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Daily Practice · GCSE Computer Science

April 1980 5-a-day

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April 1980

30 sheets · 150 questions · GCSE

April 1980 compilationAll answers

Every sheet in April 1980

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

  1. 1st April 1980Which CPU register holds the address of the next instruction to be fetched?
  2. 2nd April 1980Distinguish between the network security threats known as phishing and pharming.
  3. 3rd April 1980Explain why a running maximum should be initialised to the first element of the array rather than to 0.
  4. 4th April 1980A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
  5. 5th April 1980A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
  6. 6th April 1980A 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.
  7. 7th April 1980State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.
  8. 8th April 1980State the key difference between a procedure and a function.
  9. 9th April 1980Give one example of an optical secondary storage device.
  10. 10th April 1980Name the four layers of the TCP/IP model in order from the one closest to the user.
  11. 11th April 1980State the term used for realistic data that a program would be expected to handle during normal use.
  12. 12th April 1980Give one advantage of a relational database over a flat-file database.
  13. 13th April 1980State the difference between lossy and lossless compression.
  14. 14th April 1980State the condition that must be met before a binary search can be used on an array.
  15. 15th April 1980A 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.
  16. 16th April 1980Convert the hexadecimal number 3F to denary.
  17. 17th April 1980Which piece of network hardware connects a LAN to another network such as the internet, directing data packets based on IP address?
  18. 18th April 1980A program compiles and runs but always outputs an average that is too small. State the type of error and explain why the translator did not report it.
  19. 19th April 1980Convert the denary number 45 to hexadecimal.
  20. 20th April 1980What does the acronym CPU stand for?
  21. 21st April 1980State what the term malware means.
  22. 22nd April 1980An array named temps holds 12 values. State the index of the first item and the index of the last item.
  23. 23rd April 1980An 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).
  24. 24th April 1980Which of RAM and ROM is volatile, meaning its contents are lost when the power is removed?
  25. 25th April 1980Which piece of UK legislation controls how organisations must store and use people's personal data?
  26. 26th April 1980Given x = 5 and y = 8, state whether x < y AND x > 0 evaluates to True or False.
  27. 27th April 1980A programmer wants any syntax error in their program to be reported before the program starts running at all. State whether a compiler or an interpreter behaves this way, and explain why.
  28. 28th April 1980Give one reason why RAM on its own is not enough, and a computer also needs secondary storage.
  29. 29th April 1980State the difference between HTTP and HTTPS, and give one situation where HTTPS is essential.
  30. 30th April 1980A password field requires between 6 and 12 characters. State two boundary data values that should be used to test this field.