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Daily Practice · GCSE Computer Science

August 1994 - GCSE Computer Science 5-a-day

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August 1994

31 sheets · 155 questions · GCSE

August 1994 compilationAll answers

Every sheet in August 1994

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 1994A 'quantity' field on a website must only accept whole numbers from 1 to 10. Which validation check identifies that 15 has been entered?
  2. 2nd August 1994A 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.
  3. 3rd August 1994A row of 8 pixels is WWWBBBWW. Use run-length encoding to encode this row as pairs of (colour, run length).
  4. 4th August 1994An 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.
  5. 5th August 1994Complete: NOT 0 = ?
  6. 6th August 1994Convert the denary number 200 to hexadecimal, showing your working.
  7. 7th August 1994State what LAN stands for.
  8. 8th August 1994Explain why an interpreter is often preferred while a program is being written.
  9. 9th August 1994An 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.
  10. 10th August 1994Which CPU register holds the address of the next instruction to be fetched?
  11. 11th August 1994Distinguish between the network security threats known as phishing and pharming.
  12. 12th August 1994A 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.
  13. 13th August 1994A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
  14. 14th August 1994A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
  15. 15th August 1994A 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.
  16. 16th August 1994State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.
  17. 17th August 1994State the pseudocode operator commonly used to join (concatenate) two strings, then show how it joins 'Rev' and 'ision' to produce 'Revision'.
  18. 18th August 1994Give one example of an optical secondary storage device.
  19. 19th August 1994State the layer that IP operates in, and describe its job.
  20. 20th August 1994State the term used for realistic data that a program would be expected to handle during normal use.
  21. 21st August 1994Define the term 'primary key' as used in a database table.
  22. 22nd August 1994State the difference between lossy and lossless compression.
  23. 23rd August 1994State the condition that must be met before a binary search can be used on an array.
  24. 24th August 1994A 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.
  25. 25th August 1994Convert the 8-bit binary number 10110100 directly to hexadecimal by splitting it into nibbles.
  26. 26th August 1994Which piece of network hardware connects a LAN to another network such as the internet, directing data packets based on IP address?
  27. 27th August 1994Describe what syntax highlighting is and how it helps a programmer.
  28. 28th August 1994Convert the denary number 45 to hexadecimal.
  29. 29th August 1994What does the acronym CPU stand for?
  30. 30th August 1994State what the term malware means.
  31. 31st August 1994Trace 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).