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Data transmission · Cambridge IGCSE 0478

2.3 Encryption

2.3 Encryption appeared in 6 of the 6 years from 2020–2025, worth 203 marks across 19 questions — about 10.68 marks each.

Based on 71 real Cambridge past papers, 2020–2025.

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Questions per year

How many Computer Science questions tagged to this topic appeared each year.

  • 20204
  • 20213
  • 20224
  • 20231
  • 20245
  • 20252

Appearance history

Most recent
2025
First in range
2020
Years since last
0
Longest gap
0 years

Historical occurrence only — not an exam prediction.

Related topics

Topics that most often share a question with this one.

2.1 Types and methods of data transmission 5.3 Cyber security 5.1 The internet and the world wide web 1.3 Data storage and compression 2.2 Methods of error detection

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