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Daily Practice · GCSE Computer Science

December 1969 5-a-day

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December 1969

31 sheets · 155 questions · GCSE

December 1969 compilationAll answers

Every sheet in December 1969

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 1969A 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.
  2. 2nd December 1969A 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.
  3. 3rd December 1969Explain the role of TCP when a large file is downloaded.
  4. 4th December 1969A 'quantity' field on a website must only accept whole numbers from 1 to 10. Which validation check identifies that 15 has been entered?
  5. 5th December 1969A table called bookings has fields bookingId, customerName and eventDate. Write an SQL statement that deletes the booking with bookingId 45.
  6. 6th December 1969A row of 8 pixels is WWWBBBWW. Use run-length encoding to encode this row as pairs of (colour, run length).
  7. 7th December 1969An 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.
  8. 8th December 1969Complete: NOT 0 = ?
  9. 9th December 1969Convert the denary number 39 to an 8-bit binary number, showing your working.
  10. 10th December 1969State what LAN stands for.
  11. 11th December 1969Give one advantage and one disadvantage of using a compiler.
  12. 12th December 1969An 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.
  13. 13th December 1969Which CPU register holds the address of the next instruction to be fetched?
  14. 14th December 1969Distinguish between the network security threats known as phishing and pharming.
  15. 15th December 1969Write a loop in pseudocode that outputs every element of a 1D array named names of length 6.
  16. 16th December 1969A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
  17. 17th December 1969A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
  18. 18th December 1969A 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.
  19. 19th December 1969State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.
  20. 20th December 1969Give one specific way this code could be refined without changing what it does: a = 5, b = 3, c = a + b, PRINT c
  21. 21st December 1969Give one example of an optical secondary storage device.
  22. 22nd December 1969A user reads the same email on a phone and a tablet, and deleting it on one deletes it on the other. Which protocol is in use and why?
  23. 23rd December 1969State the term used for realistic data that a program would be expected to handle during normal use.
  24. 24th December 1969A 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.
  25. 25th December 1969State the difference between lossy and lossless compression.
  26. 26th December 1969State the condition that must be met before a binary search can be used on an array.
  27. 27th December 1969A 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.
  28. 28th December 1969Convert the hexadecimal number FF to an 8-bit binary number.
  29. 29th December 1969Which piece of network hardware connects a LAN to another network such as the internet, directing data packets based on IP address?
  30. 30th December 1969Name the translator used for assembly language and describe how it differs from a compiler.
  31. 31st December 1969Convert the denary number 45 to hexadecimal.