Answer:
A logical unit of a system.
Explanation:
i'm thinking your are talking about system layers such as the ISO? Layers help identify the order of how the whole system works.
Answer:
Yes It's true but You forgot email
Explanation:
You would want to check for any programs running in the background, as well as run a virus scan.
Answer:
Parameter
Explanation:
A parameter is a variable/argument of a function that are placed between the parentheses in the function's definition.
Hope this is clear :)
