?
__________________________________________________________ [1]

8. 8
SECTION B [20 MARKS]
1. Read the following scenario carefully and answer the questions that follow.
Description of existing system.
ABC Company is an airline booking film. Currently, the company uses a manual system for
processing bookings. Below is the information obtained from the clients.
 Name of customer
 Destination
 Fare
 Luggage price
 Ticket number
Description of proposed system
The Company wishes to have a new system that is computerized and web based. The system will
use on-line transactions which will be done in real time. The system will also have security
features to protect data.
(a) To gather information about the old system, the analyst decides to use questionnaires. Give
two reasons why this method is better than oral interviews.
(I) ______________________________________________________________ [1]
(II) ______________________________________________________________ [1]
(b) State two problems that will be identified with the old system.
Problem 1___________________________________________________________ [1]
Problem 2___________________________________________________________ [1]
(c) State the validation check being used in the manual system.
___________________________________________________________________ [2]
(d) Name two hardware items needed for the new computerized system to be installed
at the station.
1._________________________________________________________________ [1]
2._________________________________________________________________ [1]

9. 9
(e) Give one security threat this online system is likely to encounter.
__________________________________________________________________ [1]
(f) The diagram below shows the six stages of System Development Life Cycle
(SDLC). Fill in the blanks with an appropriate term.
1____________________________
2____________________________
3____________________________
4____________________________
5____________________________
6____________________________
[6]

10. 10
2. City uses a computerized traffic control system.
(a) State one benefits of using computerized traffic control systems.
1_________________________________________________________ [1]
(b) Describe the input, processing and output from this control system.
Input_____________________________________________________ [1]
Processing_________________________________________________ [1]
Output_____________________________________________________ [1]
(c) Describe what the traffic control program should do when an
emergency occurs.
___________________________________________________________
___________________________________________________________ [1]

11. 11
3. Read the following carefully

12. 12
Draw the trace table for the following sets of test data
(I) 5, 30, 20, -20, 10, -30
(II) 8, 0, 0, -10, 5, 20, 0, 0, 0
(I)
X N T A B C Output
[3]
(II)
X N T A B C Output
[2]