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Learning objective

Recognize the importance of verifying data after it has been transmitted and understand the potential causes of errors during this process, such as data loss, gain, or alteration due to interference.

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Exam focus

  • Read the explanation.
  • Check key terms.
  • Practise with linked questions.
Cambridge IGCSE Computer ScienceData transmission

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Quick explanation

Recognize the importance of verifying data after it has been transmitted and understand the potential causes of errors during this process, such as data loss, gain, or alteration due to interference

  • This point belongs to Methods of error detection, especially Methods of error detection outcomes.
  • You need to be able to recognize the importance of verifying data after it has been transmitted and understand the potential causes of errors during this process, such as data loss, gain, or alteration due to interference.
  • The key ideas to know are Understand and Identify.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

UnderstandIdentify

Why it matters

This objective helps connect Methods of error detection outcomes to exam-style questions, flashcards, and revision notes for Methods of error detection.

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Practice Questions7 linked questions

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Paper 1 structured question: Methods of error detection

Paper 1Computer Systems1 marks

Description

Data Transmission Errors

Data can be lost, gained, or altered during transmission due to various factors such as interference and network issues.

  1. a

    State one potential cause of data loss during transmission.

    Aim for approximately 1 distinct marking point.

    [1]
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