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Daily Practice · GCSE Computer Science

February 1992 5-a-day

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February 1992

29 sheets · 145 questions · GCSE

February 1992 compilationAll answers

Every sheet in February 1992

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

  1. 1st February 1992A '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 February 1992A 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 February 1992A row of 8 pixels is WWWBBBWW. Use run-length encoding to encode this row as pairs of (colour, run length).
  4. 4th February 1992An 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 February 1992Complete: NOT 0 = ?
  6. 6th February 1992Convert the denary number 200 to hexadecimal, showing your working.
  7. 7th February 1992State what LAN stands for.
  8. 8th February 1992Describe what syntax highlighting is and how it helps a programmer.
  9. 9th February 1992An 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 February 1992Which CPU register holds the address of the next instruction to be fetched?
  11. 11th February 1992Distinguish between the network security threats known as phishing and pharming.
  12. 12th February 1992Trace 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).
  13. 13th February 1992A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
  14. 14th February 1992A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
  15. 15th February 1992A 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 February 1992State 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 February 1992State the pseudocode operator commonly used to join (concatenate) two strings, then show how it joins 'Rev' and 'ision' to produce 'Revision'.
  18. 18th February 1992Give one example of an optical secondary storage device.
  19. 19th February 1992Explain the role of TCP when a large file is downloaded.
  20. 20th February 1992State the term used for realistic data that a program would be expected to handle during normal use.
  21. 21st February 1992Define the term 'primary key' as used in a database table.
  22. 22nd February 1992State the difference between lossy and lossless compression.
  23. 23rd February 1992State the condition that must be met before a binary search can be used on an array.
  24. 24th February 1992A 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 February 1992Convert the 8-bit binary number 10110100 directly to hexadecimal by splitting it into nibbles.
  26. 26th February 1992Which piece of network hardware connects a LAN to another network such as the internet, directing data packets based on IP address?
  27. 27th February 1992Give one advantage and one disadvantage of using a compiler.
  28. 28th February 1992Convert the denary number 45 to hexadecimal.
  29. 29th February 1992What does the acronym CPU stand for?