Daily Practice · GCSE Computer Science

Daily Practice - GCSE Computer Science

Systems, data representation, networks, algorithms and programming.

22nd September 2023

5 questions · GCSE · 123 questions in this band

1
Boolean Logic
Given A = 1 and B = 1, state the value of A AND B.
2
Data Representation: Number Systems
Convert the 4-bit binary number 1101 to denary.
3
Data Representation: Images, Sound and Compression
An image uses a colour depth of 2 bits per pixel. Calculate the maximum number of different colours it can represent.
4
Programming Practice: Writing and Refining Programs
A function is defined as: FUNCTION addTax(price) RETURN price x 1.2 ENDFUNCTION. Another line of code runs: total <- addTax(20) + addTax(30). Trace both function calls and state the final value of total.
5
SQL and Data Handling
Give one advantage of a relational database over a flat-file database.

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