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Daily Practice · GCSE Computer Science

May 2000 - GCSE Computer Science 5-a-day

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

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May 2000

31 sheets · 155 questions · GCSE

May 2000 compilationAll answers

Every sheet in May 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 May 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.
  2. 2nd May 2000An array named temps holds 12 values. State the index of the first item and the index of the last item.
  3. 3rd May 2000A mono sound clip has a sample rate of 4000 Hz and lasts 2 seconds. Calculate the total number of samples taken.
  4. 4th May 2000State the type of program that is typically stored in ROM.
  5. 5th May 2000State one reason a small business might choose to use open source software instead of proprietary (closed source) software.
  6. 6th May 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.
  7. 7th May 2000Give one specific way this code could be refined without changing what it does: a = 5, b = 3, c = a + b, PRINT c
  8. 8th May 2000State the typical maximum capacity of a single-layer DVD.
  9. 9th May 2000State the difference between HTTP and HTTPS, and give one situation where HTTPS is essential.
  10. 10th May 2000State what is meant by a syntax error.
  11. 11th May 2000A 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.
  12. 12th May 2000What type of utility software reorganises files on a hard disk so fragmented parts are stored closer together?
  13. 13th May 2000Calculate the maximum number of comparisons required by a binary search on a sorted list of 512 items.
  14. 14th May 2000Given P = 0 and Q = 1, state the value of P OR Q.
  15. 15th May 2000Convert the hexadecimal number FF to an 8-bit binary number.
  16. 16th May 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.
  17. 17th May 2000State why a program written in a high level language must be translated.
  18. 18th May 2000Convert the 4-bit binary number 1101 to denary.
  19. 19th May 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.
  20. 20th May 2000State why an organisation might employ penetration testers to test its network.
  21. 21st May 2000Describe what a nested loop does when it processes a 2D array.
  22. 22nd May 2000State one example of a file format that commonly uses lossy compression.
  23. 23rd May 2000State how many bits are in one byte, and how many bytes are in one kibibyte (KiB).
  24. 24th May 2000State whether the source code of proprietary (closed source) software is normally available for the public to view.
  25. 25th May 2000Write one line of pseudocode that converts the string stored in heightInput into a real number and stores it in a variable called height.
  26. 26th May 2000State the correct order of the three operations used to read data from a text file.
  27. 27th May 2000Order these units of data from smallest to largest: megabyte, byte, gigabyte, kilobyte.
  28. 28th May 2000Give two reasons why network communication is divided into layers.
  29. 29th May 2000Give one example of erroneous test data for a field that only accepts whole numbers from 1 to 10.
  30. 30th May 2000A table called products has fields productId, name, price and stock. Write an SQL statement that changes the price of the product with productId 7 to 15.99.
  31. 31st May 2000Each pair from the previous question is stored using 2 bytes. Calculate the compression ratio achieved, given the uncompressed row (1 byte per pixel) uses 8 bytes.