Daily Practice · GCSE Computer Science

Daily Practice - GCSE Computer Science

Systems, data representation, networks, algorithms and programming.

7th January 2023

5 questions · GCSE · 123 questions in this band

1
Data Representation: Images, Sound and Compression
A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
2
Programming Practice: Writing and Refining Programs
A programmer wants any syntax error in their program to be reported before the program starts running at all. State whether a compiler or an interpreter behaves this way, and explain why.
3
SQL and Data Handling
Define the term 'primary key' as used in a database table.
4
Trace Tables and Binary/Hex Conversions
State how many different values can be represented using 5 bits, and explain your reasoning.
5
Systems Architecture
State the three stages of the fetch-decode-execute cycle in the order they occur.

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