Daily Practice · GCSE Computer Science
February 2013 - GCSE Computer Science 5-a-day
Every GCSE Computer Science sheet published in February 2013, with answers. Systems, data representation, networks, algorithms and programming.
Every sheet in February 2013
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st February 2013Which piece of UK legislation controls how organisations must store and use people's personal data?
- 2nd February 2013Given x = 5 and y = 8, state whether x < y AND x > 0 evaluates to True or False.
- 3rd February 2013State the value returned by LENGTH(word) if word stores the string 'Computer'.
- 4th February 2013Give one reason why RAM on its own is not enough, and a computer also needs secondary storage.
- 5th February 2013State the difference between HTTP and HTTPS, and give one situation where HTTPS is essential.
- 6th February 2013A password field requires between 6 and 12 characters. State two boundary data values that should be used to test this field.
- 7th February 2013A 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.
- 8th February 2013State one function carried out by the operating system of a computer.
- 9th February 2013In computational thinking, what is meant by the term 'decomposition'?
- 10th February 2013Given A = 1 and B = 1, state the value of A AND B.
- 11th February 2013State how many different values can be represented using 5 bits, and explain your reasoning.
- 12th February 2013Define a peer-to-peer network.
- 13th February 2013State why a program written in a high level language must be translated.
- 14th February 2013Convert the denary number 5 to a 4-bit binary number.
- 15th February 2013A CPU has a clock speed of 4.0 GHz. Calculate how many clock cycles it completes in 2 seconds.
- 16th February 2013A 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.
- 17th February 2013Describe what a nested loop does when it processes a 2D array.
- 18th February 2013A mono sound clip has a sample rate of 4000 Hz and lasts 2 seconds. Calculate the total number of samples taken.
- 19th February 2013State the type of program that is typically stored in ROM.
- 20th February 2013State one reason a small business might choose to use open source software instead of proprietary (closed source) software.
- 21st February 2013A FOR loop runs: total = 0, FOR i = 1 TO 4, total = total + i, NEXT i. State the value of total after the loop finishes.
- 22nd February 2013State the key difference between a procedure and a function.
- 23rd February 2013State the typical maximum capacity of a single-layer DVD.
- 24th February 2013Give two reasons why network communication is divided into layers.
- 25th February 2013State what is meant by a syntax error.
- 26th February 2013Give one advantage of a relational database over a flat-file database.
- 27th February 2013What type of utility software reorganises files on a hard disk so fragmented parts are stored closer together?
- 28th February 2013Calculate the maximum number of comparisons required by a binary search on a sorted list of 512 items.