Computer networks enable multiple devices and computers to communicate and share resources and information. This allows businesses to communicate more efficiently, increase productivity, and provide better customer service. A computer network is comprised of two main components: nodes, or devices, and links. Nodes are the communication endpoints such as computers, printers as well as mobile devices, while links are the physical connections that carry information between them. These links comprise cables, fiber optics, and wireless signals such as Wi-Fi. Data is transferred from one node to another using a set of pre-programmed rules, referred to as communication protocols.

Some of the main advantages of computer networking are:

Computer networks are the most effective when they permit users to share software and hardware resources. For example, a network can allow multiple employees to access the same scanners and printers. This helps to cut expenses and increases productivity by allowing work to be completed without the requirement for each employee to have their own personal equipment. It also allows for the easy sharing of documents which can make processes easier in areas like project collaboration and record keeping. Computer networks can make it easier for companies to manage and control large quantities of data. This can be beneficial for industries like insurance, banking, and marketing.