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Daily Practice · GCSE Computer Science

February 1963 5-a-day

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February 1963

28 sheets · 140 questions · GCSE

February 1963 compilationAll answers

Every sheet in February 1963

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

  1. 1st February 1963Distinguish between the network security threats known as phishing and pharming.
  2. 2nd February 1963Explain what happens if a program tries to read index 5 of an array declared with 5 elements.
  3. 3rd February 1963A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
  4. 4th February 1963A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
  5. 5th February 1963A streaming company records which shows each user watches and uses this to recommend similar shows. Explain one ethical concern this could raise, even if the company only uses the data to improve recommendations.
  6. 6th February 1963State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.
  7. 7th February 1963Write the pseudocode header and body for a function called isAdult that takes one integer parameter called age and returns True if age is 18 or over.
  8. 8th February 1963Give one example of an optical secondary storage device.
  9. 9th February 1963Define the term protocol.
  10. 10th February 1963State the term used for realistic data that a program would be expected to handle during normal use.
  11. 11th February 1963State what a foreign key is used for.
  12. 12th February 1963State the difference between lossy and lossless compression.
  13. 13th February 1963State the condition that must be met before a binary search can be used on an array.
  14. 14th February 1963A logic circuit has inputs C and D. C feeds into a NOT gate; the output of the NOT gate and D feed into an OR gate, giving output Y. Write the Boolean expression for Y and state its value when C = 1 and D = 0.
  15. 15th February 1963A pseudocode algorithm is: count <- 0, x <- 10, WHILE x > 0, count <- count + 1, x <- x - 3, ENDWHILE, OUTPUT count. Complete a trace table for x and count, laid out as x | count, then state the value output.
  16. 16th February 1963Which piece of network hardware connects a LAN to another network such as the internet, directing data packets based on IP address?
  17. 17th February 1963Explain the purpose of a breakpoint.
  18. 18th February 1963Convert the denary number 45 to hexadecimal.
  19. 19th February 1963What does the acronym CPU stand for?
  20. 20th February 1963State what the term malware means.
  21. 21st February 1963Explain why a running maximum should be initialised to the first element of the array rather than to 0.
  22. 22nd February 1963An 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).
  23. 23rd February 1963Which of RAM and ROM is volatile, meaning its contents are lost when the power is removed?
  24. 24th February 1963Which piece of UK legislation controls how organisations must store and use people's personal data?
  25. 25th February 1963Given x = 5 and y = 8, state whether x < y AND x > 0 evaluates to True or False.
  26. 26th February 1963State the value returned by LENGTH(word) if word stores the string 'Computer'.
  27. 27th February 1963Give one reason why RAM on its own is not enough, and a computer also needs secondary storage.
  28. 28th February 1963Name the four layers of the TCP/IP model in order from the one closest to the user.