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

January 1995 - GCSE Computer Science 5-a-day

← Today's GCSE Computer Science sheet

January 1995

31 sheets · 155 questions · GCSE

January 1995 compilationAll answers

Every sheet in January 1995

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

  1. 1st January 1995A 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.
  2. 2nd January 1995State one function carried out by the operating system of a computer.
  3. 3rd January 1995In computational thinking, what is meant by the term 'decomposition'?
  4. 4th January 1995Given A = 1 and B = 1, state the value of A AND B.
  5. 5th January 1995Convert the denary number 200 to hexadecimal, showing your working.
  6. 6th January 1995Define a peer-to-peer network.
  7. 7th January 1995Describe what syntax highlighting is and how it helps a programmer.
  8. 8th January 1995Convert the denary number 5 to a 4-bit binary number.
  9. 9th January 1995A CPU has a clock speed of 4.0 GHz. Calculate how many clock cycles it completes in 2 seconds.
  10. 10th January 1995A 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.
  11. 11th January 1995Trace 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).
  12. 12th January 1995A mono sound clip has a sample rate of 4000 Hz and lasts 2 seconds. Calculate the total number of samples taken.
  13. 13th January 1995State the type of program that is typically stored in ROM.
  14. 14th January 1995State one reason a small business might choose to use open source software instead of proprietary (closed source) software.
  15. 15th January 1995A FOR loop runs: total = 0, FOR i = 1 TO 4, total = total + i, NEXT i. State the value of total after the loop finishes.
  16. 16th January 1995State the pseudocode operator commonly used to join (concatenate) two strings, then show how it joins 'Rev' and 'ision' to produce 'Revision'.
  17. 17th January 1995State the typical maximum capacity of a single-layer DVD.
  18. 18th January 1995Explain the role of TCP when a large file is downloaded.
  19. 19th January 1995State what is meant by a syntax error.
  20. 20th January 1995Define the term 'primary key' as used in a database table.
  21. 21st January 1995What type of utility software reorganises files on a hard disk so fragmented parts are stored closer together?
  22. 22nd January 1995Calculate the maximum number of comparisons required by a binary search on a sorted list of 512 items.
  23. 23rd January 1995Given P = 0 and Q = 1, state the value of P OR Q.
  24. 24th January 1995Convert the 8-bit binary number 10110100 directly to hexadecimal by splitting it into nibbles.
  25. 25th January 1995A 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.
  26. 26th January 1995Give one advantage and one disadvantage of using a compiler.
  27. 27th January 1995Convert the 4-bit binary number 1101 to denary.
  28. 28th January 1995Two 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.
  29. 29th January 1995State why an organisation might employ penetration testers to test its network.
  30. 30th January 1995Write a loop in pseudocode that outputs every element of a 1D array named names of length 6.
  31. 31st January 1995State one example of a file format that commonly uses lossy compression.