Explain various network topolosies present in computer network and discouss with advantages and disadvantages
Answers
Answer:
There are five types of topology – Mesh, Star, Bus, Ring and Hybrid.
A mesh topology is a network setup where each computer and network device is interconnected with one another. This topology setup allows for most transmissions to be distributed even if one of the connections goes down. It is a topology commonly used for wireless networks
Advantages of a mesh topology
Manages high amounts of traffic, because multiple devices can transmit data simultaneously. A failure of one device does not cause a break in the network or transmission of data. Adding additional devices does not disrupt data transmission between other device
Disadvantages Of A Mesh Topology
Complexity. Each node needs to both send messages as well as act as a router, which causes the complexity of each node to go up pretty significantly. ...
Network Planning. ...
Latency. ...
Power Consumption.
Star topology is a network topology where each individual piece of a network is attached to a central node (often called a hub or switch). The attachment of these network pieces to the central component is visually represented in a form similar to a star. Star topology is also known as a star network
Star topologies provide an inherent advantage that a new site can be added with ease; only the central site will have to be updated. In star topology, the central site plays an important role; if it fails, all the connections will go down. Performance of the central hub dictates the performance of the connection.
Disadvantages of a Star Topology
Requires more cable length than a linear topology. If the hub, switch, or concentrator fails, nodes attached are disabled. More expensive than linear bus topologies because of the cost of the hubs, etc
Bus topology is a specific kind of network topology in which all of the various devices in the network are connected to a single cable or line. In general, the term refers to how various devices are set up in a network.
Advantages of Bus Topology :
It works very efficient well when there is a small network. Length of cable required is less than a star topology. It is easy to connect or remove devices in this network without affecting any other device. Very cost-effective as compared to other network topology i.e. mesh and star.
The disadvantages of a bus network are:
if the main cable fails or gets damaged the whole network will fail.
as more workstations are connected the performance of the network will become slower because of data collisions.
every workstation on the network "sees" all of the data on the network – this is a security risk.