The answer to your question is,
Server virtualization
-Mabel <3
There is not really a key benifit, but it does help with little things.
Answer:
A. A1
Explanation:
Worksheet's Columns are named with Alphabets. i.e. A,B,C,D,E....
And Worksheet's rows are named with numbers. i.e. 1,2,3,4,5....
So the intersection of first row number as "1" and First Column name as "A" is A1 as worksheet displays column name first and then row number.
Answer:
In word there is a setting where you can mange all of user's permission in the document. These are a few permission settings: Read only and Can edit.