Daily Practice · GCSE Computer Science

Daily Practice - GCSE Computer Science

Systems, data representation, networks, algorithms and programming.

14th December 2025

5 questions · GCSE · 123 questions in this band

1
SQL and Data Handling
State what a foreign key is used for.
2
Trace Tables and Binary/Hex Conversions
Convert the denary number 39 to an 8-bit binary number, showing your working.
3
Systems Architecture
State the three stages of the fetch-decode-execute cycle in the order they occur.
4
Memory and Primary Storage
A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
5
Secondary Storage
Give one reason why RAM on its own is not enough, and a computer also needs secondary storage.

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