Daily Practice · GCSE Computer Science
November 2023 - GCSE Computer Science 5-a-day
Every GCSE Computer Science sheet published in November 2023, with answers. Systems, data representation, networks, algorithms and programming.
Every sheet in November 2023
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st November 2023Calculate the number of cables needed to connect 8 computers in a full mesh topology, where every computer connects directly to every other computer.
- 2nd November 2023Give one advantage and one disadvantage of using a compiler.
- 3rd November 2023Convert the hexadecimal number 1A to denary.
- 4th November 2023Convert the denary number 156 to an 8 bit binary number.
- 5th November 2023Which type of malware can replicate itself and spread across a network without attaching to another program or needing a user to run it?
- 6th November 2023Write a loop in pseudocode that outputs every element of a 1D array named names of length 6.
- 7th November 2023An image uses a colour depth of 2 bits per pixel. Calculate the maximum number of different colours it can represent.
- 8th November 2023A CPU's cache has a hit rate of 80%. During a task the CPU makes 4000 requests for data. Calculate the number of cache hits and cache misses.
- 9th November 2023Describe two negative consequences of throwing away old computer hardware instead of recycling it.
- 10th November 2023Write a function called isEven that takes one integer parameter, num, and returns True if num is even and False otherwise.
- 11th November 2023Write the pseudocode header and body for a function called isAdult that takes one integer parameter called age and returns True if age is 18 or over.
- 12th November 2023A company backs up its files onto magnetic tape cartridges, each with a capacity of 3 TB. The company needs to back up 20 TB of data. Calculate the minimum number of cartridges needed.
- 13th November 2023A 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?
- 14th November 2023Explain why iterative testing, carried out throughout development, tends to make errors cheaper to fix than relying only on final testing.
- 15th November 2023State what a foreign key is used for.
- 16th November 2023Define the term 'interrupt' as used to describe a signal received by a CPU.
- 17th November 2023An array called items contains [12, 45, 7, 30, 19] at indices 0 to 4. Describe how a linear search would locate the value 30, stating the number of comparisons needed.
- 18th November 2023Evaluate X = NOT A AND B when A = 0 and B = 1.
- 19th November 2023A pseudocode algorithm is: count <- 0, x <- 10, WHILE x > 0, count <- count + 1, x <- x - 3, ENDWHILE, OUTPUT count. Complete a trace table for x and count, laid out as x | count, then state the value output.
- 20th November 2023Give one advantage of a star topology compared with a mesh topology.
- 21st November 2023Name the translator used for assembly language and describe how it differs from a compiler.
- 22nd November 2023Add the 8-bit binary numbers 00101101 and 00010011, giving your answer as an 8-bit binary number.
- 23rd November 2023State the three stages of the fetch-decode-execute cycle in the order they occur.
- 24th November 2023State one weakness of a simple shift cipher compared to modern encryption methods used on networks.
- 25th November 2023Explain what happens if a program tries to read index 5 of an array declared with 5 elements.
- 26th November 2023Define the term 'pixel'.
- 27th November 2023Order these from fastest access speed to slowest: RAM, cache, registers, secondary storage.
- 28th November 2023Which piece of UK legislation makes it a criminal offence to gain unauthorised access to a computer system?
- 29th November 2023Evaluate the expression 23 DIV 4.
- 30th November 2023State the value returned by LENGTH(word) if word stores the string 'Computer'.