Daily Practice · GCSE Computer Science
June 1958 5-a-day
Every sheet in June 1958
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st June 1958A 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 June 1958State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.
- 3rd June 1958State the pseudocode operator commonly used to join (concatenate) two strings, then show how it joins 'Rev' and 'ision' to produce 'Revision'.
- 4th June 1958Give one example of an optical secondary storage device.
- 5th June 1958Name the four layers of the TCP/IP model in order from the one closest to the user.
- 6th June 1958State the term used for realistic data that a program would be expected to handle during normal use.
- 7th June 1958Define the term 'primary key' as used in a database table.
- 8th June 1958State the difference between lossy and lossless compression.
- 9th June 1958State the condition that must be met before a binary search can be used on an array.
- 10th June 1958A 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 June 1958Convert the 8-bit binary number 10110100 directly to hexadecimal by splitting it into nibbles.
- 12th June 1958Which piece of network hardware connects a LAN to another network such as the internet, directing data packets based on IP address?
- 13th June 1958A 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.
- 14th June 1958Convert the denary number 45 to hexadecimal.
- 15th June 1958What does the acronym CPU stand for?
- 16th June 1958State what the term malware means.
- 17th June 1958An array named temps holds 12 values. State the index of the first item and the index of the last item.
- 18th June 1958An 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 June 1958Which of RAM and ROM is volatile, meaning its contents are lost when the power is removed?
- 20th June 1958Which piece of UK legislation controls how organisations must store and use people's personal data?
- 21st June 1958Given x = 5 and y = 8, state whether x < y AND x > 0 evaluates to True or False.
- 22nd June 1958A 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 June 1958Give one reason why RAM on its own is not enough, and a computer also needs secondary storage.
- 24th June 1958State the difference between HTTP and HTTPS, and give one situation where HTTPS is essential.
- 25th June 1958A password field requires between 6 and 12 characters. State two boundary data values that should be used to test this field.
- 26th June 1958A 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 June 1958State one function carried out by the operating system of a computer.
- 28th June 1958In computational thinking, what is meant by the term 'decomposition'?
- 29th June 1958Given A = 1 and B = 1, state the value of A AND B.
- 30th June 1958Convert the 8-bit binary number 01011010 to denary.