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Daily Practice · GCSE Computer Science

May 1968 5-a-day

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May 1968

31 sheets · 155 questions · GCSE

May 1968 compilationAll answers

Every sheet in May 1968

The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.

  1. 1st May 1968State why a program written in a high level language must be translated.
  2. 2nd May 1968Add the 8-bit binary numbers 00101101 and 00010011, giving your answer as an 8-bit binary number.
  3. 3rd May 1968State the three stages of the fetch-decode-execute cycle in the order they occur.
  4. 4th May 1968State one weakness of a simple shift cipher compared to modern encryption methods used on networks.
  5. 5th May 1968Describe what a nested loop does when it processes a 2D array.
  6. 6th May 1968Define the term 'pixel'.
  7. 7th May 1968Order these from fastest access speed to slowest: RAM, cache, registers, secondary storage.
  8. 8th May 1968Which piece of UK legislation makes it a criminal offence to gain unauthorised access to a computer system?
  9. 9th May 1968Evaluate the expression 23 DIV 4.
  10. 10th May 1968State the correct order of the three operations used to read data from a text file.
  11. 11th May 1968A 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.
  12. 12th May 1968Give two reasons why network communication is divided into layers.
  13. 13th May 1968A 'quantity' field on a website must only accept whole numbers from 1 to 10. Which validation check identifies that 15 has been entered?
  14. 14th May 1968A table called products has fields productId, name, price and stock. Write an SQL statement that changes the price of the product with productId 7 to 15.99.
  15. 15th May 1968A row of 8 pixels is WWWBBBWW. Use run-length encoding to encode this row as pairs of (colour, run length).
  16. 16th May 1968An 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.
  17. 17th May 1968Complete: NOT 0 = ?
  18. 18th May 1968Convert the denary number 200 to hexadecimal, showing your working.
  19. 19th May 1968State what LAN stands for.
  20. 20th May 1968Explain why an interpreter is often preferred while a program is being written.
  21. 21st May 1968An 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.
  22. 22nd May 1968Which CPU register holds the address of the next instruction to be fetched?
  23. 23rd May 1968Distinguish between the network security threats known as phishing and pharming.
  24. 24th May 1968A 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.
  25. 25th May 1968A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
  26. 26th May 1968A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
  27. 27th May 1968A 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.
  28. 28th May 1968State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.
  29. 29th May 1968State the pseudocode operator commonly used to join (concatenate) two strings, then show how it joins 'Rev' and 'ision' to produce 'Revision'.
  30. 30th May 1968Give one example of an optical secondary storage device.
  31. 31st May 1968State the layer that IP operates in, and describe its job.