Answers For System Lifecycle

These are notes made by my ICT teacher. GOD BLESS HER! i hope these help

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  • Created by: mar-rii
  • Created on: 07-06-09 19:54
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System Lifecycle
Here are some related past paper questions to try:
1) A company has a problem that they have analysed. Before the solution is implemented it must be designed.
Identify four things that need to be designed. [4]
Four answers from:
Design any documents needed
Design the data structures
Design the screen layouts/forms.
Design the testing plan
Design the outputs/reports
Design the hardware requirements
Design the software requirements
Design any validation rules needed.
2) When an ICT system is developed it is documented.
a) Why is documentation important? [1]
One answer from:
Writing user instructions so the people who are going to use the system know how to use it.
Explaining how the system was developed & tested to prove the person/company did create the system should
anyone else pretend they made it.
Explaining how the system was developed & tested so that if problems occur technical staff can use it to help them
put right the problem.
Trouble-shooting guide to provide the users with help so that they can work out what they are doing wrong & how
to put it right when they come across problems.
Listing hardware requirements so all the necessary hardware is available for the system to run properly.
Technical documentation so that the ICT technicians know how to solve problems if something goes wrong with the
system and how to do upgrades if the system needs to be developed further.
b) Describe two forms of evidence the developer might produce to prove the system works as required. [2]
Two answers from:
A statement of what works & what does not work when comparing the requirements with test results.
Screen prints of tests being carried out successfully.
Annotated printout of tests.
Results of user testing
Demonstration of system.
User feedback e.g. completed questionnaires by users.
3) A mail order company introduces a new database to hold its customer records.
a) The system is evaluated. Give three things that an evaluation report should contain. [3]
Three answers from:
User feedback
Analysis of user feedback
Identification of good/bad points of the solution
Identification of any limitations of the system
Any future developments needed
Comparison with brief/original problem/requirements
Comparison with designs
How the system was tested
b) A customer of the mail order company suspects that information about them is incorrect. How does the Data
Protection Act help the customer with this problem? [2]
Two answers from:
Allows the customer to demand/ask/request to see the data that is held about them so they can check it is
accurate
If the data is inaccurate or excessive the customer can insist it is changed or deleted
If the Data Protection Act is not being followed then the customer can contact the Data Protection
Registrar/Ombudsman and ask him/her to deal with the company and sort out the problem
4) A company is considering upgrading its existing computer system.
a) Identify one way an analyst could collect information about the current system. [1]

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Page 2

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One answer from:
Interview people who use the current system
Ask people who use the current system to complete questionnaires
Observe the current system being used
Collect documents that the company use & analyse them
b) State two items that would be included in an analyst's report.…read more

Page 3

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If it speeds up the time taken to serve students but this doesn't result in
more students using the canteen they might need fewer staff on the tills
because fewer staff will be able to serve the same number of students in
less time than before
An IT technician might need to be employed maybe just part time to look
after the new system, a job which wasn't needed before
Barcodes might be used to identify Using a barcode scanner will usually make it quicker…read more

Page 4

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A software company has developed some new software for preparing school reports. It sends a copy of the
software on CD-ROM to teachers and asks them to try it. Afterwards the company manager writes an evaluation.
Describe the sections that should be included in the evaluation. [6]
Six answers from:
Comparison of the finished system with the design specification and the original aims & objectives of the system.
What the software can do/advantages.
What problems were encountered with the software/disadvantages.…read more

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Get rid of name & address The user's name & address isn't needed for the purpose of the
survey & if the survey is anonymous it might encourage people
to be more honest.
9) The manager of a local cinema has employed a systems analyst to update the present administration system.
a) Give two methods the analyst might use to collect data about the present system. [2]
Two answers from:
· He could interview the staff/manager/customers.…read more

Page 6

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Describe one other stage that will need to be undertaken before the system is updated. [2]
Any paired answer from:
He may need to produce a feasibility report [1 mark] so the manager can make the decision whether to go ahead
or not. [1 mark]
He will need to identify any problems with the present system [1 mark] in order to make sure the new system
solves them.…read more

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The costs may be less than other methods as only one system is being used.
All training could be done in one go.
- Phased implementation.
Less of a `shock' to people running the system as they have more time to get used to the new system.
Problems with the new system will not cause huge company wide problems.
Training could be directed at key personnel before each phase i.e.…read more

Page 8

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Design any validation that is needed [[1 mark] to automate the error checking on input data. [1 mark]
Design the user interface [1 mark] to ensure that users will find the switch from 1 system to another as stress free
as possible. [1 mark]
Design backup procedures [1 mark] to fit in with the organisation of the office and to prevent loss of data. [1 mark]
Design a test plan [1 mark] to ensure that all eventualities are tested so the system works as anticipated.…read more

Page 9

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State two reasons why documentation is important.…read more

Page 10

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Examples of input e.g. forms, examples of output e.g. reports, letters & output screens
22) a) There are a number of stages in the development of a new ICT system. State four tasks carried out during the
design stage. [4]
Four answers from:
Design of documents
Design of data structure e.g. what field names, what data types, what field sizes etc
Design of input forms
Design of input screens/user interface
Design of output screens
Design of printed output e.g.…read more

Comments

Ayman.Ahmed

excellent 

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