Network topology
A network topology refers to the layout of the computers and devices in a communications network
Transmission media
on which data, instructions, or information travel in a communications system.The amount of data, instructions, and information that can travel over a communications channel sometimes is called the bandwidth.
Network topology
Bus Topology
Advantages
It is easy to handle and implement.
It is best suited for small networks.
Disadvantages
The cable length is limited. This limits the number of stations that can be connected.
This network topology can perform well only for a limited number of nodes.
Ring Topology
Advantage
The data being transmitted between two nodes passes through all the intermediate nodes. A central server is not required for the management of this topology.
Disadvantages
The failure of a single node of the network can cause the entire network to fail.
The movement or changes made to network nodes affects the performance of the entire network.
Star Topology
Advantages
Due to its centralized nature, the topology offers simplicity of operation.
It also achieves an isolation of each device in the network.
Disadvantage
The network operation depends on the functioning of the central hub. Hence, the failure of the central hub leads to the failure of the entire network.
Transmission media
advantages
- used for long distance communication
- high speed data transmission
- many reciver stations can receive signal from the same sender station
disadvantages
- very costly
No comments:
Post a Comment