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Daily Practice · GCSE Computer Science

June 1972 5-a-day

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June 1972

30 sheets · 150 questions · GCSE

June 1972 compilationAll answers

Every sheet in June 1972

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 1972A 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.
  2. 2nd June 1972State the layer that IP operates in, and describe its job.
  3. 3rd June 1972A 'quantity' field on a website must only accept whole numbers from 1 to 10. Which validation check identifies that 15 has been entered?
  4. 4th June 1972A table called bookings has fields bookingId, customerName and eventDate. Write an SQL statement that deletes the booking with bookingId 45.
  5. 5th June 1972A row of 8 pixels is WWWBBBWW. Use run-length encoding to encode this row as pairs of (colour, run length).
  6. 6th June 1972An 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.
  7. 7th June 1972Complete: NOT 0 = ?
  8. 8th June 1972Convert the denary number 39 to an 8-bit binary number, showing your working.
  9. 9th June 1972State what LAN stands for.
  10. 10th June 1972Describe what syntax highlighting is and how it helps a programmer.
  11. 11th June 1972An 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.
  12. 12th June 1972Which CPU register holds the address of the next instruction to be fetched?
  13. 13th June 1972Distinguish between the network security threats known as phishing and pharming.
  14. 14th June 1972Trace this algorithm with data = [4, 9, 2, 9, 7] and state the final output. total = 0; count = 0; for i = 0 to 4: if data[i] > 5 then total = total + data[i] and count = count + 1; next i; print(total, count).
  15. 15th June 1972A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
  16. 16th June 1972A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
  17. 17th June 1972A 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.
  18. 18th June 1972State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.
  19. 19th June 1972Give one specific way this code could be refined without changing what it does: a = 5, b = 3, c = a + b, PRINT c
  20. 20th June 1972Give one example of an optical secondary storage device.
  21. 21st June 1972Explain the role of TCP when a large file is downloaded.
  22. 22nd June 1972State the term used for realistic data that a program would be expected to handle during normal use.
  23. 23rd June 1972A 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.
  24. 24th June 1972State the difference between lossy and lossless compression.
  25. 25th June 1972State the condition that must be met before a binary search can be used on an array.
  26. 26th June 1972A 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.
  27. 27th June 1972Convert the hexadecimal number FF to an 8-bit binary number.
  28. 28th June 1972Which piece of network hardware connects a LAN to another network such as the internet, directing data packets based on IP address?
  29. 29th June 1972Give one advantage and one disadvantage of using a compiler.
  30. 30th June 1972Convert the denary number 45 to hexadecimal.