Computer Networking

Computer networking is the engineering discipline concerned with communication between computer systems. Such communicating computer systems compose a computer network. Normally these networks involve at least two devices capable of being networked with at least one usually being a computer. The devices can be separated by a few meters or nearly unlimited distances. Computer networking is considered as a sub-discipline of telecommunications, and sometimes of computer science, information technology and computer engineering as well.

Computer networks rely heavily upon the theoretical and practical application of these scientific and engineering disciplines. A computer network is any set of computers connected to each other. Examples of networks are the Internet, a wide area network that is the largest to ever exist, or a small home local area network (LAN) with two computers connected with standard networking cables connecting to a network interface card in each computer.