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Daily Practice · GCSE Computer Science

July 1971 5-a-day

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July 1971

31 sheets · 155 questions · GCSE

July 1971 compilationAll answers

Every sheet in July 1971

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 1971Complete: NOT 0 = ?
  2. 2nd July 1971State how many different values can be represented using 5 bits, and explain your reasoning.
  3. 3rd July 1971State what LAN stands for.
  4. 4th July 1971Explain the purpose of a breakpoint.
  5. 5th July 1971An 8-bit register stores the value 01100000 (denary 96). State the resulting 8-bit binary value after a left shift by 1 place, and state whether an overflow occurs.
  6. 6th July 1971Which CPU register holds the address of the next instruction to be fetched?
  7. 7th July 1971Distinguish between the network security threats known as phishing and pharming.
  8. 8th July 1971Explain why a running maximum should be initialised to the first element of the array rather than to 0.
  9. 9th July 1971A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
  10. 10th July 1971A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
  11. 11th July 1971A 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.
  12. 12th July 1971State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.
  13. 13th July 1971State the key difference between a procedure and a function.
  14. 14th July 1971Give one example of an optical secondary storage device.
  15. 15th July 1971Name the four layers of the TCP/IP model in order from the one closest to the user.
  16. 16th July 1971State the term used for realistic data that a program would be expected to handle during normal use.
  17. 17th July 1971Give one advantage of a relational database over a flat-file database.
  18. 18th July 1971State the difference between lossy and lossless compression.
  19. 19th July 1971State the condition that must be met before a binary search can be used on an array.
  20. 20th July 1971A 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.
  21. 21st July 1971Convert the hexadecimal number 3F to denary.
  22. 22nd July 1971Which piece of network hardware connects a LAN to another network such as the internet, directing data packets based on IP address?
  23. 23rd July 1971A 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.
  24. 24th July 1971Convert the denary number 45 to hexadecimal.
  25. 25th July 1971What does the acronym CPU stand for?
  26. 26th July 1971State what the term malware means.
  27. 27th July 1971An array named temps holds 12 values. State the index of the first item and the index of the last item.
  28. 28th July 1971An 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).
  29. 29th July 1971Which of RAM and ROM is volatile, meaning its contents are lost when the power is removed?
  30. 30th July 1971Which piece of UK legislation controls how organisations must store and use people's personal data?
  31. 31st July 1971Given x = 5 and y = 8, state whether x < y AND x > 0 evaluates to True or False.