Form 4 Final Examination 2003

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Form 4 Computer Studies

Final Examination

2003

 Instructions

Answer all questions.  The time allowed is TWO HOURS. 

 

Section A – 48 marks

 

  1.  What is a system development cycle? [2]
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  2. What are the parts of a feasibility study? [2]
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  3. What is a pilot system? [2]
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  4. What is parallel running? [2]
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  5. What does phased implementation mean?[2]
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  6. What is top down design? [2]
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  7. What is system testing and how is it different from acceptance testing? [4]
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  8. What does file conversion mean? [2]
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  9. What is technical documentation? [2]
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  10. What is user documentation? [2]
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  11. What does step wise refinement mean?[2]
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  12. Draw system flowchart shape used to show that data is keyed in manually? [1]





     
  13. Make a system flowchart that shows how a transaction file and a master file can be combined to make a new master file. [5]








     
  14. What methods can you use to gain information about the existing system during requirements analysis? [3]
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  15. Why is it important to work with end users closely when developing a new system (JAD)? [2]
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  16. What does rapid application development (RAD) mean? [2]
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  17. Which part of the development phase do you think is the most important - give reasons? [2]
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  18. How have employment patterns changed since computers have become common in the workplace? [3]
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  19. Describe three characteristics of a cashless society? [3]
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  20. Describe a system that uses cameras to photograph cars passing through red lights at an intersection.  Describe the processing, inputs , data storage and outputs.[3] 
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Section B – 52 marks

For each of the following problems

·        build a structure chart

·        Develop the structured English algorithm.

 

  1. Input the side lengths of a rectangle and display the area. [4]

     
  2. Input a single integer and display “pass” if the integer is greater than 49 [5]

 
  1. Input a single integer and display “pass” if the integer is greater than 49, otherwise display “fail” [5]

 
  1. Input a single integer and display “Distinction” for marks > 80, “Credit” for marks between 60 and 79, “Pass” for marks between 50 and 59, and “Fail” otherwise. [8]
     
  2. Input 5 marks for an examination and return the average mark. [6]
     
  3. Input a password and return an error message until the password is entered correctly. [5]
     
  4. Suppose an array of integers exists that contains 13 test results.  The name of the array is score.  The array values might look like this -
    score(1)=45, score(2)=67   …   score(13)=87

Make an algorithm that will display the maximum score. [7]


 
  1. Design some screens for a shop employee information system.  Each employee has a name, gender, date of birth, starting date, position, home address, e-mail and contact number.  Employees may leave the shop at which time their record is erased.  Employees may need to have their record changed if they get promotion. Or change home details.  New employees need to be added to the system.  The system should have a print option for displaying a list of names and addresses. [10]