Education question paper for IGCSR ICT

1. CAMBRIDGE CURRICULUM
UNIT TEST 2 – January 2022
INFORMATION AND COMMUNICATION TECHNOLOGY – GRADE – 10
Date: 27-01-22 Time: 45 Minutes.
Name: ______________________________ Roll No___________ Sec______
General Instructions: -
1. All questions are compulsory.
2. Marks for each question is indicated in the bracket [ ].
3. Please check that the questions are printed on all pages.
This question paper consists of 2 printed pages.
Maximum Marks: 20 Marks Obtained: _______
QuestionNo. 1 2 3 4 5 6 7 8 9 10 11
Marks
Obtained
Maximum
Marks

2. Answer All the Questions
1 The systems life cycle is shown. The Implementation, Design, Evaluation,
Documentation, Development and testing stages are missing. Write these
stages into their correct places.
2
2 Tawara High School has developed a new computerized system to timetable
lessons and examinations. The school needs the new system to be in use
before the start of the new school year. The school is planning to implement
the new system using either direct changeover or parallel running.
(a) Discuss the advantages and disadvantages of using direct changeover
compared with parallel running as a method of implementing the system.
In your answer name the method you would use, giving four reasons for
your choice.
Max three from:
Advantages
 Benefits are immediate whereas in parallel it takes time to fully implement
 Costs are reduced as there is only one system to maintain but in parallel
there are two systems and two sets of workers
 Data only needs to be entered into one system but with parallel running
data has to be entered into two systems therefore is more time consuming
 Less possibility of bugs as the system will have been fully tested
Disadvantages
 If the system fails there is no backup but in parallel running if the system
 fails then the old system is still operational//risk of loss of data
4

3.  Staff have to be trained on the new system as it is implemented with
parallel
 it is possible to train staff gradually.
3 During the analysis stage for a new computer system, the systems analyst
could examine existing documents.
Name two other methods the systems analyst could use to research the
current system. Give one benefit of each.
Method1................................................................................................
Benefit…................................................................................................
…..........................................................................................................
Method2................................................................................................
Benefit…................................................................................................
…..........................................................................................................
Interview Benefit one from: The useris more open and honest with the answers Questions can be added to/extended
Questions can be modified Can see body language/facial expressions
Questionnaire Benefit one from: Faster to complete all questionnaires Cheaper to produce questionnaires than
pay/employ an interviewer Individuals can remain anonymous therefore they are more truthful More people can
answer the questionnaire than can be interviewed They can fill it in in their own time
2
4 When the new computer system has been produced, it will need to be tested.
There are three
types of test data that can be used to test a system, normal, abnormal and
extreme.
(a) Explain what is meant by normal, abnormal and extreme test data.
Normal
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Abnormal
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Extreme
3

4. ............................................................................................................
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Normal
Data is within the range of acceptability
Abnormal
One from:
Data outside the range of acceptability
Data that is of an incorrect type
Extreme
Data that is on the boundary/limit of acceptability
5 A teacher is creating a spreadsheet that will record the grades students
achieved in recent tests and compare the average grades of these tests with
the students’ forecast grades. The grading the teacher is using awards 1 for
the highest grade down to 10 for the lowest. The teacher has created a
validation rule on the grade entered. Give examples of data used to test the
validation rule.
Your answers for abnormal test data must be for a different reason in each
case.
Type of test data Example of test data
Normal
Abnormal
Abnormal
Extreme
One from: Normal data: Any integer between 1 and 10 Two from: (must be a different type)Abnormal data: Any
number outside the range/alphabetic/symbol/negative number/decimal number One from: Extreme: 1 or 10
2

5. 6 In System life cycle, when analyzing the current booking system, the
systems analyst must identify the user requirements.
Explain why it is important for the systems analyst to do this.
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Tick (✓) the relevant stage of the systems life cycle for each of the following
activities
Activity
Analysis
(✓)
Development
and testing
(✓)
Evaluation
(✓)
Identifying the problems
with the current system
Comparing the solution with
the original task
requirements
Create the file structure
Identify limitations to the
new system and
improvements to be made
3
2
7 A company is planning to improve its computer system. They have employed
a systems analyst who is recording and analyzing information about the
current system.
Describe why he needs to identify the inputs, processing and outputs of the
current system.
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2

6. Helps the systems analyst to understand howthe systemworks The new systemthat is designed will have to deal
with similar inputs and outputs as the current systemYou would need to have the inputs/outputs to showthe
input/output devices that are needed You would need to have the processing to show the processing devices that are
needed You would need to have the processing to showthe storage/diskspace that are needed
9 A hospital is creating a database to store blood donors’ medical details. Name
the most appropriate validation check for the Health_number.
Range check/ length check
1
10 A large organization is introducing a new computer system.
Compare and contrast pilot implementation with phased implementation of
the new system.
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Max four from:
Neither introduce the system as a whole new system (across the company) /
both introduce system in parts
Both allow for the performance of the new system to be thoroughly assessed
/
tested
Both allow gradual training
Both take time to introduce the whole of the new system (to the whole
company)
Only one distinct part is being used so safer to implement
4

7. Max four from:
Pilot implementation
Whole system is implemented in one branch / one office at a time
If the new system fails only one branch is affected
Implemented in a company which has many branches all doing the same
work
Phased implementation
New system is implemented part by part
Only one part is being implemented but could affect other departments
To gain full marks at least one point from each section is needed, both pilot
and phased must also have been compare