Daily Practice · GCSE Computer Science

Daily Practice - GCSE Computer Science

Systems, data representation, networks, algorithms and programming.

14th February 2023

5 questions · GCSE · 123 questions in this band

1
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.
2
Programming Practice: Writing and Refining Programs
State the correct order of the three operations used to read data from a text file.
3
SQL and Data Handling
State what a foreign key is used for.
4
Trace Tables and Binary/Hex Conversions
Convert the denary number 39 to an 8-bit binary number, showing your working.
5
Systems Architecture
What does the acronym CPU stand for?

You are looking at an earlier sheet. Today's sheet is the one that adds a day.

Your run is kept in this browser only, and there is no account.

Every sheet is deterministic: the same date always regenerates the same five questions. All of February 2023, including the monthly compilation PDF.