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Daily Practice · GCSE Computer Science

August 1984 5-a-day

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August 1984

31 sheets · 155 questions · GCSE

August 1984 compilationAll answers

Every sheet in August 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 August 1984Evaluate the expression 23 DIV 4.
  2. 2nd August 1984State the correct order of the three operations used to read data from a text file.
  3. 3rd August 1984A 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.
  4. 4th August 1984Define the term protocol.
  5. 5th August 1984A 'quantity' field on a website must only accept whole numbers from 1 to 10. Which validation check identifies that 15 has been entered?
  6. 6th August 1984A 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.
  7. 7th August 1984A row of 8 pixels is WWWBBBWW. Use run-length encoding to encode this row as pairs of (colour, run length).
  8. 8th August 1984An 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.
  9. 9th August 1984Complete: NOT 0 = ?
  10. 10th August 1984Convert the denary number 200 to hexadecimal, showing your working.
  11. 11th August 1984State what LAN stands for.
  12. 12th August 1984Explain the purpose of a breakpoint.
  13. 13th August 1984An 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.
  14. 14th August 1984Which CPU register holds the address of the next instruction to be fetched?
  15. 15th August 1984Distinguish between the network security threats known as phishing and pharming.
  16. 16th August 1984Explain why a running maximum should be initialised to the first element of the array rather than to 0.
  17. 17th August 1984A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
  18. 18th August 1984A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
  19. 19th August 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.
  20. 20th August 1984State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.
  21. 21st August 1984State the pseudocode operator commonly used to join (concatenate) two strings, then show how it joins 'Rev' and 'ision' to produce 'Revision'.
  22. 22nd August 1984Give one example of an optical secondary storage device.
  23. 23rd August 1984Name the four layers of the TCP/IP model in order from the one closest to the user.
  24. 24th August 1984State the term used for realistic data that a program would be expected to handle during normal use.
  25. 25th August 1984Define the term 'primary key' as used in a database table.
  26. 26th August 1984State the difference between lossy and lossless compression.
  27. 27th August 1984State the condition that must be met before a binary search can be used on an array.
  28. 28th August 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.
  29. 29th August 1984Convert the 8-bit binary number 10110100 directly to hexadecimal by splitting it into nibbles.
  30. 30th August 1984Which piece of network hardware connects a LAN to another network such as the internet, directing data packets based on IP address?
  31. 31st August 1984A program compiles and runs but always outputs an average that is too small. State the type of error and explain why the translator did not report it.