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Daily Practice · GCSE Computer Science

October 1978 5-a-day

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October 1978

31 sheets · 155 questions · GCSE

October 1978 compilationAll answers

Every sheet in October 1978

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 1978An uncompressed file is 6000 KB. After lossless compression it is 1500 KB. Calculate the compression ratio in the form n:1 (original size : compressed size).
  2. 2nd October 1978Which of RAM and ROM is volatile, meaning its contents are lost when the power is removed?
  3. 3rd October 1978Which piece of UK legislation controls how organisations must store and use people's personal data?
  4. 4th October 1978Given x = 5 and y = 8, state whether x < y AND x > 0 evaluates to True or False.
  5. 5th October 1978State the correct order of the three operations used to read data from a text file.
  6. 6th October 1978Give one reason why RAM on its own is not enough, and a computer also needs secondary storage.
  7. 7th October 1978Define the term protocol.
  8. 8th October 1978A password field requires between 6 and 12 characters. State two boundary data values that should be used to test this field.
  9. 9th October 1978A 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.
  10. 10th October 1978State one function carried out by the operating system of a computer.
  11. 11th October 1978In computational thinking, what is meant by the term 'decomposition'?
  12. 12th October 1978Given A = 1 and B = 1, state the value of A AND B.
  13. 13th October 1978Convert the denary number 200 to hexadecimal, showing your working.
  14. 14th October 1978Define a peer-to-peer network.
  15. 15th October 1978Explain the purpose of a breakpoint.
  16. 16th October 1978Convert the denary number 5 to a 4-bit binary number.
  17. 17th October 1978A CPU has a clock speed of 4.0 GHz. Calculate how many clock cycles it completes in 2 seconds.
  18. 18th October 1978A 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.
  19. 19th October 1978Explain why a running maximum should be initialised to the first element of the array rather than to 0.
  20. 20th October 1978A mono sound clip has a sample rate of 4000 Hz and lasts 2 seconds. Calculate the total number of samples taken.
  21. 21st October 1978State the type of program that is typically stored in ROM.
  22. 22nd October 1978State one reason a small business might choose to use open source software instead of proprietary (closed source) software.
  23. 23rd October 1978A FOR loop runs: total = 0, FOR i = 1 TO 4, total = total + i, NEXT i. State the value of total after the loop finishes.
  24. 24th October 1978State the pseudocode operator commonly used to join (concatenate) two strings, then show how it joins 'Rev' and 'ision' to produce 'Revision'.
  25. 25th October 1978State the typical maximum capacity of a single-layer DVD.
  26. 26th October 1978Name the four layers of the TCP/IP model in order from the one closest to the user.
  27. 27th October 1978State what is meant by a syntax error.
  28. 28th October 1978Define the term 'primary key' as used in a database table.
  29. 29th October 1978What type of utility software reorganises files on a hard disk so fragmented parts are stored closer together?
  30. 30th October 1978Calculate the maximum number of comparisons required by a binary search on a sorted list of 512 items.
  31. 31st October 1978Given P = 0 and Q = 1, state the value of P OR Q.