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Review- Network Typologies Case Solution & Answer

Review- Network Typologies Case Solution

Typology refers to the geometric representation through which different computers are connected together. In other words, the network typology is simply a schematic description of a network arrangement, i.e. it shows how different computers are connected with each other, through the connection lines between the sender and receiver. Typologies give an idea about physical and logical aspect of the computer network. In other words, it can be stated that the typology shows how the network is physically connected and what logical flow of data within the network is.

The physical flow of a network typology shows the way within which different nodes or the computers are connected with each other in a computer network. Physical network flow show the arrangement of nodes, links, devices and the code installation in a network. On the other hand, the logical flow is bound to the network protocol, and its how how the data is transferred form one computer to the other. The different categories of network typology are explained below:

The bus typology is the simplest kind of network typologies. Bus typology refers to a type of network, where by different network devices and computers are connected to a single cable. It refers to a multi-point net- work, where a single cable serves as the backbone behind the network connection in all devices.(Forouzan, 2007)It is known as the linear bus typology, when it only has two end points. The key features in a bus typology include:

The data is transmitted by the bus typology in a single direction. A single cable connects the devices between the sender and the receiver. In a bus typology, when  the data is transferred, all the computer in the network will get the message but only the receiver of the message will accept and the rest of the computers will reject the message. The data is forwarded in one direction only, and once the data reaches the final destination, it is removed by the transmitter in order to reduce the disruption in data flow and preventing the signal bounce.

A bus typology is easy and the simplest to install between the devices. As compared to mesh and star typologies; relatively less cabling is required, as the devices are connected to a single cable, through the most efficient path. It is a cost effective network typology, which is easy to understand and can be used for small devices. It provides an advantage over other network typologies, as it can be expanded to join two cables together.

A key disadvantage in a bus typology is that if a single cable fails then the whole network connection between the devices, fails. The overall network performance gets decreased if there is a higher number of nodes or if there is a high network traffic. The length of the cable is limited.Overall network speed is slower as compared to ring typology.

The other typology is a star typology. In star typology, all the computer devices are connected with each other, through a single hub. The hub serves as the central node, and the rest of the nodes are connected to the central node.(Tutorials Point, 2019) The key features of a star typology are:

In a start typology; different nodes have their individual connection with the hub, which serves a data flow repeater between the devices.Star typology can be used with an optical fibre, twisted pair or a coaxial cable.

Star typology involves low network traffic, which results in a high performance. The overall setup is easy to install, modify and troubleshoot. As compared to the bus typology; the whole network does not fail, as only the failed node loses the connection while rest nodes do not lose the connection.

Despite having crucial advantages over other network typologies, the star typology is bit expensive as it is costly to setup. As all nodes are dependent on a single hub, so the failure of hub leads towards the failure of network among all the nodes……………

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