Node (N)

A node (N) is a fundamental point or device within a network that can send, receive, or store data. Think of it like a hub or intersection—for example, a computer, a server, or a switch—where information passes through or is processed. Nodes connect with other nodes to form a network, enabling communication and data exchange. They are essential building blocks in various systems, such as the internet, power grids, or transportation routes, helping organize and control the flow of data or resources efficiently across the entire network.