Revision Library
/Subjects/Computer Science/Daily Practice
Daily Practice · GCSE Computer Science

October 1993 - GCSE Computer Science 5-a-day

← Today's GCSE Computer Science sheet

October 1993

31 sheets · 155 questions · GCSE

October 1993 compilationAll answers

Every sheet in October 1993

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 1993A password field requires between 6 and 12 characters. State two boundary data values that should be used to test this field.
  2. 2nd October 1993A table called products has fields productId, name, price and stock. Write an SQL statement that changes the price of the product with productId 7 to 15.99.
  3. 3rd October 1993State one function carried out by the operating system of a computer.
  4. 4th October 1993In computational thinking, what is meant by the term 'decomposition'?
  5. 5th October 1993Given A = 1 and B = 1, state the value of A AND B.
  6. 6th October 1993Convert the denary number 200 to hexadecimal, showing your working.
  7. 7th October 1993Define a peer-to-peer network.
  8. 8th October 1993A 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.
  9. 9th October 1993Convert the denary number 5 to a 4-bit binary number.
  10. 10th October 1993A CPU has a clock speed of 4.0 GHz. Calculate how many clock cycles it completes in 2 seconds.
  11. 11th October 1993A 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.
  12. 12th October 1993An array named temps holds 12 values. State the index of the first item and the index of the last item.
  13. 13th October 1993A mono sound clip has a sample rate of 4000 Hz and lasts 2 seconds. Calculate the total number of samples taken.
  14. 14th October 1993State the type of program that is typically stored in ROM.
  15. 15th October 1993State one reason a small business might choose to use open source software instead of proprietary (closed source) software.
  16. 16th October 1993A FOR loop runs: total = 0, FOR i = 1 TO 4, total = total + i, NEXT i. State the value of total after the loop finishes.
  17. 17th October 1993State the pseudocode operator commonly used to join (concatenate) two strings, then show how it joins 'Rev' and 'ision' to produce 'Revision'.
  18. 18th October 1993State the typical maximum capacity of a single-layer DVD.
  19. 19th October 1993State the difference between HTTP and HTTPS, and give one situation where HTTPS is essential.
  20. 20th October 1993State what is meant by a syntax error.
  21. 21st October 1993Define the term 'primary key' as used in a database table.
  22. 22nd October 1993What type of utility software reorganises files on a hard disk so fragmented parts are stored closer together?
  23. 23rd October 1993Calculate the maximum number of comparisons required by a binary search on a sorted list of 512 items.
  24. 24th October 1993Given P = 0 and Q = 1, state the value of P OR Q.
  25. 25th October 1993Convert the 8-bit binary number 10110100 directly to hexadecimal by splitting it into nibbles.
  26. 26th October 1993A 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.
  27. 27th October 1993State why a program written in a high level language must be translated.
  28. 28th October 1993Convert the 4-bit binary number 1101 to denary.
  29. 29th October 1993Two 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.
  30. 30th October 1993State why an organisation might employ penetration testers to test its network.
  31. 31st October 1993Describe what a nested loop does when it processes a 2D array.