plumiEncryption, Encryption Protocols and Digital certificates: CAIE A‑Level Computer Science questions
Every CAIE A-Level Computer Science exam question on 17.1 Encryption, Encryption Protocols and Digital certificates, June 2024 and the specimen papers, with its mark scheme and examiner’s report.
Paper
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Exam
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Calculations
Q7(a)
The whole paper ↗Q7(b)
The whole paper ↗Q5(a)(i)
The whole paper ↗
Q5(a)(ii)
The whole paper ↗Q5(b)
The whole paper ↗
All 5 questions on Encryption, Encryption Protocols and Digital certificates, as a list
- June 2024, Paper 3, Q7(a) (3 marks): Describe what is meant by a digital certificate. [3]
- June 2024, Paper 3, Q7(b) (2 marks): Explain the role of a digital certificate in creating a digital signature. [2]
- Specimen, Paper 3, Q5(a)(i) (2 marks): Describe what is meant by symmetric key encryption. [2]
- Specimen, Paper 3, Q5(a)(ii) (2 marks): State two drawbacks of using symmetric key encryption. [2]
- Specimen, Paper 3, Q5(b) (2 marks): The symmetric key is to be exchanged before the message is sent. To exchange the key securely, the use of quantum cryptography is being considered. State two po
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