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Daily Practice · GCSE Computer Science

February 1982 5-a-day

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February 1982

28 sheets · 140 questions · GCSE

February 1982 compilationAll answers

Every sheet in February 1982

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 1982Evaluate the expression 23 DIV 4.
  2. 2nd February 1982State the correct order of the three operations used to read data from a text file.
  3. 3rd February 1982A 1 TB hard disk drive costs 40 pounds. A 500 GB solid-state drive costs 60 pounds. Calculate the cost per gigabyte of each device, and state which is cheaper per GB. Use 1 TB = 1000 GB.
  4. 4th February 1982Name the four layers of the TCP/IP model in order from the one closest to the user.
  5. 5th February 1982A 'quantity' field on a website must only accept whole numbers from 1 to 10. Which validation check identifies that 15 has been entered?
  6. 6th February 1982A table called products has fields productId, name, price and stock. Write an SQL statement that changes the price of the product with productId 7 to 15.99.
  7. 7th February 1982A row of 8 pixels is WWWBBBWW. Use run-length encoding to encode this row as pairs of (colour, run length).
  8. 8th February 1982An array contains [9, 2, 6], to be sorted using insertion sort. Show the state of the array after each new element has been inserted into its correct position.
  9. 9th February 1982Complete: NOT 0 = ?
  10. 10th February 1982Convert the denary number 200 to hexadecimal, showing your working.
  11. 11th February 1982State what LAN stands for.
  12. 12th February 1982A 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.
  13. 13th February 1982An 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.
  14. 14th February 1982Which CPU register holds the address of the next instruction to be fetched?
  15. 15th February 1982Distinguish between the network security threats known as phishing and pharming.
  16. 16th February 1982An array named temps holds 12 values. State the index of the first item and the index of the last item.
  17. 17th February 1982A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
  18. 18th February 1982A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
  19. 19th February 1982A 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.
  20. 20th February 1982State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.
  21. 21st February 1982State the pseudocode operator commonly used to join (concatenate) two strings, then show how it joins 'Rev' and 'ision' to produce 'Revision'.
  22. 22nd February 1982Give one example of an optical secondary storage device.
  23. 23rd February 1982State the difference between HTTP and HTTPS, and give one situation where HTTPS is essential.
  24. 24th February 1982State the term used for realistic data that a program would be expected to handle during normal use.
  25. 25th February 1982Define the term 'primary key' as used in a database table.
  26. 26th February 1982State the difference between lossy and lossless compression.
  27. 27th February 1982State the condition that must be met before a binary search can be used on an array.
  28. 28th February 1982A 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.