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Daily Practice · GCSE Computer Science

June 1982 5-a-day

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June 1982

30 sheets · 150 questions · GCSE

June 1982 compilationAll answers

Every sheet in June 1982

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 1982A row of 8 pixels is WWWBBBWW. Use run-length encoding to encode this row as pairs of (colour, run length).
  2. 2nd June 1982An 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.
  3. 3rd June 1982Complete: NOT 0 = ?
  4. 4th June 1982Convert the denary number 39 to an 8-bit binary number, showing your working.
  5. 5th June 1982State what LAN stands for.
  6. 6th June 1982Explain the purpose of a breakpoint.
  7. 7th June 1982An 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.
  8. 8th June 1982Which CPU register holds the address of the next instruction to be fetched?
  9. 9th June 1982Distinguish between the network security threats known as phishing and pharming.
  10. 10th June 1982Explain why a running maximum should be initialised to the first element of the array rather than to 0.
  11. 11th June 1982A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
  12. 12th June 1982A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
  13. 13th June 1982A 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.
  14. 14th June 1982State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.
  15. 15th June 1982Give one specific way this code could be refined without changing what it does: a = 5, b = 3, c = a + b, PRINT c
  16. 16th June 1982Give one example of an optical secondary storage device.
  17. 17th June 1982Name the four layers of the TCP/IP model in order from the one closest to the user.
  18. 18th June 1982State the term used for realistic data that a program would be expected to handle during normal use.
  19. 19th June 1982A 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.
  20. 20th June 1982State the difference between lossy and lossless compression.
  21. 21st June 1982State the condition that must be met before a binary search can be used on an array.
  22. 22nd June 1982A 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.
  23. 23rd June 1982Convert the hexadecimal number FF to an 8-bit binary number.
  24. 24th June 1982Which piece of network hardware connects a LAN to another network such as the internet, directing data packets based on IP address?
  25. 25th June 1982A program compiles and runs but always outputs an average that is too small. State the type of error and explain why the translator did not report it.
  26. 26th June 1982Convert the denary number 45 to hexadecimal.
  27. 27th June 1982What does the acronym CPU stand for?
  28. 28th June 1982State what the term malware means.
  29. 29th June 1982An array named temps holds 12 values. State the index of the first item and the index of the last item.
  30. 30th June 1982An 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).