Daily Practice · GCSE Computer Science
June 2024 - GCSE Computer Science 5-a-day
Every GCSE Computer Science sheet published in June 2024, with answers. Systems, data representation, networks, algorithms and programming.
Every sheet in June 2024
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st June 2024State why an organisation might employ penetration testers to test its network.
- 2nd June 2024Describe what a nested loop does when it processes a 2D array.
- 3rd June 2024State one example of a file format that commonly uses lossy compression.
- 4th June 2024State how many bits are in one byte, and how many bytes are in one kibibyte (KiB).
- 5th June 2024State whether the source code of proprietary (closed source) software is normally available for the public to view.
- 6th June 2024Write one line of pseudocode that converts the string stored in heightInput into a real number and stores it in a variable called height.
- 7th June 2024A 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.
- 8th June 2024Order these units of data from smallest to largest: megabyte, byte, gigabyte, kilobyte.
- 9th June 2024Give two reasons why network communication is divided into layers.
- 10th June 2024Give one example of erroneous test data for a field that only accepts whole numbers from 1 to 10.
- 11th June 2024A table called bookings has fields bookingId, customerName and eventDate. Write an SQL statement that deletes the booking with bookingId 45.
- 12th June 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.
- 13th June 2024Which flowchart symbol shape is used to represent a decision point (e.g. a yes/no branch)?
- 14th June 2024State the two values a Boolean data type can hold.
- 15th June 2024Convert the denary number 39 to an 8-bit binary number, showing your working.
- 16th June 2024Calculate the number of cables needed to connect 8 computers in a full mesh topology, where every computer connects directly to every other computer.
- 17th June 2024Explain why an interpreter is often preferred while a program is being written.
- 18th June 2024Convert the hexadecimal number 1A to denary.
- 19th June 2024Convert the denary number 156 to an 8 bit binary number.
- 20th June 2024Which type of malware can replicate itself and spread across a network without attaching to another program or needing a user to run it?
- 21st June 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.
- 22nd June 2024An image uses a colour depth of 2 bits per pixel. Calculate the maximum number of different colours it can represent.
- 23rd June 2024A CPU's cache has a hit rate of 80%. During a task the CPU makes 4000 requests for data. Calculate the number of cache hits and cache misses.
- 24th June 2024Describe two negative consequences of throwing away old computer hardware instead of recycling it.
- 25th June 2024Write a function called isEven that takes one integer parameter, num, and returns True if num is even and False otherwise.
- 26th June 2024Give one specific way this code could be refined without changing what it does: a = 5, b = 3, c = a + b, PRINT c
- 27th June 2024A company backs up its files onto magnetic tape cartridges, each with a capacity of 3 TB. The company needs to back up 20 TB of data. Calculate the minimum number of cartridges needed.
- 28th June 2024State the layer that IP operates in, and describe its job.
- 29th June 2024Explain why iterative testing, carried out throughout development, tends to make errors cheaper to fix than relying only on final testing.
- 30th June 2024A table called members has fields memberId, firstName, lastName and joinYear. Write an SQL statement that adds a new record with memberId 12, firstName 'Priya', lastName 'Shah' and joinYear 2026.