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Cambridge IGCSE Computer Science practice

Paper 1 structured question: Methods of error detection

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Methods of error detection

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Paper 1Computer Systems1 marks

Error detection in data transmission is critical for ensuring data integrity.

Description

Error Detection Methods

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

  1. a

    State one method used to detect errors in transmitted data.

    Aim for approximately 1 distinct marking point.

    [1]

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Paper 1 structured question: Methods of error detection

Paper 1Computer Systems3 marks

Description

Error Detection Overview

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

  1. a

    Explain how a checksum works in error detection.

    Aim for approximately 3 distinct marking points.

    [3]