Computer Communications: Bus Network :: essays research papers

Computer Communications mass NetworkBus Network, in computer science, a topology (configuration) for a local line of mountaininess interlock in which all lymph thickeners are connected to a important communications line(bus). On a bus network, each(prenominal)(prenominal) node monitors activity on the line. Messages aredetected by all nodes scarce are accepted only by the node(s) to which they areaddressed. Beca social function a bus network relies on a common data highway, a break node simply ceases to communicate it doesnt disrupt operationas it efficacy on a call off network, in which messages are passed from one node to thenext. 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 centralcomputer in a star-shaped configuration (topol ogy) commonly, a networkconsisting of a central computer (the hub) surrounded by terminals. In a starnetwork, messages pass direct from a node to the central computer, whichhandles any further routing (as to an otherwise node) that energy be necessary. A starnetwork is reliable in the finger that a node can fail 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 isindividually wired to the hub, cabling cost can be high.Ring networkRingNetwork, in computer science, a local area network in which devices (nodes) areconnected in a unlikable 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 pass es the message along to the nextnode in the circle. Such regeneration allows a ring network to cover largerdistances than star and bus networks. It can excessively be designed to bypass anymalfunctioning or failed node. Because of the closed(a) loop, however, new 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 transmittal that will soon transform the waybusinesses and all types of organizationscommunicate. It will change themanagement of information, integration of systems andcommunications betweenindividuals in ways that, to some extent, havent even been conceived yet.