A-LevelComputer ScienceSoftware development9618/23 · May/June 2022 · Q24 Marks

A program has been written to implement a website browser and maintenance is now required. One type of maintenance is called perfective. Name two other types of maintenance that the program may require and give a reason for each. Type 1 Reason Type 2 Reason

(a)A program has been written to implement a website browser and maintenance is now required. One type of maintenance is called perfective. Name two other types of maintenance that the program may require and give a reason for each. Type 1 Reason Type 2 Reason[4]

Mark scheme

Marking points from the official mark scheme (May/June 2022). The mark or mark type is shown in brackets.

[4] Dependent marks. One mark for type; one mark for matching reason.
[4] Type: Adaptive. Reason: To accommodate a change in the requirement / technology / legislation e.g. a new HTML version is available.
[4] Type: Corrective. Reason: The program does not operate as expected / contains a bug e.g. passwords are not hidden.

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Topic: Software development, A-Level Computer Science (syllabus 9618). Structured question, 4 marks.
Source: A-Level Computer Science, May/June 2022 Paper 2 Variant 3, question 2.

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