Each computer or server is connected to the single bus cable through some kind of connector. Bus īus network topology In local area networks where bus topology is used, each machine is connected to a single cable. This is the basic mode of conventional telephony. Switched: Using circuit-switching or packet-switching technologies, a point-to-point circuit can be set up dynamically, and dropped when no longer needed.
The resources in such a connection can be released when no longer needed, for example, a television circuit from a parade route back to the studio. "Nailing down" a switched connection saves the cost of running a physical circuit between the two points. One example might be a telephone in the lobby of a public building, which is programmed to ring only the number of a telephone dispatcher. Within many switched telecommunications systems, it is possible to establish a permanent circuit. These are examples of physical dedicated channels. A children's "tin-can telephone" is one example, with a microphone to a single public address speaker is another. Permanent (dedicated) Easiest to understand, of the variations of point-to-point topology, is a point-to-point communications channel that appears, to the user, to be permanently associated with the two endpoints. The value of an on-demand point-to-point connection is proportional to the number of potential pairs of subscribers, and has been expressed as Metcalfe's Law. The value of a permanent point-to-point network is the value of guaranteed, or nearly so, communications between the two endpoints. Switched point-to-point topologies are the basic model of conventional telephony. The simplest topology is a permanent link between two endpoints (the line in the illustration above). The mapping of the nodes of the network and the physical connections between them – the layout of wiring, cables, the locations of nodes, and the interconnections between the nodes and the cabling or wiring system. The physical topology you choose for your network depends on: This refers to how the cables are laid out to connect many computers to one network. The shape of the cabling layout used to link devices is called the physical topology of the network. Which of these is chosen depends on what devices need to be connected, how reliable it has to be, and the cost associated with cabling. The computers on a home network can be arranged in a circle but it does not necessarily mean that it represents a ring network.īasic topology types The names used - such as ring or star - are only rough descriptions. Network topology is the layout of the connections ( links, nodes, etc.) of a computer network.
0 kommentar(er)
