Daily Practice · GCSE Computer Science

Daily Practice - GCSE Computer Science

Systems, data representation, networks, algorithms and programming.

25th June 2025

5 questions · GCSE · 123 questions in this band

1
Producing Robust Programs
A 'quantity' field on a website must only accept whole numbers from 1 to 10. Which validation check identifies that 15 has been entered?
2
Boolean Logic
A logic circuit has inputs C and D. C feeds into a NOT gate; the output of the NOT gate and D feed into an OR gate, giving output Y. Write the Boolean expression for Y and state its value when C = 1 and D = 0.
3
Data Representation: Number Systems
Convert the denary number 5 to a 4-bit binary number.
4
Data Representation: Images, Sound and Compression
State one example of a file format that commonly uses lossy compression.
5
Programming Practice: Writing and Refining Programs
Give one specific way this code could be refined without changing what it does: a = 5, b = 3, c = a + b, PRINT c

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