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Daily Practice · GCSE Computer Science

December 1963 5-a-day

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December 1963

31 sheets · 155 questions · GCSE

December 1963 compilationAll answers

Every sheet in December 1963

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 1963Convert the denary number 156 to an 8 bit binary number.
  2. 2nd December 1963Which type of malware can replicate itself and spread across a network without attaching to another program or needing a user to run it?
  3. 3rd December 1963An array named temps holds 12 values. State the index of the first item and the index of the last item.
  4. 4th December 1963An image uses a colour depth of 2 bits per pixel. Calculate the maximum number of different colours it can represent.
  5. 5th December 1963A CPU's cache has a hit rate of 80%. During a task the CPU makes 4000 requests for data. Calculate the number of cache hits and cache misses.
  6. 6th December 1963Describe two negative consequences of throwing away old computer hardware instead of recycling it.
  7. 7th December 1963Write a function called isEven that takes one integer parameter, num, and returns True if num is even and False otherwise.
  8. 8th December 1963Write the pseudocode header and body for a function called isAdult that takes one integer parameter called age and returns True if age is 18 or over.
  9. 9th December 1963A company backs up its files onto magnetic tape cartridges, each with a capacity of 3 TB. The company needs to back up 20 TB of data. Calculate the minimum number of cartridges needed.
  10. 10th December 1963State the difference between HTTP and HTTPS, and give one situation where HTTPS is essential.
  11. 11th December 1963Explain why iterative testing, carried out throughout development, tends to make errors cheaper to fix than relying only on final testing.
  12. 12th December 1963State what a foreign key is used for.
  13. 13th December 1963Define the term 'interrupt' as used to describe a signal received by a CPU.
  14. 14th December 1963An array called items contains [12, 45, 7, 30, 19] at indices 0 to 4. Describe how a linear search would locate the value 30, stating the number of comparisons needed.
  15. 15th December 1963Evaluate X = NOT A AND B when A = 0 and B = 1.
  16. 16th December 1963A 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.
  17. 17th December 1963Give one advantage of a star topology compared with a mesh topology.
  18. 18th December 1963State why a program written in a high level language must be translated.
  19. 19th December 1963Add the 8-bit binary numbers 00101101 and 00010011, giving your answer as an 8-bit binary number.
  20. 20th December 1963State the three stages of the fetch-decode-execute cycle in the order they occur.
  21. 21st December 1963State one weakness of a simple shift cipher compared to modern encryption methods used on networks.
  22. 22nd December 1963Describe what a nested loop does when it processes a 2D array.
  23. 23rd December 1963Define the term 'pixel'.
  24. 24th December 1963Order these from fastest access speed to slowest: RAM, cache, registers, secondary storage.
  25. 25th December 1963Which piece of UK legislation makes it a criminal offence to gain unauthorised access to a computer system?
  26. 26th December 1963Evaluate the expression 23 DIV 4.
  27. 27th December 1963State the value returned by LENGTH(word) if word stores the string 'Computer'.
  28. 28th December 1963A 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.
  29. 29th December 1963Give two reasons why network communication is divided into layers.
  30. 30th December 1963A 'quantity' field on a website must only accept whole numbers from 1 to 10. Which validation check identifies that 15 has been entered?
  31. 31st December 1963A 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.