Daily Practice · GCSE Computer Science

Daily Practice - GCSE Computer Science

1st December 1997

5 questions · GCSE · 123 questions in this band

1
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.
2
Networks and Topologies
Give one advantage of a star topology compared with a mesh topology.
3
Network Security
Distinguish between the network security threats known as phishing and pharming.
4
Ethical, Legal, Cultural and Environmental Impact
Which piece of UK legislation controls how organisations must store and use people's personal data?
5
Network Protocols and Layers
Define the term protocol.

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