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Daily Practice · GCSE Computer Science

May 1955 5-a-day

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May 1955

31 sheets · 155 questions · GCSE

May 1955 compilationAll answers

Every sheet in May 1955

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

  1. 1st May 1955Convert the denary number 45 to hexadecimal.
  2. 2nd May 1955What does the acronym CPU stand for?
  3. 3rd May 1955State what the term malware means.
  4. 4th May 1955Trace 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).
  5. 5th May 1955An 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 May 1955Which of RAM and ROM is volatile, meaning its contents are lost when the power is removed?
  7. 7th May 1955Which piece of UK legislation controls how organisations must store and use people's personal data?
  8. 8th May 1955Given x = 5 and y = 8, state whether x < y AND x > 0 evaluates to True or False.
  9. 9th May 1955A programmer wants any syntax error in their program to be reported before the program starts running at all. State whether a compiler or an interpreter behaves this way, and explain why.
  10. 10th May 1955Give one reason why RAM on its own is not enough, and a computer also needs secondary storage.
  11. 11th May 1955Explain the role of TCP when a large file is downloaded.
  12. 12th May 1955A password field requires between 6 and 12 characters. State two boundary data values that should be used to test this field.
  13. 13th May 1955A table called bookings has fields bookingId, customerName and eventDate. Write an SQL statement that deletes the booking with bookingId 45.
  14. 14th May 1955State one function carried out by the operating system of a computer.
  15. 15th May 1955In computational thinking, what is meant by the term 'decomposition'?
  16. 16th May 1955Given A = 1 and B = 1, state the value of A AND B.
  17. 17th May 1955Convert the denary number 39 to an 8-bit binary number, showing your working.
  18. 18th May 1955Define a peer-to-peer network.
  19. 19th May 1955Give one advantage and one disadvantage of using a compiler.
  20. 20th May 1955Convert the denary number 5 to a 4-bit binary number.
  21. 21st May 1955A CPU has a clock speed of 4.0 GHz. Calculate how many clock cycles it completes in 2 seconds.
  22. 22nd May 1955A 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 May 1955Write a loop in pseudocode that outputs every element of a 1D array named names of length 6.
  24. 24th May 1955A mono sound clip has a sample rate of 4000 Hz and lasts 2 seconds. Calculate the total number of samples taken.
  25. 25th May 1955State the type of program that is typically stored in ROM.
  26. 26th May 1955State one reason a small business might choose to use open source software instead of proprietary (closed source) software.
  27. 27th May 1955A 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 May 1955Give one specific way this code could be refined without changing what it does: a = 5, b = 3, c = a + b, PRINT c
  29. 29th May 1955State the typical maximum capacity of a single-layer DVD.
  30. 30th May 1955A user reads the same email on a phone and a tablet, and deleting it on one deletes it on the other. Which protocol is in use and why?
  31. 31st May 1955State what is meant by a syntax error.