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Daily Practice · GCSE Computer Science

October 1968 5-a-day

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October 1968

31 sheets · 155 questions · GCSE

October 1968 compilationAll answers

Every sheet in October 1968

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

  1. 1st October 1968Convert the denary number 45 to hexadecimal.
  2. 2nd October 1968What does the acronym CPU stand for?
  3. 3rd October 1968State what the term malware means.
  4. 4th October 1968A 2D array grid is declared as grid[4][6]. State how many rows and columns it has and how many elements it holds in total.
  5. 5th October 1968An uncompressed file is 6000 KB. After lossless compression it is 1500 KB. Calculate the compression ratio in the form n:1 (original size : compressed size).
  6. 6th October 1968Which of RAM and ROM is volatile, meaning its contents are lost when the power is removed?
  7. 7th October 1968Which piece of UK legislation controls how organisations must store and use people's personal data?
  8. 8th October 1968Given x = 5 and y = 8, state whether x < y AND x > 0 evaluates to True or False.
  9. 9th October 1968State the correct order of the three operations used to read data from a text file.
  10. 10th October 1968Give one reason why RAM on its own is not enough, and a computer also needs secondary storage.
  11. 11th October 1968State the layer that IP operates in, and describe its job.
  12. 12th October 1968A password field requires between 6 and 12 characters. State two boundary data values that should be used to test this field.
  13. 13th October 1968A 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.
  14. 14th October 1968State one function carried out by the operating system of a computer.
  15. 15th October 1968In computational thinking, what is meant by the term 'decomposition'?
  16. 16th October 1968Given A = 1 and B = 1, state the value of A AND B.
  17. 17th October 1968Convert the denary number 200 to hexadecimal, showing your working.
  18. 18th October 1968Define a peer-to-peer network.
  19. 19th October 1968Describe what syntax highlighting is and how it helps a programmer.
  20. 20th October 1968Convert the denary number 5 to a 4-bit binary number.
  21. 21st October 1968A CPU has a clock speed of 4.0 GHz. Calculate how many clock cycles it completes in 2 seconds.
  22. 22nd October 1968A simple cipher shifts every letter 2 places forward in the alphabet, wrapping around so Y becomes A and Z becomes B. Encrypt the plaintext CAT using this cipher.
  23. 23rd October 1968Trace 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).
  24. 24th October 1968A mono sound clip has a sample rate of 4000 Hz and lasts 2 seconds. Calculate the total number of samples taken.
  25. 25th October 1968State the type of program that is typically stored in ROM.
  26. 26th October 1968State one reason a small business might choose to use open source software instead of proprietary (closed source) software.
  27. 27th October 1968A FOR loop runs: total = 0, FOR i = 1 TO 4, total = total + i, NEXT i. State the value of total after the loop finishes.
  28. 28th October 1968State the pseudocode operator commonly used to join (concatenate) two strings, then show how it joins 'Rev' and 'ision' to produce 'Revision'.
  29. 29th October 1968State the typical maximum capacity of a single-layer DVD.
  30. 30th October 1968Explain the role of TCP when a large file is downloaded.
  31. 31st October 1968State what is meant by a syntax error.