Cambridge IGCSE Computer Science practice

Paper 1 structured question: Methods of error detection

Try the question first, then check the answer and practise the same topic again.

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Paper

Marks

Topic

Methods of error detection

Exam-style question

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Paper 1Computer Systems3 marks

Understanding error detection methods is essential for data communication.

Description

Error detection methods include parity checks, checksums, and echo checks, each with its own mechanism for identifying errors.

a
Explain how a checksum works in error detection.
Your answer
Aim for approximately 3 distinct marking points.
[3]

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Paper 1Computer Systems1 marks

Description

Various methods are used to detect errors in transmitted data, including parity checks, checksums, and echo checks.

a
State one method used to detect errors in transmitted data.
Your answer
Aim for approximately 1 distinct marking point.
[1]