Daily Practice · GCSE Computer Science
February 2024 - GCSE Computer Science 5-a-day
Every GCSE Computer Science sheet published in February 2024, with answers. Systems, data representation, networks, algorithms and programming.
Every sheet in February 2024
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st February 2024Calculate the maximum number of comparisons required by a binary search on a sorted list of 512 items.
- 2nd February 2024Given P = 0 and Q = 1, state the value of P OR Q.
- 3rd February 2024Convert the hexadecimal number FF to an 8-bit binary number.
- 4th February 2024A network administrator is connecting 10 computers in a server room. Calculate the number of cables needed for a full mesh topology, and state the number needed for a star topology with one central switch.
- 5th February 2024Explain why an interpreter is often preferred while a program is being written.
- 6th February 2024Convert the 4-bit binary number 1101 to denary.
- 7th February 2024Two CPUs are compared for a task optimised for multiple cores: CPU A has 2 cores at 4.2 GHz; CPU B has 6 cores at 3.0 GHz. Explain which CPU is likely to perform better for this task.
- 8th February 2024State why an organisation might employ penetration testers to test its network.
- 9th February 2024A 2D array grid is declared as grid[4][6]. State how many rows and columns it has and how many elements it holds in total.
- 10th February 2024State one example of a file format that commonly uses lossy compression.
- 11th February 2024State how many bits are in one byte, and how many bytes are in one kibibyte (KiB).
- 12th February 2024State whether the source code of proprietary (closed source) software is normally available for the public to view.
- 13th February 2024Write one line of pseudocode that converts the string stored in heightInput into a real number and stores it in a variable called height.
- 14th February 2024State the correct order of the three operations used to read data from a text file.
- 15th February 2024Order these units of data from smallest to largest: megabyte, byte, gigabyte, kilobyte.
- 16th February 2024State the layer that IP operates in, and describe its job.
- 17th February 2024Give one example of erroneous test data for a field that only accepts whole numbers from 1 to 10.
- 18th February 2024A table called products has fields productId, name, price and stock. Write an SQL statement that changes the price of the product with productId 7 to 15.99.
- 19th February 2024Each pair from the previous question is stored using 2 bytes. Calculate the compression ratio achieved, given the uncompressed row (1 byte per pixel) uses 8 bytes.
- 20th February 2024Which flowchart symbol shape is used to represent a decision point (e.g. a yes/no branch)?
- 21st February 2024State the two values a Boolean data type can hold.
- 22nd February 2024Convert the denary number 200 to hexadecimal, showing your working.
- 23rd February 2024Calculate the number of cables needed to connect 8 computers in a full mesh topology, where every computer connects directly to every other computer.
- 24th February 2024Describe what syntax highlighting is and how it helps a programmer.
- 25th February 2024Convert the hexadecimal number 1A to denary.
- 26th February 2024Convert the denary number 156 to an 8 bit binary number.
- 27th February 2024Which type of malware can replicate itself and spread across a network without attaching to another program or needing a user to run it?
- 28th February 2024Trace this algorithm with data = [4, 9, 2, 9, 7] and state the final output. total = 0; count = 0; for i = 0 to 4: if data[i] > 5 then total = total + data[i] and count = count + 1; next i; print(total, count).
- 29th February 2024An image uses a colour depth of 2 bits per pixel. Calculate the maximum number of different colours it can represent.