Daily Practice · GCSE Computer Science
August 2022 - GCSE Computer Science 5-a-day
Every GCSE Computer Science sheet published in August 2022, with answers. Systems, data representation, networks, algorithms and programming.
Every sheet in August 2022
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st August 2022Convert the 8-bit binary number 01011010 to denary.
- 2nd August 2022Calculate the number of cables needed to connect 8 computers in a full mesh topology, where every computer connects directly to every other computer.
- 3rd August 2022State why a program written in a high level language must be translated.
- 4th August 2022Convert the hexadecimal number 1A to denary.
- 5th August 2022Convert the denary number 156 to an 8 bit binary number.
- 6th August 2022Which type of malware can replicate itself and spread across a network without attaching to another program or needing a user to run it?
- 7th August 2022Describe what a nested loop does when it processes a 2D array.
- 8th August 2022An image uses a colour depth of 2 bits per pixel. Calculate the maximum number of different colours it can represent.
- 9th August 2022A 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.
- 10th August 2022Describe two negative consequences of throwing away old computer hardware instead of recycling it.
- 11th August 2022Write a function called isEven that takes one integer parameter, num, and returns True if num is even and False otherwise.
- 12th August 2022Write 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.
- 13th August 2022A 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.
- 14th August 2022Give two reasons why network communication is divided into layers.
- 15th August 2022Explain why iterative testing, carried out throughout development, tends to make errors cheaper to fix than relying only on final testing.
- 16th August 2022State what a foreign key is used for.
- 17th August 2022Define the term 'interrupt' as used to describe a signal received by a CPU.
- 18th August 2022An 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.
- 19th August 2022Evaluate X = NOT A AND B when A = 0 and B = 1.
- 20th August 2022A 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.
- 21st August 2022Give one advantage of a star topology compared with a mesh topology.
- 22nd August 2022Explain why an interpreter is often preferred while a program is being written.
- 23rd August 2022Add the 8-bit binary numbers 00101101 and 00010011, giving your answer as an 8-bit binary number.
- 24th August 2022State the three stages of the fetch-decode-execute cycle in the order they occur.
- 25th August 2022State one weakness of a simple shift cipher compared to modern encryption methods used on networks.
- 26th August 2022A 2D array grid is declared as grid[4][6]. State how many rows and columns it has and how many elements it holds in total.
- 27th August 2022Define the term 'pixel'.
- 28th August 2022Order these from fastest access speed to slowest: RAM, cache, registers, secondary storage.
- 29th August 2022Which piece of UK legislation makes it a criminal offence to gain unauthorised access to a computer system?
- 30th August 2022Evaluate the expression 23 DIV 4.
- 31st August 2022State the value returned by LENGTH(word) if word stores the string 'Computer'.