Daily Practice · GCSE Computer Science
February 2019 - GCSE Computer Science 5-a-day
Every GCSE Computer Science sheet published in February 2019, with answers. Systems, data representation, networks, algorithms and programming.
Every sheet in February 2019
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st February 2019A 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.
- 2nd February 2019What type of utility software reorganises files on a hard disk so fragmented parts are stored closer together?
- 3rd February 2019Calculate the maximum number of comparisons required by a binary search on a sorted list of 512 items.
- 4th February 2019Given P = 0 and Q = 1, state the value of P OR Q.
- 5th February 2019Convert the hexadecimal number FF to an 8-bit binary number.
- 6th February 2019A 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.
- 7th February 2019Give one advantage and one disadvantage of using a compiler.
- 8th February 2019Convert the 4-bit binary number 1101 to denary.
- 9th February 2019Two 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.
- 10th February 2019State why an organisation might employ penetration testers to test its network.
- 11th February 2019Write a loop in pseudocode that outputs every element of a 1D array named names of length 6.
- 12th February 2019State one example of a file format that commonly uses lossy compression.
- 13th February 2019State how many bits are in one byte, and how many bytes are in one kibibyte (KiB).
- 14th February 2019State whether the source code of proprietary (closed source) software is normally available for the public to view.
- 15th February 2019Write one line of pseudocode that converts the string stored in heightInput into a real number and stores it in a variable called height.
- 16th February 2019State the correct order of the three operations used to read data from a text file.
- 17th February 2019Order these units of data from smallest to largest: megabyte, byte, gigabyte, kilobyte.
- 18th February 2019A 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?
- 19th February 2019Give one example of erroneous test data for a field that only accepts whole numbers from 1 to 10.
- 20th February 2019A 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.
- 21st February 2019Each 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.
- 22nd February 2019Which flowchart symbol shape is used to represent a decision point (e.g. a yes/no branch)?
- 23rd February 2019State the two values a Boolean data type can hold.
- 24th February 2019Convert the denary number 200 to hexadecimal, showing your working.
- 25th February 2019Calculate the number of cables needed to connect 8 computers in a full mesh topology, where every computer connects directly to every other computer.
- 26th February 2019Name the translator used for assembly language and describe how it differs from a compiler.
- 27th February 2019Convert the hexadecimal number 1A to denary.
- 28th February 2019Convert the denary number 156 to an 8 bit binary number.