Network Topology and Wiring
Professor: Larry Schreider
Network Topologies are the different arrangements that contain many different element such as links, nodes, etc. This helps with communication and network information processing. This is a major part of today’s technology and is used by big business as well as for home and personal use. There have been eight different network topologies that have been recognized though out a study.. Throughout this paper each of the eight topologies will be explained as to what they are, what makes each topology different from each other, why one topology is better to use verses the others, and how the size of an organization may affect the topology choices. The eight different types of topologies are: Point to point, Star, Bus, Mesh, Tree, Hybrid, Daisy Chain, and the Ring. The first four topologies that will be discussed are the point to point, the star, the bus, and the mesh. A point to point topology is known as the simplest topology because of its permanent link between two end points. Star topology each network host is connected to a central hub with a point-to-point connection to a central node which is called a hub or switch. Bus topology each computer is connected to a single Bus cable, which then sends a signal which travels in both directions from the source to all machines connected on the Bus cable, until it finds the intended recipient. If the machine address for some reason does not match the intended address for the data, then the machine ignores that machine address. However, if the data matches it is accepted. The bad part of this topology is that it has a single point of failure which is the cable and if this happens the whole network can shut down. Mesh-is a fully connected network in which each node is connected to each other. A fully connected network does not need to use switching or broadcasting. However its major disadvantage is that the number of connections grows with the number of nodes. It is extremely impractical for large networks. A two node network is technically a fully connected network. The second set of topologies that will be discussed are the tree, the hybrid, the daisy chain and the ring. Tree topology is a combination of a Bus and Star topology. The reasoning this topology is called a tree topology is because the network looks like a tree. One advantage of a tree topology is that it is scalable, the secondary nodes allow more devices to be connected to a central node; a point-to-point connection of devices is another benefit. Having different levels of a network makes it more manageable, hence easier to identify fault identification and isolation. Hybrid topology uses a combination of two or more topologies in such a way that the resulting network does not exhibit one of the standard topologies (e.g., bus, star, ring etc.) For example, a tree network connected to a tree network is still a tree network topology. Two common examples for a hybrid network are star ring network and star bus network. Hybrid topology is a combination of Bus, star and ring topologies. Daisy chain topology, is the easiest way to add more computers into a network or connecting more computers to the next. A Daisy-chained network can take two basic forms-Linear and Ring. A linear topology puts a two-way link between one computer and the next. By connecting the computers at each end, a ring topology can be formed. This leads us into the last topology on the list. Ring- A Network topology that is set up in a circular fashion in which data travels around the ring in one direction and each device on the ring acts a repeater to keep the signal strong as it travels. Each device incorporates a receiver for the incoming signal and a transmitter to send the data on to the next device in the ring. The network is dependent on the ability of the signal to travel around the ring. When a...
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