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Daily Practice · GCSE Computer Science

July 2002 - GCSE Computer Science 5-a-day

Every GCSE Computer Science sheet published in July 2002, with answers. Systems, data representation, networks, algorithms and programming.

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July 2002

31 sheets · 155 questions · GCSE

July 2002 compilationAll answers

Every sheet in July 2002

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

  1. 1st July 2002In computational thinking, what is meant by the term 'decomposition'?
  2. 2nd July 2002Given A = 1 and B = 1, state the value of A AND B.
  3. 3rd July 2002Convert the denary number 200 to hexadecimal, showing your working.
  4. 4th July 2002Define a peer-to-peer network.
  5. 5th July 2002A 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.
  6. 6th July 2002Convert the denary number 5 to a 4-bit binary number.
  7. 7th July 2002A CPU has a clock speed of 4.0 GHz. Calculate how many clock cycles it completes in 2 seconds.
  8. 8th July 2002A 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.
  9. 9th July 2002An array named temps holds 12 values. State the index of the first item and the index of the last item.
  10. 10th July 2002A mono sound clip has a sample rate of 4000 Hz and lasts 2 seconds. Calculate the total number of samples taken.
  11. 11th July 2002State the type of program that is typically stored in ROM.
  12. 12th July 2002State one reason a small business might choose to use open source software instead of proprietary (closed source) software.
  13. 13th July 2002A FOR loop runs: total = 0, FOR i = 1 TO 4, total = total + i, NEXT i. State the value of total after the loop finishes.
  14. 14th July 2002State the pseudocode operator commonly used to join (concatenate) two strings, then show how it joins 'Rev' and 'ision' to produce 'Revision'.
  15. 15th July 2002State the typical maximum capacity of a single-layer DVD.
  16. 16th July 2002State the difference between HTTP and HTTPS, and give one situation where HTTPS is essential.
  17. 17th July 2002State what is meant by a syntax error.
  18. 18th July 2002Define the term 'primary key' as used in a database table.
  19. 19th July 2002What type of utility software reorganises files on a hard disk so fragmented parts are stored closer together?
  20. 20th July 2002Calculate the maximum number of comparisons required by a binary search on a sorted list of 512 items.
  21. 21st July 2002Given P = 0 and Q = 1, state the value of P OR Q.
  22. 22nd July 2002Convert the 8-bit binary number 10110100 directly to hexadecimal by splitting it into nibbles.
  23. 23rd July 2002A network administrator is connecting 10 computers in a server room. Calculate the number of cables needed for a full mesh topology, and state the number needed for a star topology with one central switch.
  24. 24th July 2002State why a program written in a high level language must be translated.
  25. 25th July 2002Convert the 4-bit binary number 1101 to denary.
  26. 26th July 2002Two CPUs are compared for a task optimised for multiple cores: CPU A has 2 cores at 4.2 GHz; CPU B has 6 cores at 3.0 GHz. Explain which CPU is likely to perform better for this task.
  27. 27th July 2002State why an organisation might employ penetration testers to test its network.
  28. 28th July 2002Describe what a nested loop does when it processes a 2D array.
  29. 29th July 2002State one example of a file format that commonly uses lossy compression.
  30. 30th July 2002State how many bits are in one byte, and how many bytes are in one kibibyte (KiB).
  31. 31st July 2002State whether the source code of proprietary (closed source) software is normally available for the public to view.