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Daily Practice · GCSE Computer Science

November 2010 - GCSE Computer Science 5-a-day

Every GCSE Computer Science sheet published in November 2010, with answers. Systems, data representation, networks, algorithms and programming.

← Today's GCSE Computer Science sheet

November 2010

30 sheets · 150 questions · GCSE

November 2010 compilationAll answers

Every sheet in November 2010

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

  1. 1st November 2010An 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.
  2. 2nd November 2010Which CPU register holds the address of the next instruction to be fetched?
  3. 3rd November 2010Distinguish between the network security threats known as phishing and pharming.
  4. 4th November 2010Explain why a running maximum should be initialised to the first element of the array rather than to 0.
  5. 5th November 2010A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
  6. 6th November 2010A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
  7. 7th November 2010A 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.
  8. 8th November 2010State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.
  9. 9th November 2010State the pseudocode operator commonly used to join (concatenate) two strings, then show how it joins 'Rev' and 'ision' to produce 'Revision'.
  10. 10th November 2010Give one example of an optical secondary storage device.
  11. 11th November 2010Name the four layers of the TCP/IP model in order from the one closest to the user.
  12. 12th November 2010State the term used for realistic data that a program would be expected to handle during normal use.
  13. 13th November 2010Define the term 'primary key' as used in a database table.
  14. 14th November 2010State the difference between lossy and lossless compression.
  15. 15th November 2010State the condition that must be met before a binary search can be used on an array.
  16. 16th November 2010A 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.
  17. 17th November 2010Convert the 8-bit binary number 10110100 directly to hexadecimal by splitting it into nibbles.
  18. 18th November 2010Which piece of network hardware connects a LAN to another network such as the internet, directing data packets based on IP address?
  19. 19th November 2010A 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.
  20. 20th November 2010Convert the denary number 45 to hexadecimal.
  21. 21st November 2010What does the acronym CPU stand for?
  22. 22nd November 2010State what the term malware means.
  23. 23rd November 2010An array named temps holds 12 values. State the index of the first item and the index of the last item.
  24. 24th November 2010An 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).
  25. 25th November 2010Which of RAM and ROM is volatile, meaning its contents are lost when the power is removed?
  26. 26th November 2010Which piece of UK legislation controls how organisations must store and use people's personal data?
  27. 27th November 2010Given x = 5 and y = 8, state whether x < y AND x > 0 evaluates to True or False.
  28. 28th November 2010A function is defined as: FUNCTION addTax(price) RETURN price x 1.2 ENDFUNCTION. Another line of code runs: total <- addTax(20) + addTax(30). Trace both function calls and state the final value of total.
  29. 29th November 2010Give one reason why RAM on its own is not enough, and a computer also needs secondary storage.
  30. 30th November 2010State the difference between HTTP and HTTPS, and give one situation where HTTPS is essential.