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Daily Practice · GCSE Computer Science

April 1988 5-a-day

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April 1988

30 sheets · 150 questions · GCSE

April 1988 compilationAll answers

Every sheet in April 1988

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 1988Convert the denary number 39 to an 8-bit binary number, showing your working.
  2. 2nd April 1988Calculate the number of cables needed to connect 8 computers in a full mesh topology, where every computer connects directly to every other computer.
  3. 3rd April 1988Explain the purpose of a breakpoint.
  4. 4th April 1988Convert the hexadecimal number 1A to denary.
  5. 5th April 1988Convert the denary number 156 to an 8 bit binary number.
  6. 6th April 1988Which type of malware can replicate itself and spread across a network without attaching to another program or needing a user to run it?
  7. 7th April 1988Explain why a running maximum should be initialised to the first element of the array rather than to 0.
  8. 8th April 1988An image uses a colour depth of 2 bits per pixel. Calculate the maximum number of different colours it can represent.
  9. 9th April 1988A CPU's cache has a hit rate of 80%. During a task the CPU makes 4000 requests for data. Calculate the number of cache hits and cache misses.
  10. 10th April 1988Describe two negative consequences of throwing away old computer hardware instead of recycling it.
  11. 11th April 1988Write a function called isEven that takes one integer parameter, num, and returns True if num is even and False otherwise.
  12. 12th April 1988Give one specific way this code could be refined without changing what it does: a = 5, b = 3, c = a + b, PRINT c
  13. 13th April 1988A company backs up its files onto magnetic tape cartridges, each with a capacity of 3 TB. The company needs to back up 20 TB of data. Calculate the minimum number of cartridges needed.
  14. 14th April 1988Name the four layers of the TCP/IP model in order from the one closest to the user.
  15. 15th April 1988Explain why iterative testing, carried out throughout development, tends to make errors cheaper to fix than relying only on final testing.
  16. 16th April 1988A table called members has fields memberId, firstName, lastName and joinYear. Write an SQL statement that adds a new record with memberId 12, firstName 'Priya', lastName 'Shah' and joinYear 2026.
  17. 17th April 1988Define the term 'interrupt' as used to describe a signal received by a CPU.
  18. 18th April 1988An array called items contains [12, 45, 7, 30, 19] at indices 0 to 4. Describe how a linear search would locate the value 30, stating the number of comparisons needed.
  19. 19th April 1988Evaluate X = NOT A AND B when A = 0 and B = 1.
  20. 20th April 1988Convert the hexadecimal number FF to an 8-bit binary number.
  21. 21st April 1988Give one advantage of a star topology compared with a mesh topology.
  22. 22nd April 1988A program compiles and runs but always outputs an average that is too small. State the type of error and explain why the translator did not report it.
  23. 23rd April 1988Add the 8-bit binary numbers 00101101 and 00010011, giving your answer as an 8-bit binary number.
  24. 24th April 1988State the three stages of the fetch-decode-execute cycle in the order they occur.
  25. 25th April 1988State one weakness of a simple shift cipher compared to modern encryption methods used on networks.
  26. 26th April 1988An array named temps holds 12 values. State the index of the first item and the index of the last item.
  27. 27th April 1988Define the term 'pixel'.
  28. 28th April 1988Order these from fastest access speed to slowest: RAM, cache, registers, secondary storage.
  29. 29th April 1988Which piece of UK legislation makes it a criminal offence to gain unauthorised access to a computer system?
  30. 30th April 1988Evaluate the expression 23 DIV 4.