Revision Library
/Subjects/Computer Science/Daily Practice
Daily Practice · GCSE Computer Science

March 2012 - GCSE Computer Science 5-a-day

Every GCSE Computer Science sheet published in March 2012, with answers. Systems, data representation, networks, algorithms and programming.

← Today's GCSE Computer Science sheet

March 2012

31 sheets · 155 questions · GCSE

March 2012 compilationAll answers

Every sheet in March 2012

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

  1. 1st March 2012A password field requires between 6 and 12 characters. State two boundary data values that should be used to test this field.
  2. 2nd March 2012A 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 March 2012State one function carried out by the operating system of a computer.
  4. 4th March 2012In computational thinking, what is meant by the term 'decomposition'?
  5. 5th March 2012Given A = 1 and B = 1, state the value of A AND B.
  6. 6th March 2012Convert the 8-bit binary number 01011010 to denary.
  7. 7th March 2012Define a peer-to-peer network.
  8. 8th March 2012Give one advantage and one disadvantage of using a compiler.
  9. 9th March 2012Convert the denary number 5 to a 4-bit binary number.
  10. 10th March 2012A CPU has a clock speed of 4.0 GHz. Calculate how many clock cycles it completes in 2 seconds.
  11. 11th March 2012A 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 March 2012Write a loop in pseudocode that outputs every element of a 1D array named names of length 6.
  13. 13th March 2012A mono sound clip has a sample rate of 4000 Hz and lasts 2 seconds. Calculate the total number of samples taken.
  14. 14th March 2012State the type of program that is typically stored in ROM.
  15. 15th March 2012State one reason a small business might choose to use open source software instead of proprietary (closed source) software.
  16. 16th March 2012A 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 March 2012Write 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 March 2012State the typical maximum capacity of a single-layer DVD.
  19. 19th March 2012A 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?
  20. 20th March 2012State what is meant by a syntax error.
  21. 21st March 2012State what a foreign key is used for.
  22. 22nd March 2012What type of utility software reorganises files on a hard disk so fragmented parts are stored closer together?
  23. 23rd March 2012Calculate the maximum number of comparisons required by a binary search on a sorted list of 512 items.
  24. 24th March 2012Given P = 0 and Q = 1, state the value of P OR Q.
  25. 25th March 2012A 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 March 2012A 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 March 2012Name the translator used for assembly language and describe how it differs from a compiler.
  28. 28th March 2012Convert the 4-bit binary number 1101 to denary.
  29. 29th March 2012Two 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 March 2012State why an organisation might employ penetration testers to test its network.
  31. 31st March 2012Explain what happens if a program tries to read index 5 of an array declared with 5 elements.