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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.
The Internet (or internet) [a] is the global system of interconnected computer networks that uses the Internet protocol suite (TCP/IP) [b] to communicate between networks and devices. It is a network of networks that consists of private , public, academic, business, and government networks of local to global scope, linked by a broad array of ...
WAN technologies generally function at the lower three layers of the OSI model: the physical layer, ... The Internet is the largest example of internetwork. It is a ...
A gateway establishes physical and data link layer connectivity to a WAN like the Internet. Home routers provided by internet service providers (ISP) usually have the modem integrated within the unit. It is effectivelys a client of the external DHCP servers owned by the ISP.
The Internet is the best example of the internetworking of many data networks from different organizations. Terminals attached to IP networks like the Internet are addressed using IP addresses. Protocols of the Internet protocol suite (TCP/IP) provide the control and routing of messages across the and IP data network. There are many different ...
With Internet access, the Internet service provider (ISP) would grant a single WAN-facing IP address to the network. A router is configured with the provider's IP address on the WAN interface, which is shared among all devices in the LAN by network address translation.
The most notable example of internetworking is the Internet, a network of networks based on many underlying hardware technologies. The Internet is defined by a unified global addressing system , packet format, and routing methods provided by the Internet Protocol .
An Internet area network (IAN) is a concept for a communications network [1] that connects voice and data endpoints within a cloud environment over IP, replacing an existing local area network (LAN), wide area network (WAN) or the public switched telephone network (PSTN).