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Daily Practice · GCSE Computer Science

August 1959 5-a-day

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August 1959

31 sheets · 155 questions · GCSE

August 1959 compilationAll answers

Every sheet in August 1959

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

  1. 1st August 1959An array called items contains [12, 45, 7, 30, 19] at indices 0 to 4. Describe how a linear search would locate the value 30, stating the number of comparisons needed.
  2. 2nd August 1959Evaluate X = NOT A AND B when A = 0 and B = 1.
  3. 3rd August 1959Convert the hexadecimal number FF to an 8-bit binary number.
  4. 4th August 1959Give one advantage of a star topology compared with a mesh topology.
  5. 5th August 1959State why a program written in a high level language must be translated.
  6. 6th August 1959Add the 8-bit binary numbers 00101101 and 00010011, giving your answer as an 8-bit binary number.
  7. 7th August 1959State the three stages of the fetch-decode-execute cycle in the order they occur.
  8. 8th August 1959State one weakness of a simple shift cipher compared to modern encryption methods used on networks.
  9. 9th August 1959Describe what a nested loop does when it processes a 2D array.
  10. 10th August 1959Define the term 'pixel'.
  11. 11th August 1959Order these from fastest access speed to slowest: RAM, cache, registers, secondary storage.
  12. 12th August 1959Which piece of UK legislation makes it a criminal offence to gain unauthorised access to a computer system?
  13. 13th August 1959Evaluate the expression 23 DIV 4.
  14. 14th August 1959State the correct order of the three operations used to read data from a text file.
  15. 15th August 1959A 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.
  16. 16th August 1959Give two reasons why network communication is divided into layers.
  17. 17th August 1959A 'quantity' field on a website must only accept whole numbers from 1 to 10. Which validation check identifies that 15 has been entered?
  18. 18th August 1959A 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.
  19. 19th August 1959A row of 8 pixels is WWWBBBWW. Use run-length encoding to encode this row as pairs of (colour, run length).
  20. 20th August 1959An 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.
  21. 21st August 1959Complete: NOT 0 = ?
  22. 22nd August 1959Convert the denary number 200 to hexadecimal, showing your working.
  23. 23rd August 1959State what LAN stands for.
  24. 24th August 1959Explain why an interpreter is often preferred while a program is being written.
  25. 25th August 1959An 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.
  26. 26th August 1959Which CPU register holds the address of the next instruction to be fetched?
  27. 27th August 1959Distinguish between the network security threats known as phishing and pharming.
  28. 28th August 1959A 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.
  29. 29th August 1959A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
  30. 30th August 1959A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
  31. 31st August 1959A 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.