A type of Knowledge Management System is called

 Knowledge management systems  refer to the use of modern information technologies—the Internet, intranets, extranets, databases—to systematize, enhance, and expedite intra-firm and inter-firm knowledge management.

Explanation:

yes we can change both the color of the value of a cell as well as background color of a cell at the same time .

as we know that excel sheet consists of columns and rows.

and intersection of column and row is called cell.

we can change color of the cell and background of the cell at the same time.

hence the statement that

can a person change color of the cell and background of the cell at the same time is true.

i'm so sorry that's not a question and this isn't an answer