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Daily Practice · GCSE Computer Science

December 1954 5-a-day

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December 1954

31 sheets · 155 questions · GCSE

December 1954 compilationAll answers

Every sheet in December 1954

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

  1. 1st December 1954State the three stages of the fetch-decode-execute cycle in the order they occur.
  2. 2nd December 1954State one weakness of a simple shift cipher compared to modern encryption methods used on networks.
  3. 3rd December 1954A 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.
  4. 4th December 1954Define the term 'pixel'.
  5. 5th December 1954Order these from fastest access speed to slowest: RAM, cache, registers, secondary storage.
  6. 6th December 1954Which piece of UK legislation makes it a criminal offence to gain unauthorised access to a computer system?
  7. 7th December 1954Evaluate the expression 23 DIV 4.
  8. 8th December 1954A 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.
  9. 9th December 1954A 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.
  10. 10th December 1954State the layer that IP operates in, and describe its job.
  11. 11th December 1954A 'quantity' field on a website must only accept whole numbers from 1 to 10. Which validation check identifies that 15 has been entered?
  12. 12th December 1954A table called bookings has fields bookingId, customerName and eventDate. Write an SQL statement that deletes the booking with bookingId 45.
  13. 13th December 1954A row of 8 pixels is WWWBBBWW. Use run-length encoding to encode this row as pairs of (colour, run length).
  14. 14th December 1954An 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.
  15. 15th December 1954Complete: NOT 0 = ?
  16. 16th December 1954Convert the denary number 39 to an 8-bit binary number, showing your working.
  17. 17th December 1954State what LAN stands for.
  18. 18th December 1954Describe what syntax highlighting is and how it helps a programmer.
  19. 19th December 1954An 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.
  20. 20th December 1954Which CPU register holds the address of the next instruction to be fetched?
  21. 21st December 1954Distinguish between the network security threats known as phishing and pharming.
  22. 22nd December 1954Trace 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).
  23. 23rd December 1954A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
  24. 24th December 1954A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
  25. 25th December 1954A 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.
  26. 26th December 1954State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.
  27. 27th December 1954Give one specific way this code could be refined without changing what it does: a = 5, b = 3, c = a + b, PRINT c
  28. 28th December 1954Give one example of an optical secondary storage device.
  29. 29th December 1954Explain the role of TCP when a large file is downloaded.
  30. 30th December 1954State the term used for realistic data that a program would be expected to handle during normal use.
  31. 31st December 1954A 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.