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Daily Practice · GCSE Computer Science

September 2022 - GCSE Computer Science 5-a-day

Every GCSE Computer Science sheet published in September 2022, with answers. Systems, data representation, networks, algorithms and programming.

← Today's GCSE Computer Science sheet

September 2022

30 sheets · 150 questions · GCSE

September 2022 compilationAll answers

Every sheet in September 2022

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

  1. 1st September 2022A 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.
  2. 2nd September 2022State the layer that IP operates in, and describe its job.
  3. 3rd September 2022A 'quantity' field on a website must only accept whole numbers from 1 to 10. Which validation check identifies that 15 has been entered?
  4. 4th September 2022A 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.
  5. 5th September 2022A row of 8 pixels is WWWBBBWW. Use run-length encoding to encode this row as pairs of (colour, run length).
  6. 6th September 2022An 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.
  7. 7th September 2022Complete: NOT 0 = ?
  8. 8th September 2022State how many different values can be represented using 5 bits, and explain your reasoning.
  9. 9th September 2022State what LAN stands for.
  10. 10th September 2022Describe what syntax highlighting is and how it helps a programmer.
  11. 11th September 2022An 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.
  12. 12th September 2022Which CPU register holds the address of the next instruction to be fetched?
  13. 13th September 2022Distinguish between the network security threats known as phishing and pharming.
  14. 14th September 2022Trace 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).
  15. 15th September 2022A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
  16. 16th September 2022A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
  17. 17th September 2022A 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.
  18. 18th September 2022State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.
  19. 19th September 2022State the key difference between a procedure and a function.
  20. 20th September 2022Give one example of an optical secondary storage device.
  21. 21st September 2022Explain the role of TCP when a large file is downloaded.
  22. 22nd September 2022State the term used for realistic data that a program would be expected to handle during normal use.
  23. 23rd September 2022Give one advantage of a relational database over a flat-file database.
  24. 24th September 2022State the difference between lossy and lossless compression.
  25. 25th September 2022State the condition that must be met before a binary search can be used on an array.
  26. 26th September 2022A 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.
  27. 27th September 2022Convert the hexadecimal number 3F to denary.
  28. 28th September 2022Which piece of network hardware connects a LAN to another network such as the internet, directing data packets based on IP address?
  29. 29th September 2022Give one advantage and one disadvantage of using a compiler.
  30. 30th September 2022Convert the denary number 45 to hexadecimal.