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Daily Practice · GCSE Computer Science

January 1970 5-a-day

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January 1970

31 sheets · 155 questions · GCSE

January 1970 compilationAll answers

Every sheet in January 1970

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 1970What does the acronym CPU stand for?
  2. 2nd January 1970State what the term malware means.
  3. 3rd January 1970Explain what happens if a program tries to read index 5 of an array declared with 5 elements.
  4. 4th January 1970An 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).
  5. 5th January 1970Which of RAM and ROM is volatile, meaning its contents are lost when the power is removed?
  6. 6th January 1970Which piece of UK legislation controls how organisations must store and use people's personal data?
  7. 7th January 1970Given x = 5 and y = 8, state whether x < y AND x > 0 evaluates to True or False.
  8. 8th January 1970State the correct order of the three operations used to read data from a text file.
  9. 9th January 1970Give one reason why RAM on its own is not enough, and a computer also needs secondary storage.
  10. 10th January 1970Define the term protocol.
  11. 11th January 1970A password field requires between 6 and 12 characters. State two boundary data values that should be used to test this field.
  12. 12th January 1970A 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.
  13. 13th January 1970State one function carried out by the operating system of a computer.
  14. 14th January 1970In computational thinking, what is meant by the term 'decomposition'?
  15. 15th January 1970Given A = 1 and B = 1, state the value of A AND B.
  16. 16th January 1970Convert the denary number 200 to hexadecimal, showing your working.
  17. 17th January 1970Define a peer-to-peer network.
  18. 18th January 1970Explain the purpose of a breakpoint.
  19. 19th January 1970Convert the denary number 5 to a 4-bit binary number.
  20. 20th January 1970A CPU has a clock speed of 4.0 GHz. Calculate how many clock cycles it completes in 2 seconds.
  21. 21st January 1970A 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.
  22. 22nd January 1970Explain why a running maximum should be initialised to the first element of the array rather than to 0.
  23. 23rd January 1970A mono sound clip has a sample rate of 4000 Hz and lasts 2 seconds. Calculate the total number of samples taken.
  24. 24th January 1970State the type of program that is typically stored in ROM.
  25. 25th January 1970State one reason a small business might choose to use open source software instead of proprietary (closed source) software.
  26. 26th January 1970A FOR loop runs: total = 0, FOR i = 1 TO 4, total = total + i, NEXT i. State the value of total after the loop finishes.
  27. 27th January 1970State the pseudocode operator commonly used to join (concatenate) two strings, then show how it joins 'Rev' and 'ision' to produce 'Revision'.
  28. 28th January 1970State the typical maximum capacity of a single-layer DVD.
  29. 29th January 1970Name the four layers of the TCP/IP model in order from the one closest to the user.
  30. 30th January 1970State what is meant by a syntax error.
  31. 31st January 1970Define the term 'primary key' as used in a database table.