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Daily Practice · GCSE Computer Science

August 1957 5-a-day

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August 1957

31 sheets · 155 questions · GCSE

August 1957 compilationAll answers

Every sheet in August 1957

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

  1. 1st August 1957State one reason a small business might choose to use open source software instead of proprietary (closed source) software.
  2. 2nd August 1957A FOR loop runs: total = 0, FOR i = 1 TO 4, total = total + i, NEXT i. State the value of total after the loop finishes.
  3. 3rd August 1957State the pseudocode operator commonly used to join (concatenate) two strings, then show how it joins 'Rev' and 'ision' to produce 'Revision'.
  4. 4th August 1957State the typical maximum capacity of a single-layer DVD.
  5. 5th August 1957A 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?
  6. 6th August 1957State what is meant by a syntax error.
  7. 7th August 1957Define the term 'primary key' as used in a database table.
  8. 8th August 1957What type of utility software reorganises files on a hard disk so fragmented parts are stored closer together?
  9. 9th August 1957Calculate the maximum number of comparisons required by a binary search on a sorted list of 512 items.
  10. 10th August 1957Given P = 0 and Q = 1, state the value of P OR Q.
  11. 11th August 1957Convert the 8-bit binary number 10110100 directly to hexadecimal by splitting it into nibbles.
  12. 12th August 1957A 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.
  13. 13th August 1957Name the translator used for assembly language and describe how it differs from a compiler.
  14. 14th August 1957Convert the 4-bit binary number 1101 to denary.
  15. 15th August 1957Two 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.
  16. 16th August 1957State why an organisation might employ penetration testers to test its network.
  17. 17th August 1957Explain what happens if a program tries to read index 5 of an array declared with 5 elements.
  18. 18th August 1957State one example of a file format that commonly uses lossy compression.
  19. 19th August 1957State how many bits are in one byte, and how many bytes are in one kibibyte (KiB).
  20. 20th August 1957State whether the source code of proprietary (closed source) software is normally available for the public to view.
  21. 21st August 1957Write one line of pseudocode that converts the string stored in heightInput into a real number and stores it in a variable called height.
  22. 22nd August 1957A 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.
  23. 23rd August 1957Order these units of data from smallest to largest: megabyte, byte, gigabyte, kilobyte.
  24. 24th August 1957Define the term protocol.
  25. 25th August 1957Give one example of erroneous test data for a field that only accepts whole numbers from 1 to 10.
  26. 26th August 1957A 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;
  27. 27th August 1957Each 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.
  28. 28th August 1957Which flowchart symbol shape is used to represent a decision point (e.g. a yes/no branch)?
  29. 29th August 1957State the two values a Boolean data type can hold.
  30. 30th August 1957Convert the 8-bit binary number 01011010 to denary.
  31. 31st August 1957Calculate the number of cables needed to connect 8 computers in a full mesh topology, where every computer connects directly to every other computer.