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Daily Practice · GCSE Computer Science

October 2023 - GCSE Computer Science 5-a-day

Every GCSE Computer Science sheet published in October 2023, with answers. Systems, data representation, networks, algorithms and programming.

← Today's GCSE Computer Science sheet

October 2023

31 sheets · 155 questions · GCSE

October 2023 compilationAll answers

Every sheet in October 2023

The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.

  1. 1st October 2023State the type of program that is typically stored in ROM.
  2. 2nd October 2023State one reason a small business might choose to use open source software instead of proprietary (closed source) software.
  3. 3rd October 2023A FOR loop runs: total = 0, FOR i = 1 TO 4, total = total + i, NEXT i. State the value of total after the loop finishes.
  4. 4th October 2023State the pseudocode operator commonly used to join (concatenate) two strings, then show how it joins 'Rev' and 'ision' to produce 'Revision'.
  5. 5th October 2023State the typical maximum capacity of a single-layer DVD.
  6. 6th October 2023State the layer that IP operates in, and describe its job.
  7. 7th October 2023State what is meant by a syntax error.
  8. 8th October 2023Define the term 'primary key' as used in a database table.
  9. 9th October 2023What type of utility software reorganises files on a hard disk so fragmented parts are stored closer together?
  10. 10th October 2023Calculate the maximum number of comparisons required by a binary search on a sorted list of 512 items.
  11. 11th October 2023Given P = 0 and Q = 1, state the value of P OR Q.
  12. 12th October 2023Convert the 8-bit binary number 10110100 directly to hexadecimal by splitting it into nibbles.
  13. 13th October 2023A 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.
  14. 14th October 2023Describe what syntax highlighting is and how it helps a programmer.
  15. 15th October 2023Convert the 4-bit binary number 1101 to denary.
  16. 16th October 2023Two 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.
  17. 17th October 2023State why an organisation might employ penetration testers to test its network.
  18. 18th October 2023Trace this algorithm with data = [4, 9, 2, 9, 7] and state the final output. total = 0; count = 0; for i = 0 to 4: if data[i] > 5 then total = total + data[i] and count = count + 1; next i; print(total, count).
  19. 19th October 2023State one example of a file format that commonly uses lossy compression.
  20. 20th October 2023State how many bits are in one byte, and how many bytes are in one kibibyte (KiB).
  21. 21st October 2023State whether the source code of proprietary (closed source) software is normally available for the public to view.
  22. 22nd October 2023Write one line of pseudocode that converts the string stored in heightInput into a real number and stores it in a variable called height.
  23. 23rd October 2023A 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.
  24. 24th October 2023Order these units of data from smallest to largest: megabyte, byte, gigabyte, kilobyte.
  25. 25th October 2023Explain the role of TCP when a large file is downloaded.
  26. 26th October 2023Give one example of erroneous test data for a field that only accepts whole numbers from 1 to 10.
  27. 27th October 2023A 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;
  28. 28th October 2023Each pair from the previous question is stored using 2 bytes. Calculate the compression ratio achieved, given the uncompressed row (1 byte per pixel) uses 8 bytes.
  29. 29th October 2023Which flowchart symbol shape is used to represent a decision point (e.g. a yes/no branch)?
  30. 30th October 2023State the two values a Boolean data type can hold.
  31. 31st October 2023Convert the 8-bit binary number 01011010 to denary.