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Daily Practice · GCSE Computer Science

January 1984 5-a-day

← Today's GCSE Computer Science sheet

January 1984

31 sheets · 155 questions · GCSE

January 1984 compilationAll answers

Every sheet in January 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 January 1984Describe what a nested loop does when it processes a 2D array.
  2. 2nd January 1984A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
  3. 3rd January 1984A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
  4. 4th January 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.
  5. 5th January 1984State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.
  6. 6th January 1984State the key difference between a procedure and a function.
  7. 7th January 1984Give one example of an optical secondary storage device.
  8. 8th January 1984Give two reasons why network communication is divided into layers.
  9. 9th January 1984State the term used for realistic data that a program would be expected to handle during normal use.
  10. 10th January 1984Give one advantage of a relational database over a flat-file database.
  11. 11th January 1984State the difference between lossy and lossless compression.
  12. 12th January 1984State the condition that must be met before a binary search can be used on an array.
  13. 13th January 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.
  14. 14th January 1984Convert the hexadecimal number 3F to denary.
  15. 15th January 1984Which piece of network hardware connects a LAN to another network such as the internet, directing data packets based on IP address?
  16. 16th January 1984Explain why an interpreter is often preferred while a program is being written.
  17. 17th January 1984Convert the denary number 45 to hexadecimal.
  18. 18th January 1984What does the acronym CPU stand for?
  19. 19th January 1984State what the term malware means.
  20. 20th January 1984A 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.
  21. 21st January 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).
  22. 22nd January 1984Which of RAM and ROM is volatile, meaning its contents are lost when the power is removed?
  23. 23rd January 1984Which piece of UK legislation controls how organisations must store and use people's personal data?
  24. 24th January 1984Given x = 5 and y = 8, state whether x < y AND x > 0 evaluates to True or False.
  25. 25th January 1984A 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.
  26. 26th January 1984Give one reason why RAM on its own is not enough, and a computer also needs secondary storage.
  27. 27th January 1984State the layer that IP operates in, and describe its job.
  28. 28th January 1984A password field requires between 6 and 12 characters. State two boundary data values that should be used to test this field.
  29. 29th January 1984A table called bookings has fields bookingId, customerName and eventDate. Write an SQL statement that deletes the booking with bookingId 45.
  30. 30th January 1984State one function carried out by the operating system of a computer.
  31. 31st January 1984In computational thinking, what is meant by the term 'decomposition'?