Daily Practice · GCSE Computer Science

Daily Practice - GCSE Computer Science

Systems, data representation, networks, algorithms and programming.

12th March 2025

5 questions · GCSE · 123 questions in this band

1
Systems Architecture
Which CPU register holds the address of the next instruction to be fetched?
2
Memory and Primary Storage
Which of RAM and ROM is volatile, meaning its contents are lost when the power is removed?
3
Secondary Storage
State the typical maximum capacity of a single-layer DVD.
4
System Software
Each pair from the previous question is stored using 2 bytes. Calculate the compression ratio achieved, given the uncompressed row (1 byte per pixel) uses 8 bytes.
5
Networks and Topologies
Give one advantage of a star topology compared with a mesh topology.

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