Hi!
It depends on how close you have paraphrased it. If your "common knowledge" is very closely related to the resource, it would be considered plagiarism.
Answer:
J frame class has to be extended for the creation of a window
Explanation:
J frame needs to be extended to create a window, this is because this class in windows has a title, support buttons components, a border or we can say it has decorations for windows.
The rest of the classes like J button and J text fields lie within the J frame and the Container class is a super class and provides only outlines to J Frame class.
Answer:
Remove the hard drive from the computer case and install it in another computer.
Explanation:
This can allow us to stop the spread of virus and also may be the other computer can get our data safely despite of virus.
Answer:
Centralization
Explanation:
The primary difference between a blockchain and a database is centralization. While all records secured on a database are centralized, each participant on a blockchain has a secured copy of all records and all changes so each user can view the provenance of the data.