Star Topology:-

            A Star network, every host is connected to a central connection point, like a hub or a Switch. The connection between a node and hub device is a point-to-point. The device takes a signal from any node and passes it to all other nodes in the network. It works as a server and it controls the entire function of the network. It is used to connect a computer through Coaxial cable.

Features of Star Topology:-

• Every node has its own dedicated connection to the hub.
• Hub acts as a repeater for data flow.
• Can be used with twisted pair, optical fiber or coaxial cable.
• The data signal is transmitted from the source computer to the destination computer via the hub or switch.
• The common protocols used in star topology are Ethernet, Token Ring, and Local Talk.

Advantages of Star Topology:-

• It is much easier to modify or add new computers to a star network without disturbing the rest of the network.
• Single computer failures do not necessarily bring down the whole star network.
• Easy to manage and maintain the network because each node has separate cable.
• It supports a high-speed data bandwidth of approximately 100 Mbps.
• Cost effective as it uses inexpensive coaxial cable.

Disadvantages of Star Topology:-

• If the central hub goes down, then all other connected nodes will not be able to communicate with each other.
• It requires more wires compared to the ring and bus topology because it is expensive to use.
• If the hub gets failed then all the connected nodes will not be able to communicate with each other.