Remember what Tom T. Hall and I always say, more computers are better. And, that there is no difference in an individual with two or more computers at home, and, a small office with two or more computers. Their cost has dropped to a level that anyone can afford to buy them. Once installed, work in the seamlessly in the background without interference to users at any of the work nodes. The OSs contain the necessary protocols that allow communication through the network.
Computer networks provide one overall function.
That function is to communicate in some manner with other computers that are connected together via some medium. The communication between these computers allows users to share data and resources. Data files created on one computer in the network can be shared with other computers. These data files can be anything that is digitally created, i.e., documents, spreadsheets, graphics, drawings, photos, databases, forms, or programs. Resource sharing concerns the physical and virtual devices that help users store, print, copy, send and receive the data.