What is the main goal of building computer networks?

The existence of a network for a computer with the company or institution would first save time and effort first and connecting parts or sections work together smoothly and flexible in the event of any errors or problems to work becomes Ran find a place mistakes are easier first, and then the solution quickly and convincingly, and after you have records is correct and sound and will help the decision-maker to work to get proper information.

to make the use of computer more easy..from another view to transfer data and information in a simple and  easy mode