Daily Practice · GCSE Computer Science
February 2022 - GCSE Computer Science 5-a-day
Every GCSE Computer Science sheet published in February 2022, with answers. Systems, data representation, networks, algorithms and programming.
Every sheet in February 2022
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st February 2022A streaming company records which shows each user watches and uses this to recommend similar shows. Explain one ethical concern this could raise, even if the company only uses the data to improve recommendations.
- 2nd February 2022State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.
- 3rd February 2022State the pseudocode operator commonly used to join (concatenate) two strings, then show how it joins 'Rev' and 'ision' to produce 'Revision'.
- 4th February 2022Give one example of an optical secondary storage device.
- 5th February 2022Define the term protocol.
- 6th February 2022State the term used for realistic data that a program would be expected to handle during normal use.
- 7th February 2022Define the term 'primary key' as used in a database table.
- 8th February 2022State the difference between lossy and lossless compression.
- 9th February 2022State the condition that must be met before a binary search can be used on an array.
- 10th February 2022A logic circuit has inputs C and D. C feeds into a NOT gate; the output of the NOT gate and D feed into an OR gate, giving output Y. Write the Boolean expression for Y and state its value when C = 1 and D = 0.
- 11th February 2022Convert the 8-bit binary number 10110100 directly to hexadecimal by splitting it into nibbles.
- 12th February 2022Which piece of network hardware connects a LAN to another network such as the internet, directing data packets based on IP address?
- 13th February 2022Explain the purpose of a breakpoint.
- 14th February 2022Convert the denary number 45 to hexadecimal.
- 15th February 2022What does the acronym CPU stand for?
- 16th February 2022State what the term malware means.
- 17th February 2022Explain why a running maximum should be initialised to the first element of the array rather than to 0.
- 18th February 2022An 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).
- 19th February 2022Which of RAM and ROM is volatile, meaning its contents are lost when the power is removed?
- 20th February 2022Which piece of UK legislation controls how organisations must store and use people's personal data?
- 21st February 2022Given x = 5 and y = 8, state whether x < y AND x > 0 evaluates to True or False.
- 22nd February 2022A function is defined as: FUNCTION addTax(price) RETURN price x 1.2 ENDFUNCTION. Another line of code runs: total <- addTax(20) + addTax(30). Trace both function calls and state the final value of total.
- 23rd February 2022Give one reason why RAM on its own is not enough, and a computer also needs secondary storage.
- 24th February 2022Name the four layers of the TCP/IP model in order from the one closest to the user.
- 25th February 2022A password field requires between 6 and 12 characters. State two boundary data values that should be used to test this field.
- 26th February 2022A table called staff has fields staffId, name, department and salary, storing these records: staffId | name | department | salary, 1 | Ben | Sales | 24000, 2 | Chloe | IT | 31000, 3 | Dan | Sales | 27000. State which staffId(s) would be returned by: SELECT staffId FROM staff WHERE department = 'Sales' AND salary > 25000;
- 27th February 2022State one function carried out by the operating system of a computer.
- 28th February 2022In computational thinking, what is meant by the term 'decomposition'?