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Bus topology
1. Course Tittle: Computer Networks Theory
Course Code: CSE317
Topics: Topology, Bus Topology
Submitted to:
Pranab Bandhu Nath
Senior Lecturer,Dept of CSE
City University, Dhaka.
Submitted By:
Name: Neheruma Sultana Riya
ID:1834902578
Dept: CSE(Day)
Batch:49th
2. Topology: Topology defines the structure of the network of how all the
components are interconnected to each other.
There are two types of topologies: physical and logical topology.
There are seven basic types of physical topology:
1. Bus topology,
2. Star topology,
3. Ring topology,
4. Tree topology,
5. Mesh topology,
6. Hybrid topology.
Bus Topology:
In bus topology there is a main cable and all the devices are connected to this main
cable through drop lines. There is a device called tap that connects the drop line to
the main cable. Since all the data is transmitted over the main cable, there is a limit
of drop lines and the distance a main cable can have. The configuration of a bus
topology is quite simpler as compared to other topologies. The backbone cable is
considered as a "single lane" through which the message is broadcast to all the
stations.
Advantages of Bus topology:
1. Easy installation, each cable needs to be connected with backbone cable.
2.Less cables required than Mesh and star topology.
2. In bus topology, nodes are directly connected to the cable without passing
through a hub.
3. 3. Coaxial or twisted pair cables are mainly used in bus-based networks that
support upto 10 Mbps.
4. A failure in one node will not have any effect on other nodes.
Disadvantages of Bus topology:
1. Difficultly in fault detection.
2. A bus topology is quite simpler, but still it requires a lot of cabling.
3. It requires specialized test equipment to determine the cable.
4. Adding new devices to the network would slow down the network.
5. Attenuation is a loss of signal leads to communication issues. Repeaters are
used to regenerate the signal.
6. If two nodes send the messages simultaneously, then the signals of both the
nodes collide with each other.
