Daily Practice · GCSE Computer Science

Daily Practice - GCSE Computer Science

Systems, data representation, networks, algorithms and programming.

12th February 2023

5 questions · GCSE · 123 questions in this band

1
Network Security
A simple cipher shifts every letter 2 places forward in the alphabet, wrapping around so Y becomes A and Z becomes B. Encrypt the plaintext CAT using this cipher.
2
Ethical, Legal, Cultural and Environmental Impact
State whether the source code of proprietary (closed source) software is normally available for the public to view.
3
Network Protocols and Layers
Define the term protocol.
4
Algorithms
An array contains [9, 2, 6], to be sorted using insertion sort. Show the state of the array after each new element has been inserted into its correct position.
5
Translators and Integrated Development Environments (IDEs)
A program compiles and runs but always outputs an average that is too small. State the type of error and explain why the translator did not report it.

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