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A-LevelComputer ScienceObject-Oriented Programming (OOP)Oct/Nov 2021Paper 4 Q230 Marks

A program, written using object-oriented programming, stores pictures as objects. The program stores the dimensions of the picture (width and height), the colour of the frame (e.g. black), and a description of the picture (e.g. flowers). The class has the following attributes and methods. Description : STRING // stores a description of the picture Width : INTEGER // stores the width e.g. 30 Height : INTEGER // stores the height e.g. 40 FrameColour : STRING // stores the colour e.g. black Constructor() // takes all four values as parameters and sets them to the private attributes GetDescription() // returns the description of the picture GetHeight() // returns the height GetWidth() // returns the width GetColour() // returns the frame colour SetDescription() // takes the new description as a parameter and writes the value to description

📋 Examiner Report & Trap Analysis

Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...

🎯 Mark Scheme Breakdown

Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.

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About This A-Level Computer Science Question

Topic

This structured question tests Object-Oriented Programming (OOP) in A-Level Computer Science (syllabus code 9618). It is worth 30 marks.

Source

This question appeared in the Cambridge A-Level Computer Science Oct/Nov 2021 examination, Paper 4 Variant 1.

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