Daily Practice · GCSE Computer Science
March 2022 - GCSE Computer Science 5-a-day
Every GCSE Computer Science sheet published in March 2022, with answers. Systems, data representation, networks, algorithms and programming.
Every sheet in March 2022
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st March 2022Given A = 1 and B = 1, state the value of A AND B.
- 2nd March 2022Convert the 8-bit binary number 01011010 to denary.
- 3rd March 2022Define a peer-to-peer network.
- 4th March 2022A 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.
- 5th March 2022Convert the denary number 5 to a 4-bit binary number.
- 6th March 2022A CPU has a clock speed of 4.0 GHz. Calculate how many clock cycles it completes in 2 seconds.
- 7th March 2022A 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.
- 8th March 2022An array named temps holds 12 values. State the index of the first item and the index of the last item.
- 9th March 2022A mono sound clip has a sample rate of 4000 Hz and lasts 2 seconds. Calculate the total number of samples taken.
- 10th March 2022State the type of program that is typically stored in ROM.
- 11th March 2022State one reason a small business might choose to use open source software instead of proprietary (closed source) software.
- 12th March 2022A FOR loop runs: total = 0, FOR i = 1 TO 4, total = total + i, NEXT i. State the value of total after the loop finishes.
- 13th March 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.
- 14th March 2022State the typical maximum capacity of a single-layer DVD.
- 15th March 2022State the difference between HTTP and HTTPS, and give one situation where HTTPS is essential.
- 16th March 2022State what is meant by a syntax error.
- 17th March 2022State what a foreign key is used for.
- 18th March 2022What type of utility software reorganises files on a hard disk so fragmented parts are stored closer together?
- 19th March 2022Calculate the maximum number of comparisons required by a binary search on a sorted list of 512 items.
- 20th March 2022Given P = 0 and Q = 1, state the value of P OR Q.
- 21st March 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.
- 22nd March 2022A 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.
- 23rd March 2022State why a program written in a high level language must be translated.
- 24th March 2022Convert the 4-bit binary number 1101 to denary.
- 25th March 2022Two 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.
- 26th March 2022State why an organisation might employ penetration testers to test its network.
- 27th March 2022Describe what a nested loop does when it processes a 2D array.
- 28th March 2022State one example of a file format that commonly uses lossy compression.
- 29th March 2022State how many bits are in one byte, and how many bytes are in one kibibyte (KiB).
- 30th March 2022State whether the source code of proprietary (closed source) software is normally available for the public to view.
- 31st March 2022Write one line of pseudocode that converts the string stored in heightInput into a real number and stores it in a variable called height.