Computer Communications: Bus Network :: essays research papers

Computer Communications Bus NetworkBus Network, in calculating machine science, a topology ( bod) for a local atomic number 18a network in which all nodes are connected to a main communications line(bus). On a bus network, individually node monitors activity on the line. Messages aredetected by all nodes but are accepted only by the node(s) to which they areaddressed. Beca habituate a bus network relies on a common data highway, amalfunctioning node simply ceases to communicate it doesnt disrupt operationas it might on a ring network, in which messages are passed from one node to the beside. To avoid collisions that occur when two or more nodes try to use the lineat the same time, bus networks commonly rely on collision detection or TokenPassing to regulate traffic.Star NetworkStar Network, in computer science, alocal area network in which each device (node) is connected to a rallycomputer in a star-shaped configuration (topology) commonly, a networkconsisting of a central comput er (the hub) surrounded by terminals. In a starnetwork, messages pass directly from a node to the central computer, whichhandles any further routing (as to another node) that might be necessary. A starnetwork is reliable in the sense that a node can cave in without affecting anyother node on the network. Its weakness, however, is that failure of the centralcomputer results in a shutdown of the entire network. And because each node is one by one wired to the hub, cabling costs can be high.Ring networkRingNetwork, in computer science, a local area network in which devices (nodes) areconnected in a closed loop, or ring. Messages in a ring network pass in onedirection, from node to node. As a message travels around the ring, each nodeexamines the destination address attached to the message. If the address is thesame as the address assigned to the node, the node accepts the messageotherwise, it regenerates the signal and passes the message along to the nextnode in the circle. Such regen eration allows a ring network to cover largerdistances than star and bus networks. It can also be knowing to bypass anymalfunctioning or failed node. Because of the closed loop, however, rude(a) nodescan be difficult to add. A ring network is diagrammed below.Asynchrous TransferModeATM is a new networking technology standard for high-speed, high-capacityvoice, data, text andvideo transmission that will soon transform the waybusinesses and all types of organizationscommunicate. It will enable themanagement of information, integration of systems andcommunications betweenindividuals in ways that, to some extent, havent even been conceived yet.