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Daily Practice · GCSE Computer Science

January 2000 - GCSE Computer Science 5-a-day

Every GCSE Computer Science sheet published in January 2000, with answers. Systems, data representation, networks, algorithms and programming.

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January 2000

31 sheets · 155 questions · GCSE

January 2000 compilationAll answers

Every sheet in January 2000

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

  1. 1st January 2000In computational thinking, what is meant by the term 'decomposition'?
  2. 2nd January 2000Given A = 1 and B = 1, state the value of A AND B.
  3. 3rd January 2000Convert the denary number 200 to hexadecimal, showing your working.
  4. 4th January 2000Define a peer-to-peer network.
  5. 5th January 2000State why a program written in a high level language must be translated.
  6. 6th January 2000Convert the denary number 5 to a 4-bit binary number.
  7. 7th January 2000A CPU has a clock speed of 4.0 GHz. Calculate how many clock cycles it completes in 2 seconds.
  8. 8th January 2000A 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 January 2000Describe what a nested loop does when it processes a 2D array.
  10. 10th January 2000A mono sound clip has a sample rate of 4000 Hz and lasts 2 seconds. Calculate the total number of samples taken.
  11. 11th January 2000State the type of program that is typically stored in ROM.
  12. 12th January 2000State one reason a small business might choose to use open source software instead of proprietary (closed source) software.
  13. 13th January 2000A 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 January 2000State the pseudocode operator commonly used to join (concatenate) two strings, then show how it joins 'Rev' and 'ision' to produce 'Revision'.
  15. 15th January 2000State the typical maximum capacity of a single-layer DVD.
  16. 16th January 2000Give two reasons why network communication is divided into layers.
  17. 17th January 2000State what is meant by a syntax error.
  18. 18th January 2000Define the term 'primary key' as used in a database table.
  19. 19th January 2000What type of utility software reorganises files on a hard disk so fragmented parts are stored closer together?
  20. 20th January 2000Calculate the maximum number of comparisons required by a binary search on a sorted list of 512 items.
  21. 21st January 2000Given P = 0 and Q = 1, state the value of P OR Q.
  22. 22nd January 2000Convert the 8-bit binary number 10110100 directly to hexadecimal by splitting it into nibbles.
  23. 23rd January 2000A 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 January 2000Explain why an interpreter is often preferred while a program is being written.
  25. 25th January 2000Convert the 4-bit binary number 1101 to denary.
  26. 26th January 2000Two 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 January 2000State why an organisation might employ penetration testers to test its network.
  28. 28th January 2000A 2D array grid is declared as grid[4][6]. State how many rows and columns it has and how many elements it holds in total.
  29. 29th January 2000State one example of a file format that commonly uses lossy compression.
  30. 30th January 2000State how many bits are in one byte, and how many bytes are in one kibibyte (KiB).
  31. 31st January 2000State whether the source code of proprietary (closed source) software is normally available for the public to view.