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This notice was placed on June 25, 2018.  The Network topology It is defined as a physical or logical map of a network to exchange data. In other words, it is the way in which the network is designed, whether on the physical or logical level. The network concept can be defined as “set of interconnected nodes.” What a node is specifically depends on the type of network in question. [ first ] \u200b The logical topology is determined only the configuration of the connections between nodes. The distance between nodes and physical interconnections belong to the physical topology of the network. Topologies [ To edit ] There are two types of network topologies: physical and logics. [ 2 ] \u200b The arrangement of the transmission medium used to connect the devices is the physical topology of the network, together with the location of the nodes and the connections between the devices and the wiring. [ 3 ] \u200b The logical topology is the way in which the data passes through the network, and does not take into account the physical connections of the devices, seeing them only as nodes. [ 4 ] \u200b [ 5 ] \u200b Classification [ To edit ]  Network topology studies recognize eight basic types of topologies: [ 6 ] \u200b Point to point [ To edit ] The simplest topology is a permanent link between two final points known as point to point (PTP). The topology switching point is the basic catwalk of conventional telephony. The value of a permanent network of PTP is communication without obstacles between the two final points. The value of a PTP connection on demand is proportional to the number of possible pairs of subscribers and has been expressed as Metcalfe’s law. And bus [ To edit ] In a network using this topology, each node connects to a central cable. This is known as “bus.” All data transmission between nodes occurs through this communication channel and is received by all nodes simultaneously. [ 3 ] \u200b Star network [ To edit ] The Star Topology Reduce the possibility of network failure by connecting all nodes to a central node. When applied to a network based on the star topology, this central concentrator forwards all transmissions received from any peripheral node to all peripheral nodes of the network, sometimes even to the node that sent it. All peripheral nodes can be communicated with others transmitting or receiving from the central node only. A failure in the connection line of any node with the central node would cause the isolation of that node with respect to others, but the rest of the systems would remain intact. The type of concentrator ( hub ) It is used in this topology, although it is very obsolete; A commonly used a switch . The disadvantage lies in the load that falls on the central node. The amount of traffic that must be supported is large and will increase as we add more peripheral nodes, which makes it little recommended for large networks. In addition, a failure in the central node can leave the entire network inoperative. The latter also entails a greater vulnerability of the network, as a whole, before attacks. If the central node is passive, the origin node must be able to tolerate an echo of its transmission. A network, in Activa Star, has an active central node that normally has the means to prevent problems related to echo. Tree network [ To edit ] A tree topology, also known as hierarchical topology, can be seen as a collection of star networks ordered in a hierarchy. This tree has individual peripheral nodes – for example, leaves – that require “transmit to” and “receive another node and do not need to act as repeaters or regenerators. Unlike star networks, the function of the central node can be distributed. As in conventional diagonal networks, individual nodes can be isolated from the network by a timely failure on the connection route of the node. If a link fails that connects with a sheet node, that sheet node is isolated; If a link with a node that is not a sheet fails, the entire section is isolated from the rest. To relieve the amount of traffic that is needed to retransmit in its entirety, to all nodes, more advanced central nodes were developed that allow to maintain a list of the identities of the different systems connected to the network. These switches Network “would learn” how the structure of the network is transmitting data packages to all nodes and then observing where the packages come from is also used as a plug or artifact. See also [ To edit ] References [ To edit ] external links [ To edit ]      "},{"@context":"http:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"https:\/\/wiki.edu.vn\/all2en\/wiki14\/#breadcrumbitem","name":"Enzyklop\u00e4die"}},{"@type":"ListItem","position":2,"item":{"@id":"https:\/\/wiki.edu.vn\/all2en\/wiki14\/topology-of-network-wikipedia-free-encyclopedia\/#breadcrumbitem","name":"Topology of Network – Wikipedia, free encyclopedia"}}]}]