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The textbook definition of a WAN is a computer network spanning regions, countries, or even the world. [3] [4] However, in terms of the application of communication protocols and concepts, it may be best to view WANs as computer networking technologies used to transmit data over long distances, and between different networks.
A conceptual diagram of a LAN at a residential house; the router in this case is assumed to also function as a wireless access point.Also shown in this example (shaded in yellow) is the network's connection to the Internet via fixed-line means.
A backbone or core network is a part of a computer network which interconnects networks, providing a path for the exchange of information between different LANs or subnetworks. [1]
In computer networking, a port or port number is a number assigned to uniquely identify a connection endpoint and to direct data to a specific service. At the software level, within an operating system, a port is a logical construct that identifies a specific process or a type of network service.
The network controller implements the electronic circuitry required to communicate using a specific physical layer and data link layer standard such as Ethernet or Wi-Fi. [a] This provides a base for a full network protocol stack, allowing communication among computers on the same local area network (LAN) and large-scale network communications through routable protocols, such as Internet ...
A network host is a computer or other device connected to a computer network.A host may work as a server offering information resources, services, and applications to users or other hosts on the network.
An access network is a type of telecommunications network which connects subscribers to their immediate service provider.It is contrasted with the core network, which connects local providers to one another.
A cellular network or mobile network is a telecommunications network where the link to and from end nodes is wireless and the network is distributed over land areas called cells, each served by at least one fixed-location transceiver (such as a base station).