Daily Practice · GCSE Computer Science
February 2014 - GCSE Computer Science 5-a-day
Every GCSE Computer Science sheet published in February 2014, with answers. Systems, data representation, networks, algorithms and programming.
Every sheet in February 2014
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st February 2014Define the term protocol.
- 2nd February 2014State what is meant by a syntax error.
- 3rd February 2014A table called members has fields memberId, firstName, lastName and joinYear. Write an SQL statement that adds a new record with memberId 12, firstName 'Priya', lastName 'Shah' and joinYear 2026.
- 4th February 2014What type of utility software reorganises files on a hard disk so fragmented parts are stored closer together?
- 5th February 2014Calculate the maximum number of comparisons required by a binary search on a sorted list of 512 items.
- 6th February 2014Given P = 0 and Q = 1, state the value of P OR Q.
- 7th February 2014Convert the hexadecimal number FF to an 8-bit binary number.
- 8th February 2014A 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.
- 9th February 2014Explain the purpose of a breakpoint.
- 10th February 2014Convert the 4-bit binary number 1101 to denary.
- 11th February 2014Two 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.
- 12th February 2014State why an organisation might employ penetration testers to test its network.
- 13th February 2014Explain why a running maximum should be initialised to the first element of the array rather than to 0.
- 14th February 2014State one example of a file format that commonly uses lossy compression.
- 15th February 2014State how many bits are in one byte, and how many bytes are in one kibibyte (KiB).
- 16th February 2014State whether the source code of proprietary (closed source) software is normally available for the public to view.
- 17th February 2014Write one line of pseudocode that converts the string stored in heightInput into a real number and stores it in a variable called height.
- 18th February 2014State the correct order of the three operations used to read data from a text file.
- 19th February 2014Order these units of data from smallest to largest: megabyte, byte, gigabyte, kilobyte.
- 20th February 2014Name the four layers of the TCP/IP model in order from the one closest to the user.
- 21st February 2014Give one example of erroneous test data for a field that only accepts whole numbers from 1 to 10.
- 22nd February 2014A table called products has fields productId, name, price and stock. Write an SQL statement that changes the price of the product with productId 7 to 15.99.
- 23rd February 2014Each pair from the previous question is stored using 2 bytes. Calculate the compression ratio achieved, given the uncompressed row (1 byte per pixel) uses 8 bytes.
- 24th February 2014Which flowchart symbol shape is used to represent a decision point (e.g. a yes/no branch)?
- 25th February 2014State the two values a Boolean data type can hold.
- 26th February 2014Convert the denary number 200 to hexadecimal, showing your working.
- 27th February 2014Calculate the number of cables needed to connect 8 computers in a full mesh topology, where every computer connects directly to every other computer.
- 28th February 2014A program compiles and runs but always outputs an average that is too small. State the type of error and explain why the translator did not report it.