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Daily Practice · GCSE Computer Science

May 2009 - GCSE Computer Science 5-a-day

Every GCSE Computer Science sheet published in May 2009, with answers. Systems, data representation, networks, algorithms and programming.

← Today's GCSE Computer Science sheet

May 2009

31 sheets · 155 questions · GCSE

May 2009 compilationAll answers

Every sheet in May 2009

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 2009State what the term malware means.
  2. 2nd May 2009Explain what happens if a program tries to read index 5 of an array declared with 5 elements.
  3. 3rd May 2009An uncompressed file is 6000 KB. After lossless compression it is 1500 KB. Calculate the compression ratio in the form n:1 (original size : compressed size).
  4. 4th May 2009Which of RAM and ROM is volatile, meaning its contents are lost when the power is removed?
  5. 5th May 2009Which piece of UK legislation controls how organisations must store and use people's personal data?
  6. 6th May 2009Given x = 5 and y = 8, state whether x < y AND x > 0 evaluates to True or False.
  7. 7th May 2009State the value returned by LENGTH(word) if word stores the string 'Computer'.
  8. 8th May 2009Give one reason why RAM on its own is not enough, and a computer also needs secondary storage.
  9. 9th May 2009Define the term protocol.
  10. 10th May 2009A password field requires between 6 and 12 characters. State two boundary data values that should be used to test this field.
  11. 11th May 2009A table called books has fields bookId, title, authorId and copiesAvailable. Write an SQL statement that selects the title of every book with more than 2 copies available.
  12. 12th May 2009State one function carried out by the operating system of a computer.
  13. 13th May 2009In computational thinking, what is meant by the term 'decomposition'?
  14. 14th May 2009Given A = 1 and B = 1, state the value of A AND B.
  15. 15th May 2009State how many different values can be represented using 5 bits, and explain your reasoning.
  16. 16th May 2009Define a peer-to-peer network.
  17. 17th May 2009Explain the purpose of a breakpoint.
  18. 18th May 2009Convert the denary number 5 to a 4-bit binary number.
  19. 19th May 2009A CPU has a clock speed of 4.0 GHz. Calculate how many clock cycles it completes in 2 seconds.
  20. 20th May 2009A 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.
  21. 21st May 2009Explain why a running maximum should be initialised to the first element of the array rather than to 0.
  22. 22nd May 2009A mono sound clip has a sample rate of 4000 Hz and lasts 2 seconds. Calculate the total number of samples taken.
  23. 23rd May 2009State the type of program that is typically stored in ROM.
  24. 24th May 2009State one reason a small business might choose to use open source software instead of proprietary (closed source) software.
  25. 25th May 2009A FOR loop runs: total = 0, FOR i = 1 TO 4, total = total + i, NEXT i. State the value of total after the loop finishes.
  26. 26th May 2009State the key difference between a procedure and a function.
  27. 27th May 2009State the typical maximum capacity of a single-layer DVD.
  28. 28th May 2009Name the four layers of the TCP/IP model in order from the one closest to the user.
  29. 29th May 2009State what is meant by a syntax error.
  30. 30th May 2009Give one advantage of a relational database over a flat-file database.
  31. 31st May 2009What type of utility software reorganises files on a hard disk so fragmented parts are stored closer together?