UNIT3LAB1 building a new structure

UNIT3LAB1 building a new structure - Noel Averruz NT1310...

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Noel Averruz NT1310 04-02-15 Unit 3 Assignment 1: Network Topology Star Topology: has its own cable that connects to a central hub or switch, multipoint repeater, or even a Multi Station Access Unit. Data is passed through the hub to reach other devices on the network. A hub, switch, or computer acts as a router to transmit messages in its simplest form. Star reduces the chance of failure in the network by connecting all of the systems to a central node. Star is the most common networks because of the ease of configuring and troubleshooting it. If a wire goes bad only one node will go down which prevents a huge impact on productivity. However, because a star involves a central hub or switch as well as a lot more cabling it cost more to implement. Bus Topology: In local area networks where bus topology is used, each node is connected to a single cable. Each computer or server is connected to the single bus cable. A signal from the source travels in both directions to all machines connected on the bus cable until it finds the intended recipient. If the machine address does not match the intended address for the data, the machine ignores the data. Alternatively, if the data matches the machine address, the data is accepted. Because the bus topology consists of only one wire, it is rather inexpensive to implement when compared to other topologies. However, the low cost of implementing the technology is offset by the high cost of managing the network. Additionally, because only one cable is utilized, it can be the single point of failure .
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Linear bus: The type of network topology in which all of the nodes of the network are connected to a common transmission medium which has exactly two endpoints (this is the 'bus', which is also commonly referred to as the backbone , or trunk ) – all data that is transmitted between nodes in the network is transmitted over this common transmission medium and is able to be received by all nodes in the network simultaneously, when the electrical signal reaches the end of the bus, the signal "echoes" back down the line, causing unwanted interference. As a solution, the two endpoints of the bus are normally terminated with a device called a terminator that prevents this echo. Distributed bus: The type of network topology in which all of the nodes of the network are connected to a common transmission medium which has more than two endpoints that are created by adding branches to the main section of the transmission medium – the physical distributed bus topology functions in exactly the same fashion as the physical linear bus topology (i.e., all nodes share a common transmission medium).
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