0478.1.0.01 — Understand how data is encrypted using • Asymmetric encryption includes the use of: past paper questions
Real questions on 0478.1.0.01 — understand how data is encrypted using • asymmetric encryption includes the use of
The newest 20 of 77 written questions. Open one to see it on the real paper.
- 0478/11 · May/June 2026 · Q2a(iii)[1]
Give the name of one component that is used in the execute stage of the FDE cycle.
See it on the paper → - 0478/11 · May/June 2026 · Q2b[2]
Explain the advantages of the smartphone having a quad-core processor instead of a dual-core processor.
See it on the paper → - 0478/11 · May/June 2026 · Q2c(i)[2]
Identify two input devices that could be built into the smartphone. (i)
See it on the paper → - 0478/11 · May/June 2026 · Q2c(ii)[2]
Identify two output devices that could be built into the smartphone.
See it on the paper → - 0478/11 · May/June 2026 · Q3a[1]
Give one other example of a number system.
See it on the paper → - 0478/11 · May/June 2026 · Q3b[1]
Convert the hexadecimal number 2A to an 8-bit binary number.
See it on the paper → - 0478/11 · May/June 2026 · Q3c[1]
Convert the hexadecimal number 101 to a 12-bit binary number.
See it on the paper → - 0478/11 · May/June 2026 · Q3d[1]
Convert the binary number 01110001 to a hexadecimal number.
See it on the paper → - 0478/11 · May/June 2026 · Q3e[1]
Convert the binary number 001011011000 to a hexadecimal number.
See it on the paper → - 0478/11 · May/June 2026 · Q3f[4]
Add the binary numbers 10011101 and 11110000 using binary addition. Give your answer in binary. Show all your working. 1 0 0 1 1 1 0 1 + 1 1 1 1 0 0 0 0
See it on the paper → - 0478/11 · May/June 2026 · Q4a[1]
State the purpose of the optical mouse.
See it on the paper → - 0478/11 · May/June 2026 · Q4b[4]
The USB cable transmits data using the serial half-duplex data transmission method. Describe how the serial half-duplex data transmission method transmits the data.
See it on the paper → - 0478/12 · May/June 2026 · Q4c(i)[1]
Give one method of encryption that could be used.
See it on the paper → - 0478/12 · May/June 2026 · Q4c(ii)[1]
State what is meant by an encryption key.
See it on the paper → - 0478/12 · May/June 2026 · Q4c(iii)[1]
State the name given to the encrypted data.
See it on the paper → - 0478/13 · May/June 2026 · Q2e(i)[2]
Give two types of encryption that could be used.
See it on the paper → - 0478/13 · May/June 2026 · Q2e(ii)[2]
Describe what is meant by an encryption key.
See it on the paper → - 0478/11 · October/November 2025 · Q2e(i)[1]
Tick (3) one box to show the correct statement about symmetric encryption. A Encrypted text is known as plain text. B The most secure form of encryption. C The encryption key is shared with any device receiving the encrypted data. D Two different keys are used.
See it on the paper → - 0478/11 · October/November 2025 · Q2e(ii)[1]
Give one other type of encryption that could be used.
See it on the paper → - 0478/11 · May/June 2025 · Q6a[8]
Complete the paragraph about asymmetric encryption. Use the terms from the list. Some of the terms in the list will not be used. You may use a term more than once. algorithm hardware binary cipher text hexadecimal public meaningless readable transmission compression plain text error private unreadable Data is encrypted...
See it on the paper →
What examiners said
Most candidates were able to select the correct missing terms. The most common incorrect answer was the use of ‘unreadable’ in place of ‘meaningless’. It would be beneficial for candidates to understand that encryption does not make the data unreadable. The data can still be read; it will just be scrambled, so it will not mean anything to a person who attempts to read it.
— Examiner report, May/June 2025, 0478/11 Q6(a) (Cambridge)
Most candidates were able to recognise that asymmetric would be more secure.
— Examiner report, May/June 2025, 0478/11 Q6(b) (Cambridge)
Many candidates were able to demonstrate a good understanding of HTTPS. The most common responses included the use of encryption to protect the data, with many also identifying the use of SSL or TLS. The stronger responses also included a description of digital certificates and how these were transmitted from the server to the browser. Some responses inaccurately described the browser as sending t...
— Examiner report, February/March 2025, 0478/12 Q5(c)(ii) (Cambridge)
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