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Daily Practice · GCSE Computer Science

December 1993 - GCSE Computer Science 5-a-day

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December 1993

31 sheets · 155 questions · GCSE

December 1993 compilationAll answers

Every sheet in December 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 December 1993Evaluate X = NOT A AND B when A = 0 and B = 1.
  2. 2nd December 1993A pseudocode algorithm is: count <- 0, x <- 10, WHILE x > 0, count <- count + 1, x <- x - 3, ENDWHILE, OUTPUT count. Complete a trace table for x and count, laid out as x | count, then state the value output.
  3. 3rd December 1993Give one advantage of a star topology compared with a mesh topology.
  4. 4th December 1993Describe what syntax highlighting is and how it helps a programmer.
  5. 5th December 1993Add the 8-bit binary numbers 00101101 and 00010011, giving your answer as an 8-bit binary number.
  6. 6th December 1993State the three stages of the fetch-decode-execute cycle in the order they occur.
  7. 7th December 1993State one weakness of a simple shift cipher compared to modern encryption methods used on networks.
  8. 8th December 1993Trace 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).
  9. 9th December 1993Define the term 'pixel'.
  10. 10th December 1993Order these from fastest access speed to slowest: RAM, cache, registers, secondary storage.
  11. 11th December 1993Which piece of UK legislation makes it a criminal offence to gain unauthorised access to a computer system?
  12. 12th December 1993Evaluate the expression 23 DIV 4.
  13. 13th December 1993State the value returned by LENGTH(word) if word stores the string 'Computer'.
  14. 14th December 1993A 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.
  15. 15th December 1993Explain the role of TCP when a large file is downloaded.
  16. 16th December 1993A 'quantity' field on a website must only accept whole numbers from 1 to 10. Which validation check identifies that 15 has been entered?
  17. 17th December 1993A table called books has fields bookId, title, authorId and copiesAvailable. Write an SQL statement that selects the title of every book with more than 2 copies available.
  18. 18th December 1993A row of 8 pixels is WWWBBBWW. Use run-length encoding to encode this row as pairs of (colour, run length).
  19. 19th December 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.
  20. 20th December 1993Complete: NOT 0 = ?
  21. 21st December 1993State how many different values can be represented using 5 bits, and explain your reasoning.
  22. 22nd December 1993State what LAN stands for.
  23. 23rd December 1993Give one advantage and one disadvantage of using a compiler.
  24. 24th December 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.
  25. 25th December 1993Which CPU register holds the address of the next instruction to be fetched?
  26. 26th December 1993Distinguish between the network security threats known as phishing and pharming.
  27. 27th December 1993Write a loop in pseudocode that outputs every element of a 1D array named names of length 6.
  28. 28th December 1993A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
  29. 29th December 1993A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
  30. 30th December 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.
  31. 31st December 1993State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.