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Daily Practice · GCSE Computer Science

March 2024 - GCSE Computer Science 5-a-day

Every GCSE Computer Science sheet published in March 2024, with answers. Systems, data representation, networks, algorithms and programming.

← Today's GCSE Computer Science sheet

March 2024

31 sheets · 155 questions · GCSE

March 2024 compilationAll answers

Every sheet in March 2024

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

  1. 1st March 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.
  2. 2nd March 2024Describe two negative consequences of throwing away old computer hardware instead of recycling it.
  3. 3rd March 2024Write a function called isEven that takes one integer parameter, num, and returns True if num is even and False otherwise.
  4. 4th March 2024State the pseudocode operator commonly used to join (concatenate) two strings, then show how it joins 'Rev' and 'ision' to produce 'Revision'.
  5. 5th March 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.
  6. 6th March 2024Explain the role of TCP when a large file is downloaded.
  7. 7th March 2024Explain why iterative testing, carried out throughout development, tends to make errors cheaper to fix than relying only on final testing.
  8. 8th March 2024Define the term 'primary key' as used in a database table.
  9. 9th March 2024Define the term 'interrupt' as used to describe a signal received by a CPU.
  10. 10th March 2024An array called items contains [12, 45, 7, 30, 19] at indices 0 to 4. Describe how a linear search would locate the value 30, stating the number of comparisons needed.
  11. 11th March 2024Evaluate X = NOT A AND B when A = 0 and B = 1.
  12. 12th March 2024Convert the 8-bit binary number 10110100 directly to hexadecimal by splitting it into nibbles.
  13. 13th March 2024Give one advantage of a star topology compared with a mesh topology.
  14. 14th March 2024Give one advantage and one disadvantage of using a compiler.
  15. 15th March 2024Add the 8-bit binary numbers 00101101 and 00010011, giving your answer as an 8-bit binary number.
  16. 16th March 2024State the three stages of the fetch-decode-execute cycle in the order they occur.
  17. 17th March 2024State one weakness of a simple shift cipher compared to modern encryption methods used on networks.
  18. 18th March 2024Write a loop in pseudocode that outputs every element of a 1D array named names of length 6.
  19. 19th March 2024Define the term 'pixel'.
  20. 20th March 2024Order these from fastest access speed to slowest: RAM, cache, registers, secondary storage.
  21. 21st March 2024Which piece of UK legislation makes it a criminal offence to gain unauthorised access to a computer system?
  22. 22nd March 2024Evaluate the expression 23 DIV 4.
  23. 23rd March 2024A 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.
  24. 24th March 2024A 1 TB hard disk drive costs 40 pounds. A 500 GB solid-state drive costs 60 pounds. Calculate the cost per gigabyte of each device, and state which is cheaper per GB. Use 1 TB = 1000 GB.
  25. 25th March 2024A 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?
  26. 26th March 2024A 'quantity' field on a website must only accept whole numbers from 1 to 10. Which validation check identifies that 15 has been entered?
  27. 27th March 2024A table called staff has fields staffId, name, department and salary, storing these records: staffId | name | department | salary, 1 | Ben | Sales | 24000, 2 | Chloe | IT | 31000, 3 | Dan | Sales | 27000. State which staffId(s) would be returned by: SELECT staffId FROM staff WHERE department = 'Sales' AND salary > 25000;
  28. 28th March 2024A row of 8 pixels is WWWBBBWW. Use run-length encoding to encode this row as pairs of (colour, run length).
  29. 29th March 2024An 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.
  30. 30th March 2024Complete: NOT 0 = ?
  31. 31st March 2024Convert the 8-bit binary number 01011010 to denary.