Bus Topology

Bus Topology 

what is bus topology in computer networks?

Bus topology is the most basic of the bunch, and it really does sort of resemble does sort of resemble a bus, but more like one that's been in a wreck. Anyway the bus topology consist of  two distinct and terminated ends, with each of its computers connecting to one unbroken cable running its entire length.Back in the day, with used to attach computers to the main cable with wire taps,but this didn't work all that well so we began using drop cables in their place.

If we were dealing with 10Base2 Ethernet,we would slip a 'T' into the main cable anywhere we wanted to connect a device to it instead of using drop cables.

BUS Topology

Even through all the computer on the kind of network see all the data flowing through the cable, only the one computer, which the data is specifically addressed to, actually gets the data. some of the benefit of using a bus topology are the it's easy to install and it's physical topologies. But it also has some drawbacks.

 For instance, it hard to troubleshoot, change or move, and it really doesn't offer much in the way of fault tolerance because everything is connected to that single cable.This means the any fault in the cable would basically brings the whole network down.

Advantages:

1. It works well when you have a small network.
2. Easiest network topology for connecting computers or peripherals in a linear fashion.
3. Requires less cable length than a star topology.
4. Easy to implement and extend
5. Well suited for temporary networks.
6. Initially less expensive than other topologies
7.  It is a cheap topology.

Disadvantages:

1. Difficult to identify the problems if the whole network goes down.
2. It can be hard to troubleshoot individual device issues.
3. Not great for large networks.
4. Terminators are required for both ends of the main cable.
5. Additional devices slow the network down.
6. Limited cable length and number of stations.
7. If there is a problem with the cable, the entire network goes down.
8. Maintenance costs may be higher in the long run.
9. Performance degrades due heavy traffic. 
10. Low security.

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