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Daily Practice · GCSE Computer Science

April 2001 - GCSE Computer Science 5-a-day

Every GCSE Computer Science sheet published in April 2001, with answers. Systems, data representation, networks, algorithms and programming.

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April 2001

30 sheets · 150 questions · GCSE

April 2001 compilationAll answers

Every sheet in April 2001

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 2001In computational thinking, what is meant by the term 'decomposition'?
  2. 2nd April 2001Given A = 1 and B = 1, state the value of A AND B.
  3. 3rd April 2001Convert the denary number 200 to hexadecimal, showing your working.
  4. 4th April 2001Define a peer-to-peer network.
  5. 5th April 2001Give one advantage and one disadvantage of using a compiler.
  6. 6th April 2001Convert the denary number 5 to a 4-bit binary number.
  7. 7th April 2001A CPU has a clock speed of 4.0 GHz. Calculate how many clock cycles it completes in 2 seconds.
  8. 8th April 2001A 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 April 2001Write a loop in pseudocode that outputs every element of a 1D array named names of length 6.
  10. 10th April 2001A mono sound clip has a sample rate of 4000 Hz and lasts 2 seconds. Calculate the total number of samples taken.
  11. 11th April 2001State the type of program that is typically stored in ROM.
  12. 12th April 2001State one reason a small business might choose to use open source software instead of proprietary (closed source) software.
  13. 13th April 2001A 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 April 2001State the pseudocode operator commonly used to join (concatenate) two strings, then show how it joins 'Rev' and 'ision' to produce 'Revision'.
  15. 15th April 2001State the typical maximum capacity of a single-layer DVD.
  16. 16th April 2001A user reads the same email on a phone and a tablet, and deleting it on one deletes it on the other. Which protocol is in use and why?
  17. 17th April 2001State what is meant by a syntax error.
  18. 18th April 2001Define the term 'primary key' as used in a database table.
  19. 19th April 2001What type of utility software reorganises files on a hard disk so fragmented parts are stored closer together?
  20. 20th April 2001Calculate the maximum number of comparisons required by a binary search on a sorted list of 512 items.
  21. 21st April 2001Given P = 0 and Q = 1, state the value of P OR Q.
  22. 22nd April 2001Convert the 8-bit binary number 10110100 directly to hexadecimal by splitting it into nibbles.
  23. 23rd April 2001A 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 April 2001Name the translator used for assembly language and describe how it differs from a compiler.
  25. 25th April 2001Convert the 4-bit binary number 1101 to denary.
  26. 26th April 2001Two 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 April 2001State why an organisation might employ penetration testers to test its network.
  28. 28th April 2001Explain what happens if a program tries to read index 5 of an array declared with 5 elements.
  29. 29th April 2001State one example of a file format that commonly uses lossy compression.
  30. 30th April 2001State how many bits are in one byte, and how many bytes are in one kibibyte (KiB).