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Daily Practice · GCSE Computer Science

July 1997 - GCSE Computer Science 5-a-day

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July 1997

31 sheets · 155 questions · GCSE

July 1997 compilationAll answers

Every sheet in July 1997

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

  1. 1st July 1997A 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 July 1997State one function carried out by the operating system of a computer.
  3. 3rd July 1997In computational thinking, what is meant by the term 'decomposition'?
  4. 4th July 1997Given A = 1 and B = 1, state the value of A AND B.
  5. 5th July 1997Convert the denary number 200 to hexadecimal, showing your working.
  6. 6th July 1997Define a peer-to-peer network.
  7. 7th July 1997Explain why an interpreter is often preferred while a program is being written.
  8. 8th July 1997Convert the denary number 5 to a 4-bit binary number.
  9. 9th July 1997A CPU has a clock speed of 4.0 GHz. Calculate how many clock cycles it completes in 2 seconds.
  10. 10th July 1997A 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 July 1997A 2D array grid is declared as grid[4][6]. State how many rows and columns it has and how many elements it holds in total.
  12. 12th July 1997A mono sound clip has a sample rate of 4000 Hz and lasts 2 seconds. Calculate the total number of samples taken.
  13. 13th July 1997State the type of program that is typically stored in ROM.
  14. 14th July 1997State one reason a small business might choose to use open source software instead of proprietary (closed source) software.
  15. 15th July 1997A 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 July 1997State the pseudocode operator commonly used to join (concatenate) two strings, then show how it joins 'Rev' and 'ision' to produce 'Revision'.
  17. 17th July 1997State the typical maximum capacity of a single-layer DVD.
  18. 18th July 1997State the layer that IP operates in, and describe its job.
  19. 19th July 1997State what is meant by a syntax error.
  20. 20th July 1997Define the term 'primary key' as used in a database table.
  21. 21st July 1997What type of utility software reorganises files on a hard disk so fragmented parts are stored closer together?
  22. 22nd July 1997Calculate the maximum number of comparisons required by a binary search on a sorted list of 512 items.
  23. 23rd July 1997Given P = 0 and Q = 1, state the value of P OR Q.
  24. 24th July 1997Convert the 8-bit binary number 10110100 directly to hexadecimal by splitting it into nibbles.
  25. 25th July 1997A 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 July 1997Describe what syntax highlighting is and how it helps a programmer.
  27. 27th July 1997Convert the 4-bit binary number 1101 to denary.
  28. 28th July 1997Two 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 July 1997State why an organisation might employ penetration testers to test its network.
  30. 30th July 1997Trace 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).
  31. 31st July 1997State one example of a file format that commonly uses lossy compression.