plumiDefensive design: OCR GCSE Computer Science questions
Every OCR GCSE Computer Science exam question on 2.3.1 Defensive design, 2022–2025, with its mark scheme and examiner’s report.
Paper
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Exam
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Calculations
Q1(b)(i)
The whole paper ↗Q5(d)
The whole paper ↗Q4(b)
The whole paper ↗Q8(a)
The whole paper ↗Q9(c)(i)
The whole paper ↗Q5(b)
The whole paper ↗Q4(a)
The whole paper ↗Q5(b)(i)
The whole paper ↗Q7(a)
The whole paper ↗Q8(b)(i)
The whole paper ↗
All 10 questions on Defensive design, as a list
- June 2025, Paper 2, Q1(b)(i) (3 marks): Complete the algorithm for the program. num = input("Enter a number between 1 and 100") if num AND then print("accepted") print("not accepted") endif [3]
- June 2025, Paper 2, Q5(d) (6 marks): As part of the security system, the user is asked to choose a 4-digit value for their PIN. This PIN cannot be 1234 or 4321 Create an algorithm that: • takes the
- June 2024, Paper 2, Q4(b) (2 marks): Describe one method of defensive design that can be used when creating the program. [2]
- June 2024, Paper 2, Q8(a) (4 marks): Describe two ways to improve the maintainability of the algorithm. 1 2 [4]
- June 2024, Paper 2, Q9(c)(i) (4 marks): Write an algorithm to: • take the height jumped as input • output "VALID" or "NOT VALID" depending on the height input. You must use either: • OCR Exam Referenc
- June 2023, Paper 2, Q5(b) (6 marks): Validating inputs can reduce errors when a program is being run. Identify two methods of validation and explain how they can be used on this game. Validation me
- June 2022, Paper 2, Q4(a) (2 marks): Give two ways that the maintainability of this program could be improved. 1 2 [2]
- June 2022, Paper 2, Q5(b)(i) (5 marks): Complete the following program to validate the inputs. You must use either: • OCR Exam Reference Language, or • a high-level programming language that you have
- Specimen, Paper 2, Q7(a) (4 marks): Explain, using examples from the program, two ways to improve the maintainability of the program. 1 ………………………………………………………………………………………………………………. …………………………………………
- Specimen, Paper 2, Q8(b)(i) (3 marks): Complete the following program to output "Invalid input" if the data does not meet the validation rule. You must use either: • OCR Exam Reference Language, or •
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