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Daily Practice · GCSE Computer Science

December 1984 5-a-day

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December 1984

31 sheets · 155 questions · GCSE

December 1984 compilationAll answers

Every sheet in December 1984

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 1984Complete: NOT 0 = ?
  2. 2nd December 1984Convert the denary number 39 to an 8-bit binary number, showing your working.
  3. 3rd December 1984State what LAN stands for.
  4. 4th December 1984Name the translator used for assembly language and describe how it differs from a compiler.
  5. 5th December 1984An 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.
  6. 6th December 1984Which CPU register holds the address of the next instruction to be fetched?
  7. 7th December 1984Distinguish between the network security threats known as phishing and pharming.
  8. 8th December 1984Explain what happens if a program tries to read index 5 of an array declared with 5 elements.
  9. 9th December 1984A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
  10. 10th December 1984A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
  11. 11th December 1984A 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.
  12. 12th December 1984State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.
  13. 13th December 1984Give one specific way this code could be refined without changing what it does: a = 5, b = 3, c = a + b, PRINT c
  14. 14th December 1984Give one example of an optical secondary storage device.
  15. 15th December 1984Define the term protocol.
  16. 16th December 1984State the term used for realistic data that a program would be expected to handle during normal use.
  17. 17th December 1984A 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.
  18. 18th December 1984State the difference between lossy and lossless compression.
  19. 19th December 1984State the condition that must be met before a binary search can be used on an array.
  20. 20th December 1984A 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.
  21. 21st December 1984Convert the hexadecimal number FF to an 8-bit binary number.
  22. 22nd December 1984Which piece of network hardware connects a LAN to another network such as the internet, directing data packets based on IP address?
  23. 23rd December 1984Explain the purpose of a breakpoint.
  24. 24th December 1984Convert the denary number 45 to hexadecimal.
  25. 25th December 1984What does the acronym CPU stand for?
  26. 26th December 1984State what the term malware means.
  27. 27th December 1984Explain why a running maximum should be initialised to the first element of the array rather than to 0.
  28. 28th December 1984An 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).
  29. 29th December 1984Which of RAM and ROM is volatile, meaning its contents are lost when the power is removed?
  30. 30th December 1984Which piece of UK legislation controls how organisations must store and use people's personal data?
  31. 31st December 1984Given x = 5 and y = 8, state whether x < y AND x > 0 evaluates to True or False.