Revision Library
/Subjects/Computer Science/Daily Practice
Daily Practice · GCSE Computer Science

September 1984 5-a-day

← Today's GCSE Computer Science sheet

September 1984

30 sheets · 150 questions · GCSE

September 1984 compilationAll answers

Every sheet in September 1984

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 1984Convert the denary number 45 to hexadecimal.
  2. 2nd September 1984What does the acronym CPU stand for?
  3. 3rd September 1984State what the term malware means.
  4. 4th September 1984An array named temps holds 12 values. State the index of the first item and the index of the last item.
  5. 5th September 1984An 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 September 1984Which of RAM and ROM is volatile, meaning its contents are lost when the power is removed?
  7. 7th September 1984Which piece of UK legislation controls how organisations must store and use people's personal data?
  8. 8th September 1984Given x = 5 and y = 8, state whether x < y AND x > 0 evaluates to True or False.
  9. 9th September 1984A function is defined as: FUNCTION addTax(price) RETURN price x 1.2 ENDFUNCTION. Another line of code runs: total <- addTax(20) + addTax(30). Trace both function calls and state the final value of total.
  10. 10th September 1984Give one reason why RAM on its own is not enough, and a computer also needs secondary storage.
  11. 11th September 1984State the difference between HTTP and HTTPS, and give one situation where HTTPS is essential.
  12. 12th September 1984A password field requires between 6 and 12 characters. State two boundary data values that should be used to test this field.
  13. 13th September 1984A table called staff has fields staffId, name, department and salary, storing these records: staffId | name | department | salary, 1 | Ben | Sales | 24000, 2 | Chloe | IT | 31000, 3 | Dan | Sales | 27000. State which staffId(s) would be returned by: SELECT staffId FROM staff WHERE department = 'Sales' AND salary > 25000;
  14. 14th September 1984State one function carried out by the operating system of a computer.
  15. 15th September 1984In computational thinking, what is meant by the term 'decomposition'?
  16. 16th September 1984Given A = 1 and B = 1, state the value of A AND B.
  17. 17th September 1984Convert the 8-bit binary number 01011010 to denary.
  18. 18th September 1984Define a peer-to-peer network.
  19. 19th September 1984State why a program written in a high level language must be translated.
  20. 20th September 1984Convert the denary number 5 to a 4-bit binary number.
  21. 21st September 1984A CPU has a clock speed of 4.0 GHz. Calculate how many clock cycles it completes in 2 seconds.
  22. 22nd September 1984A 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 September 1984Describe what a nested loop does when it processes a 2D array.
  24. 24th September 1984A mono sound clip has a sample rate of 4000 Hz and lasts 2 seconds. Calculate the total number of samples taken.
  25. 25th September 1984State the type of program that is typically stored in ROM.
  26. 26th September 1984State one reason a small business might choose to use open source software instead of proprietary (closed source) software.
  27. 27th September 1984A 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 September 1984Write 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.
  29. 29th September 1984State the typical maximum capacity of a single-layer DVD.
  30. 30th September 1984Give two reasons why network communication is divided into layers.