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Daily Practice · GCSE Computer Science

December 2005 - GCSE Computer Science 5-a-day

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

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December 2005

31 sheets · 155 questions · GCSE

December 2005 compilationAll answers

Every sheet in December 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 December 2005Give one reason why RAM on its own is not enough, and a computer also needs secondary storage.
  2. 2nd December 2005State the layer that IP operates in, and describe its job.
  3. 3rd December 2005A password field requires between 6 and 12 characters. State two boundary data values that should be used to test this field.
  4. 4th December 2005A table called staff has fields staffId, name, department and salary, storing these records: staffId | name | department | salary, 1 | Ben | Sales | 24000, 2 | Chloe | IT | 31000, 3 | Dan | Sales | 27000. State which staffId(s) would be returned by: SELECT staffId FROM staff WHERE department = 'Sales' AND salary > 25000;
  5. 5th December 2005State one function carried out by the operating system of a computer.
  6. 6th December 2005In computational thinking, what is meant by the term 'decomposition'?
  7. 7th December 2005Given A = 1 and B = 1, state the value of A AND B.
  8. 8th December 2005Convert the 8-bit binary number 01011010 to denary.
  9. 9th December 2005Define a peer-to-peer network.
  10. 10th December 2005Describe what syntax highlighting is and how it helps a programmer.
  11. 11th December 2005Convert the denary number 5 to a 4-bit binary number.
  12. 12th December 2005A CPU has a clock speed of 4.0 GHz. Calculate how many clock cycles it completes in 2 seconds.
  13. 13th December 2005A 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.
  14. 14th December 2005Trace this algorithm with data = [4, 9, 2, 9, 7] and state the final output. total = 0; count = 0; for i = 0 to 4: if data[i] > 5 then total = total + data[i] and count = count + 1; next i; print(total, count).
  15. 15th December 2005A mono sound clip has a sample rate of 4000 Hz and lasts 2 seconds. Calculate the total number of samples taken.
  16. 16th December 2005State the type of program that is typically stored in ROM.
  17. 17th December 2005State one reason a small business might choose to use open source software instead of proprietary (closed source) software.
  18. 18th December 2005A FOR loop runs: total = 0, FOR i = 1 TO 4, total = total + i, NEXT i. State the value of total after the loop finishes.
  19. 19th December 2005Write the pseudocode header and body for a function called isAdult that takes one integer parameter called age and returns True if age is 18 or over.
  20. 20th December 2005State the typical maximum capacity of a single-layer DVD.
  21. 21st December 2005Explain the role of TCP when a large file is downloaded.
  22. 22nd December 2005State what is meant by a syntax error.
  23. 23rd December 2005State what a foreign key is used for.
  24. 24th December 2005What type of utility software reorganises files on a hard disk so fragmented parts are stored closer together?
  25. 25th December 2005Calculate the maximum number of comparisons required by a binary search on a sorted list of 512 items.
  26. 26th December 2005Given P = 0 and Q = 1, state the value of P OR Q.
  27. 27th December 2005A pseudocode algorithm is: count <- 0, x <- 10, WHILE x > 0, count <- count + 1, x <- x - 3, ENDWHILE, OUTPUT count. Complete a trace table for x and count, laid out as x | count, then state the value output.
  28. 28th December 2005A 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.
  29. 29th December 2005Give one advantage and one disadvantage of using a compiler.
  30. 30th December 2005Convert the 4-bit binary number 1101 to denary.
  31. 31st December 2005Two 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.