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Daily Practice · GCSE Computer Science

February 2018 - GCSE Computer Science 5-a-day

Every GCSE Computer Science sheet published in February 2018, with answers. Systems, data representation, networks, algorithms and programming.

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February 2018

28 sheets · 140 questions · GCSE

February 2018 compilationAll answers

Every sheet in February 2018

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

  1. 1st February 2018State the value returned by LENGTH(word) if word stores the string 'Computer'.
  2. 2nd February 2018Give one reason why RAM on its own is not enough, and a computer also needs secondary storage.
  3. 3rd February 2018Define the term protocol.
  4. 4th February 2018A password field requires between 6 and 12 characters. State two boundary data values that should be used to test this field.
  5. 5th February 2018A 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.
  6. 6th February 2018State one function carried out by the operating system of a computer.
  7. 7th February 2018In computational thinking, what is meant by the term 'decomposition'?
  8. 8th February 2018Given A = 1 and B = 1, state the value of A AND B.
  9. 9th February 2018State how many different values can be represented using 5 bits, and explain your reasoning.
  10. 10th February 2018Define a peer-to-peer network.
  11. 11th February 2018Explain the purpose of a breakpoint.
  12. 12th February 2018Convert the denary number 5 to a 4-bit binary number.
  13. 13th February 2018A CPU has a clock speed of 4.0 GHz. Calculate how many clock cycles it completes in 2 seconds.
  14. 14th February 2018A 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.
  15. 15th February 2018Explain why a running maximum should be initialised to the first element of the array rather than to 0.
  16. 16th February 2018A mono sound clip has a sample rate of 4000 Hz and lasts 2 seconds. Calculate the total number of samples taken.
  17. 17th February 2018State the type of program that is typically stored in ROM.
  18. 18th February 2018State one reason a small business might choose to use open source software instead of proprietary (closed source) software.
  19. 19th February 2018A FOR loop runs: total = 0, FOR i = 1 TO 4, total = total + i, NEXT i. State the value of total after the loop finishes.
  20. 20th February 2018State the key difference between a procedure and a function.
  21. 21st February 2018State the typical maximum capacity of a single-layer DVD.
  22. 22nd February 2018Name the four layers of the TCP/IP model in order from the one closest to the user.
  23. 23rd February 2018State what is meant by a syntax error.
  24. 24th February 2018Give one advantage of a relational database over a flat-file database.
  25. 25th February 2018What type of utility software reorganises files on a hard disk so fragmented parts are stored closer together?
  26. 26th February 2018Calculate the maximum number of comparisons required by a binary search on a sorted list of 512 items.
  27. 27th February 2018Given P = 0 and Q = 1, state the value of P OR Q.
  28. 28th February 2018Convert the hexadecimal number 3F to denary.