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Daily Practice · GCSE Computer Science

June 2005 - GCSE Computer Science 5-a-day

Every GCSE Computer Science sheet published in June 2005, with answers. Systems, data representation, networks, algorithms and programming.

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June 2005

30 sheets · 150 questions · GCSE

June 2005 compilationAll answers

Every sheet in June 2005

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

  1. 1st June 2005Convert the denary number 200 to hexadecimal, showing your working.
  2. 2nd June 2005Calculate 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 June 2005A 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.
  4. 4th June 2005Convert the hexadecimal number 1A to denary.
  5. 5th June 2005Convert the denary number 156 to an 8 bit binary number.
  6. 6th June 2005Which 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 June 2005An array named temps holds 12 values. State the index of the first item and the index of the last item.
  8. 8th June 2005An image uses a colour depth of 2 bits per pixel. Calculate the maximum number of different colours it can represent.
  9. 9th June 2005A 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 June 2005Describe two negative consequences of throwing away old computer hardware instead of recycling it.
  11. 11th June 2005Write a function called isEven that takes one integer parameter, num, and returns True if num is even and False otherwise.
  12. 12th June 2005State the pseudocode operator commonly used to join (concatenate) two strings, then show how it joins 'Rev' and 'ision' to produce 'Revision'.
  13. 13th June 2005A 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 June 2005State the difference between HTTP and HTTPS, and give one situation where HTTPS is essential.
  15. 15th June 2005Explain why iterative testing, carried out throughout development, tends to make errors cheaper to fix than relying only on final testing.
  16. 16th June 2005Define the term 'primary key' as used in a database table.
  17. 17th June 2005Define the term 'interrupt' as used to describe a signal received by a CPU.
  18. 18th June 2005An 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 June 2005Evaluate X = NOT A AND B when A = 0 and B = 1.
  20. 20th June 2005Convert the 8-bit binary number 10110100 directly to hexadecimal by splitting it into nibbles.
  21. 21st June 2005Give one advantage of a star topology compared with a mesh topology.
  22. 22nd June 2005State why a program written in a high level language must be translated.
  23. 23rd June 2005Add the 8-bit binary numbers 00101101 and 00010011, giving your answer as an 8-bit binary number.
  24. 24th June 2005State the three stages of the fetch-decode-execute cycle in the order they occur.
  25. 25th June 2005State one weakness of a simple shift cipher compared to modern encryption methods used on networks.
  26. 26th June 2005Describe what a nested loop does when it processes a 2D array.
  27. 27th June 2005Define the term 'pixel'.
  28. 28th June 2005Order these from fastest access speed to slowest: RAM, cache, registers, secondary storage.
  29. 29th June 2005Which piece of UK legislation makes it a criminal offence to gain unauthorised access to a computer system?
  30. 30th June 2005Evaluate the expression 23 DIV 4.