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Daily Practice · GCSE Computer Science

March 1986 5-a-day

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March 1986

31 sheets · 155 questions · GCSE

March 1986 compilationAll answers

Every sheet in March 1986

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 1986An 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.
  2. 2nd March 1986Complete: NOT 0 = ?
  3. 3rd March 1986Convert the denary number 39 to an 8-bit binary number, showing your working.
  4. 4th March 1986State what LAN stands for.
  5. 5th March 1986State why a program written in a high level language must be translated.
  6. 6th March 1986An 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.
  7. 7th March 1986Which CPU register holds the address of the next instruction to be fetched?
  8. 8th March 1986Distinguish between the network security threats known as phishing and pharming.
  9. 9th March 1986Describe what a nested loop does when it processes a 2D array.
  10. 10th March 1986A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
  11. 11th March 1986A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
  12. 12th March 1986A 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.
  13. 13th March 1986State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.
  14. 14th March 1986Give one specific way this code could be refined without changing what it does: a = 5, b = 3, c = a + b, PRINT c
  15. 15th March 1986Give one example of an optical secondary storage device.
  16. 16th March 1986Give two reasons why network communication is divided into layers.
  17. 17th March 1986State the term used for realistic data that a program would be expected to handle during normal use.
  18. 18th March 1986A 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.
  19. 19th March 1986State the difference between lossy and lossless compression.
  20. 20th March 1986State the condition that must be met before a binary search can be used on an array.
  21. 21st March 1986A 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.
  22. 22nd March 1986Convert the hexadecimal number FF to an 8-bit binary number.
  23. 23rd March 1986Which piece of network hardware connects a LAN to another network such as the internet, directing data packets based on IP address?
  24. 24th March 1986Explain why an interpreter is often preferred while a program is being written.
  25. 25th March 1986Convert the denary number 45 to hexadecimal.
  26. 26th March 1986What does the acronym CPU stand for?
  27. 27th March 1986State what the term malware means.
  28. 28th March 1986A 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.
  29. 29th March 1986An uncompressed file is 6000 KB. After lossless compression it is 1500 KB. Calculate the compression ratio in the form n:1 (original size : compressed size).
  30. 30th March 1986Which of RAM and ROM is volatile, meaning its contents are lost when the power is removed?
  31. 31st March 1986Which piece of UK legislation controls how organisations must store and use people's personal data?