A-LevelComputer ScienceSoftware development9618/23 · May/June 2023 · Q54 Marks

A program is designed, coded and compiled without errors. The compiled code is sent for testing.

(a)The program will be tested using the walkthrough method. Additional information will be needed before this method can be used. Identify this additional information and explain why it is needed. Additional information Explanation[3]
(b)Testing is completed and the program is made available to users. Some time later, changes are made to the program to improve the speed of response. State the type of maintenance that has been applied to the program.[1]

Mark scheme

Marking points from the official mark scheme (May/June 2023). The mark or mark type is shown in brackets.

[3] Max 3 marks
[3] Additional information:
[3] MP1 The (program/source) code/specification
[3] MP2 test plan // inputs/test data and expected outputs
[3] Explanation:
[3] MP3 The structure / design / algorithm of the program of the program needs to be known
[3] MP4 so that all paths through the program can be tested
[1] Perfective

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Topic: Software development, A-Level Computer Science (syllabus 9618). Structured question, 4 marks.
Source: A-Level Computer Science, May/June 2023 Paper 2 Variant 3, question 5.

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