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Daily Practice · GCSE Computer Science

February 1977 5-a-day

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February 1977

28 sheets · 140 questions · GCSE

February 1977 compilationAll answers

Every sheet in February 1977

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 1977Order these from fastest access speed to slowest: RAM, cache, registers, secondary storage.
  2. 2nd February 1977Which piece of UK legislation makes it a criminal offence to gain unauthorised access to a computer system?
  3. 3rd February 1977Evaluate the expression 23 DIV 4.
  4. 4th February 1977State the correct order of the three operations used to read data from a text file.
  5. 5th February 1977A 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.
  6. 6th February 1977Give two reasons why network communication is divided into layers.
  7. 7th February 1977A 'quantity' field on a website must only accept whole numbers from 1 to 10. Which validation check identifies that 15 has been entered?
  8. 8th February 1977A 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.
  9. 9th February 1977A row of 8 pixels is WWWBBBWW. Use run-length encoding to encode this row as pairs of (colour, run length).
  10. 10th February 1977An 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.
  11. 11th February 1977Complete: NOT 0 = ?
  12. 12th February 1977Convert the denary number 200 to hexadecimal, showing your working.
  13. 13th February 1977State what LAN stands for.
  14. 14th February 1977Explain why an interpreter is often preferred while a program is being written.
  15. 15th February 1977An 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.
  16. 16th February 1977Which CPU register holds the address of the next instruction to be fetched?
  17. 17th February 1977Distinguish between the network security threats known as phishing and pharming.
  18. 18th February 1977A 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.
  19. 19th February 1977A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
  20. 20th February 1977A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
  21. 21st February 1977A 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.
  22. 22nd February 1977State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.
  23. 23rd February 1977State the pseudocode operator commonly used to join (concatenate) two strings, then show how it joins 'Rev' and 'ision' to produce 'Revision'.
  24. 24th February 1977Give one example of an optical secondary storage device.
  25. 25th February 1977State the layer that IP operates in, and describe its job.
  26. 26th February 1977State the term used for realistic data that a program would be expected to handle during normal use.
  27. 27th February 1977Define the term 'primary key' as used in a database table.
  28. 28th February 1977State the difference between lossy and lossless compression.