A node is a device that is connected as part of a computer network. Every node must have a MAC address or Data Link Control address if it is at least an OSI model layer 2 device. Nodes can be computers, personal digital assistants (PDAs), cell phones, or various other network appliances, such as routers, switches, and hubs. Nodes that actively route data for the other networked devices as well as themselves are called supernodes. A Device can be taken to mean: an electrical device designed to carry power, but not use it. ... A computer network is a system for communication between computers. ... In computer networking a Media Access Control address (MAC address) is a unique identifier attached to most forms of networking equipment. ... In the OSI networking model, Data Link Control (DLC) is the service provided by the data link layer. ... The Open Systems Interconnection Reference Model (OSI Model or OSI Reference Model for short) is a layered abstract description for communications and computer network protocol design, developed as part of the Open Systems Interconnection initiative. ... The IBM ThinkCentre A Series is a popular line of computers. ... Palm IIIxe PDA Personal digital assistants (PDAs or palmtops) are handheld devices that were originally designed as personal organizers, but became much more versatile over the years. ... A D-Link Wi-Fi NAT router, popular for home and small office networks A router is a computer networking device that forwards data packets across an internetwork toward their destinations, through a process known as routing. ... A modular network switch with 3 network modules (a total of 24 Ethernet and 14 Fast Ethernet ports) and one power supply. ... 4 port NETGEAR ethernet hub An Ethernet hub or concentrator is a device for connecting multiple twisted pair or fiber optic Ethernet devices together, making them act as a single segment. ... In peer-to-peer networking, a supernode works as one of that networks relayers and proxy servers, handling data flow and connections for other users. ...
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