A WAN (Wide Area Network) is a telecommunications network that extends over a large geographic area, such as a city, country, or even worldwide. It connects multiple smaller networks, like local area networks (LANs) or metropolitan area networks (MANs), allowing them to communicate and share resources over long distances.
A wide area network (WAN) refers to a network that spans a broad geographic area, typically consisting of multiple LANs and MANs connected through public or private telecommunications links. WANs enable organizations to connect their various branches, offices, and remote locations to a central network.
An example of a WAN is the internet, which connects millions of smaller networks worldwide, enabling communication and data sharing on a global scale. Another example is a multinational corporation’s private WAN, which links its regional offices across different countries for secure data exchange and communication.
The two types of WAN networks are point-to-point WAN and packet-switched WAN. A point-to-point WAN provides a direct connection between two locations, usually via leased lines. A packet-switched WAN uses packet-switching technology to transmit data in small packets over shared network infrastructure, optimizing bandwidth and allowing multiple connections simultaneously.
The basics of WAN involve understanding its components, such as routers, switches, and transmission media (fiber optic cables, satellite links, etc.), and the protocols used for data transmission, such as MPLS (Multiprotocol Label Switching) and VPN (Virtual Private Network). WANs require robust security measures, efficient data routing, and management to ensure reliable and secure communication over long distances.