Daily Practice · GCSE Computer Science
September 2024 - GCSE Computer Science 5-a-day
Every GCSE Computer Science sheet published in September 2024, with answers. Systems, data representation, networks, algorithms and programming.
Every sheet in September 2024
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st September 2024Explain the purpose of a breakpoint.
- 2nd September 2024Convert the denary number 5 to a 4-bit binary number.
- 3rd September 2024A CPU has a clock speed of 4.0 GHz. Calculate how many clock cycles it completes in 2 seconds.
- 4th September 2024A simple cipher shifts every letter 2 places forward in the alphabet, wrapping around so Y becomes A and Z becomes B. Encrypt the plaintext CAT using this cipher.
- 5th September 2024Explain why a running maximum should be initialised to the first element of the array rather than to 0.
- 6th September 2024A mono sound clip has a sample rate of 4000 Hz and lasts 2 seconds. Calculate the total number of samples taken.
- 7th September 2024State the type of program that is typically stored in ROM.
- 8th September 2024State one reason a small business might choose to use open source software instead of proprietary (closed source) software.
- 9th September 2024A FOR loop runs: total = 0, FOR i = 1 TO 4, total = total + i, NEXT i. State the value of total after the loop finishes.
- 10th September 2024Write 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.
- 11th September 2024State the typical maximum capacity of a single-layer DVD.
- 12th September 2024Name the four layers of the TCP/IP model in order from the one closest to the user.
- 13th September 2024State what is meant by a syntax error.
- 14th September 2024State what a foreign key is used for.
- 15th September 2024What type of utility software reorganises files on a hard disk so fragmented parts are stored closer together?
- 16th September 2024Calculate the maximum number of comparisons required by a binary search on a sorted list of 512 items.
- 17th September 2024Given P = 0 and Q = 1, state the value of P OR Q.
- 18th September 2024A 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.
- 19th September 2024A 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.
- 20th September 2024A 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.
- 21st September 2024Convert the 4-bit binary number 1101 to denary.
- 22nd September 2024Two 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.
- 23rd September 2024State why an organisation might employ penetration testers to test its network.
- 24th September 2024An array named temps holds 12 values. State the index of the first item and the index of the last item.
- 25th September 2024State one example of a file format that commonly uses lossy compression.
- 26th September 2024State how many bits are in one byte, and how many bytes are in one kibibyte (KiB).
- 27th September 2024State whether the source code of proprietary (closed source) software is normally available for the public to view.
- 28th September 2024Write one line of pseudocode that converts the string stored in heightInput into a real number and stores it in a variable called height.
- 29th September 2024State the value returned by LENGTH(word) if word stores the string 'Computer'.
- 30th September 2024Order these units of data from smallest to largest: megabyte, byte, gigabyte, kilobyte.