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Daily Practice · GCSE Computer Science

April 1971 5-a-day

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April 1971

30 sheets · 150 questions · GCSE

April 1971 compilationAll answers

Every sheet in April 1971

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

  1. 1st April 1971Convert the denary number 45 to hexadecimal.
  2. 2nd April 1971What does the acronym CPU stand for?
  3. 3rd April 1971State what the term malware means.
  4. 4th April 1971Describe what a nested loop does when it processes a 2D array.
  5. 5th April 1971An 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 April 1971Which of RAM and ROM is volatile, meaning its contents are lost when the power is removed?
  7. 7th April 1971Which piece of UK legislation controls how organisations must store and use people's personal data?
  8. 8th April 1971Given x = 5 and y = 8, state whether x < y AND x > 0 evaluates to True or False.
  9. 9th April 1971State the correct order of the three operations used to read data from a text file.
  10. 10th April 1971Give one reason why RAM on its own is not enough, and a computer also needs secondary storage.
  11. 11th April 1971Give two reasons why network communication is divided into layers.
  12. 12th April 1971A password field requires between 6 and 12 characters. State two boundary data values that should be used to test this field.
  13. 13th April 1971A 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 April 1971State one function carried out by the operating system of a computer.
  15. 15th April 1971In computational thinking, what is meant by the term 'decomposition'?
  16. 16th April 1971Given A = 1 and B = 1, state the value of A AND B.
  17. 17th April 1971Convert the denary number 200 to hexadecimal, showing your working.
  18. 18th April 1971Define a peer-to-peer network.
  19. 19th April 1971Explain why an interpreter is often preferred while a program is being written.
  20. 20th April 1971Convert the denary number 5 to a 4-bit binary number.
  21. 21st April 1971A CPU has a clock speed of 4.0 GHz. Calculate how many clock cycles it completes in 2 seconds.
  22. 22nd April 1971A 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 April 1971A 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.
  24. 24th April 1971A mono sound clip has a sample rate of 4000 Hz and lasts 2 seconds. Calculate the total number of samples taken.
  25. 25th April 1971State the type of program that is typically stored in ROM.
  26. 26th April 1971State one reason a small business might choose to use open source software instead of proprietary (closed source) software.
  27. 27th April 1971A 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 April 1971State the pseudocode operator commonly used to join (concatenate) two strings, then show how it joins 'Rev' and 'ision' to produce 'Revision'.
  29. 29th April 1971State the typical maximum capacity of a single-layer DVD.
  30. 30th April 1971State the layer that IP operates in, and describe its job.