Network Nodes

What does a network node do? A network node sits at a point in the network where it sends, receives, stores or creates information. It transmits data to communicate with other nodes in the network. In a computer network, nodes can be physical networked devices, such as modems, PCs and printers. These devices recognize transmissions from other nodes and forward them to other nodes. A node checks for identification, such as an IP address, to grant access to the node. Nodes connect over a link or communication channel. In a computer network these may be cable, fiber optic or wireless connections.