Daily Practice · GCSE Computer Science

Daily Practice - GCSE Computer Science

Systems, data representation, networks, algorithms and programming.

14th August 2024

5 questions · GCSE · 123 questions in this band

1
Data Representation: Number Systems
Convert the denary number 45 to hexadecimal.
2
Data Representation: Images, Sound and Compression
A mono sound clip has a sample rate of 4000 Hz and lasts 2 seconds. Calculate the total number of samples taken.
3
Programming Practice: Writing and Refining Programs
State the correct order of the three operations used to read data from a text file.
4
SQL and Data Handling
State what a foreign key is used for.
5
Trace Tables and Binary/Hex Conversions
Convert the denary number 39 to an 8-bit binary number, showing your working.

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