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Daily Practice · GCSE Computer Science

August 1955 5-a-day

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August 1955

31 sheets · 155 questions · GCSE

August 1955 compilationAll answers

Every sheet in August 1955

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

  1. 1st August 1955Convert the 8-bit binary number 01011010 to denary.
  2. 2nd August 1955State what LAN stands for.
  3. 3rd August 1955State why a program written in a high level language must be translated.
  4. 4th August 1955An 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.
  5. 5th August 1955Which CPU register holds the address of the next instruction to be fetched?
  6. 6th August 1955Distinguish between the network security threats known as phishing and pharming.
  7. 7th August 1955Describe what a nested loop does when it processes a 2D array.
  8. 8th August 1955A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
  9. 9th August 1955A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
  10. 10th August 1955A 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.
  11. 11th August 1955State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.
  12. 12th August 1955Write 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.
  13. 13th August 1955Give one example of an optical secondary storage device.
  14. 14th August 1955Give two reasons why network communication is divided into layers.
  15. 15th August 1955State the term used for realistic data that a program would be expected to handle during normal use.
  16. 16th August 1955State what a foreign key is used for.
  17. 17th August 1955State the difference between lossy and lossless compression.
  18. 18th August 1955State the condition that must be met before a binary search can be used on an array.
  19. 19th August 1955A 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.
  20. 20th August 1955A 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.
  21. 21st August 1955Which piece of network hardware connects a LAN to another network such as the internet, directing data packets based on IP address?
  22. 22nd August 1955Explain why an interpreter is often preferred while a program is being written.
  23. 23rd August 1955Convert the denary number 45 to hexadecimal.
  24. 24th August 1955What does the acronym CPU stand for?
  25. 25th August 1955State what the term malware means.
  26. 26th August 1955A 2D array grid is declared as grid[4][6]. State how many rows and columns it has and how many elements it holds in total.
  27. 27th August 1955An 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).
  28. 28th August 1955Which of RAM and ROM is volatile, meaning its contents are lost when the power is removed?
  29. 29th August 1955Which piece of UK legislation controls how organisations must store and use people's personal data?
  30. 30th August 1955Given x = 5 and y = 8, state whether x < y AND x > 0 evaluates to True or False.
  31. 31st August 1955State the value returned by LENGTH(word) if word stores the string 'Computer'.