a t chapter 2 Network Classification NODE a node on a network is a point of connection into a network, or a point at which one or more transmission lines (circuits)interconnect, such as Where a router or a switch connects into the network network Management and operation five node network.cnNetwork Management and Operation NODE A node on a network is a point of connection into a network, or a point at which one or more transmission lines (circuits) interconnect, such as where a router or a switch connects into the network. www.gxmu.edu.cn five node network Chapter 2 Network Classification