Revision Library
/Subjects/Computer Science/Daily Practice
Daily Practice · GCSE Computer Science

June 2026 - GCSE Computer Science 5-a-day

Every GCSE Computer Science sheet published in June 2026, with answers. Systems, data representation, networks, algorithms and programming.

← Today's GCSE Computer Science sheet

June 2026

30 sheets · 150 questions · GCSE

June 2026 compilationAll answers

Every sheet in June 2026

The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.

  1. 1st June 2026A user reads the same email on a phone and a tablet, and deleting it on one deletes it on the other. Which protocol is in use and why?
  2. 2nd June 2026A 'quantity' field on a website must only accept whole numbers from 1 to 10. Which validation check identifies that 15 has been entered?
  3. 3rd June 2026A table called books has fields bookId, title, authorId and copiesAvailable. Write an SQL statement that selects the title of every book with more than 2 copies available.
  4. 4th June 2026A row of 8 pixels is WWWBBBWW. Use run-length encoding to encode this row as pairs of (colour, run length).
  5. 5th June 2026An array contains [9, 2, 6], to be sorted using insertion sort. Show the state of the array after each new element has been inserted into its correct position.
  6. 6th June 2026Complete: NOT 0 = ?
  7. 7th June 2026State how many different values can be represented using 5 bits, and explain your reasoning.
  8. 8th June 2026State what LAN stands for.
  9. 9th June 2026Name the translator used for assembly language and describe how it differs from a compiler.
  10. 10th June 2026An 8-bit register stores the value 01100000 (denary 96). State the resulting 8-bit binary value after a left shift by 1 place, and state whether an overflow occurs.
  11. 11th June 2026Which CPU register holds the address of the next instruction to be fetched?
  12. 12th June 2026Distinguish between the network security threats known as phishing and pharming.
  13. 13th June 2026Explain what happens if a program tries to read index 5 of an array declared with 5 elements.
  14. 14th June 2026A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
  15. 15th June 2026A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
  16. 16th June 2026A streaming company records which shows each user watches and uses this to recommend similar shows. Explain one ethical concern this could raise, even if the company only uses the data to improve recommendations.
  17. 17th June 2026State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.
  18. 18th June 2026State the key difference between a procedure and a function.
  19. 19th June 2026Give one example of an optical secondary storage device.
  20. 20th June 2026Define the term protocol.
  21. 21st June 2026State the term used for realistic data that a program would be expected to handle during normal use.
  22. 22nd June 2026Give one advantage of a relational database over a flat-file database.
  23. 23rd June 2026State the difference between lossy and lossless compression.
  24. 24th June 2026State the condition that must be met before a binary search can be used on an array.
  25. 25th June 2026A logic circuit has inputs C and D. C feeds into a NOT gate; the output of the NOT gate and D feed into an OR gate, giving output Y. Write the Boolean expression for Y and state its value when C = 1 and D = 0.
  26. 26th June 2026Convert the hexadecimal number 3F to denary.
  27. 27th June 2026Which piece of network hardware connects a LAN to another network such as the internet, directing data packets based on IP address?
  28. 28th June 2026Explain the purpose of a breakpoint.
  29. 29th June 2026Convert the denary number 45 to hexadecimal.
  30. 30th June 2026What does the acronym CPU stand for?