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Daily Practice · GCSE Computer Science

December 2010 - GCSE Computer Science 5-a-day

Every GCSE Computer Science sheet published in December 2010, with answers. Systems, data representation, networks, algorithms and programming.

← Today's GCSE Computer Science sheet

December 2010

31 sheets · 155 questions · GCSE

December 2010 compilationAll answers

Every sheet in December 2010

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 2010A password field requires between 6 and 12 characters. State two boundary data values that should be used to test this field.
  2. 2nd December 2010A 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;
  3. 3rd December 2010State one function carried out by the operating system of a computer.
  4. 4th December 2010In computational thinking, what is meant by the term 'decomposition'?
  5. 5th December 2010Given A = 1 and B = 1, state the value of A AND B.
  6. 6th December 2010Convert the 8-bit binary number 01011010 to denary.
  7. 7th December 2010Define a peer-to-peer network.
  8. 8th December 2010State why a program written in a high level language must be translated.
  9. 9th December 2010Convert the denary number 5 to a 4-bit binary number.
  10. 10th December 2010A CPU has a clock speed of 4.0 GHz. Calculate how many clock cycles it completes in 2 seconds.
  11. 11th December 2010A 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.
  12. 12th December 2010Describe what a nested loop does when it processes a 2D array.
  13. 13th December 2010A mono sound clip has a sample rate of 4000 Hz and lasts 2 seconds. Calculate the total number of samples taken.
  14. 14th December 2010State the type of program that is typically stored in ROM.
  15. 15th December 2010State one reason a small business might choose to use open source software instead of proprietary (closed source) software.
  16. 16th December 2010A FOR loop runs: total = 0, FOR i = 1 TO 4, total = total + i, NEXT i. State the value of total after the loop finishes.
  17. 17th December 2010Write 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.
  18. 18th December 2010State the typical maximum capacity of a single-layer DVD.
  19. 19th December 2010Give two reasons why network communication is divided into layers.
  20. 20th December 2010State what is meant by a syntax error.
  21. 21st December 2010State what a foreign key is used for.
  22. 22nd December 2010What type of utility software reorganises files on a hard disk so fragmented parts are stored closer together?
  23. 23rd December 2010Calculate the maximum number of comparisons required by a binary search on a sorted list of 512 items.
  24. 24th December 2010Given P = 0 and Q = 1, state the value of P OR Q.
  25. 25th December 2010A 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.
  26. 26th December 2010A 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.
  27. 27th December 2010Explain why an interpreter is often preferred while a program is being written.
  28. 28th December 2010Convert the 4-bit binary number 1101 to denary.
  29. 29th December 2010Two 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.
  30. 30th December 2010State why an organisation might employ penetration testers to test its network.
  31. 31st December 2010A 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.