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Daily Practice · GCSE Computer Science

May 1993 - GCSE Computer Science 5-a-day

← Today's GCSE Computer Science sheet

May 1993

31 sheets · 155 questions · GCSE

May 1993 compilationAll answers

Every sheet in May 1993

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 1993Define the term protocol.
  2. 2nd May 1993A 'quantity' field on a website must only accept whole numbers from 1 to 10. Which validation check identifies that 15 has been entered?
  3. 3rd May 1993A 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.
  4. 4th May 1993A row of 8 pixels is WWWBBBWW. Use run-length encoding to encode this row as pairs of (colour, run length).
  5. 5th May 1993An 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.
  6. 6th May 1993Complete: NOT 0 = ?
  7. 7th May 1993Convert the denary number 200 to hexadecimal, showing your working.
  8. 8th May 1993State what LAN stands for.
  9. 9th May 1993Explain the purpose of a breakpoint.
  10. 10th May 1993An 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.
  11. 11th May 1993Which CPU register holds the address of the next instruction to be fetched?
  12. 12th May 1993Distinguish between the network security threats known as phishing and pharming.
  13. 13th May 1993Explain why a running maximum should be initialised to the first element of the array rather than to 0.
  14. 14th May 1993A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
  15. 15th May 1993A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
  16. 16th May 1993A 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.
  17. 17th May 1993State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.
  18. 18th May 1993State the pseudocode operator commonly used to join (concatenate) two strings, then show how it joins 'Rev' and 'ision' to produce 'Revision'.
  19. 19th May 1993Give one example of an optical secondary storage device.
  20. 20th May 1993Name the four layers of the TCP/IP model in order from the one closest to the user.
  21. 21st May 1993State the term used for realistic data that a program would be expected to handle during normal use.
  22. 22nd May 1993Define the term 'primary key' as used in a database table.
  23. 23rd May 1993State the difference between lossy and lossless compression.
  24. 24th May 1993State the condition that must be met before a binary search can be used on an array.
  25. 25th May 1993A 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.
  26. 26th May 1993Convert the 8-bit binary number 10110100 directly to hexadecimal by splitting it into nibbles.
  27. 27th May 1993Which piece of network hardware connects a LAN to another network such as the internet, directing data packets based on IP address?
  28. 28th May 1993A 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.
  29. 29th May 1993Convert the denary number 45 to hexadecimal.
  30. 30th May 1993What does the acronym CPU stand for?
  31. 31st May 1993State what the term malware means.