Star Topology
retrived from:https://www.comparitech.com/net-admin/network-topologies-advantages-disadvantages/
A star topology is a topology where every node in the network is connected to one central node. Every device in the network is directly connected to the central node and indirectly connected to every other node. The relationship between these elements is that the central network device is a server and other devices are treated as clients. The central node has the responsibility of managing data transmissions across the network. The central node or hub also acts as a repeater. In star topologies, computers are connected with a coaxial cable, twisted pair, or optical fiber cable.
Advantages
Star topologies are most commonly-used because you can manage the entire network from one location: the central hub. As a consequence, if a node that isn’t the central node goes down then the network will remain up. This gives star topologies a layer of protection against failures that aren’t always present with other topology setups. Likewise, you can add new computers without having to take the network offline like you have to do with a ring topology.
In terms of physical structure, star topologies require fewer cables than other topology types. This makes them simple to set up and manage over the long-term. The simplicity of the overall design makes it much easier for administrators to run troubleshooting when dealing with performance faults.
Disadvantages
Though star topologies may be relatively safe from failure, if the central node goes down then the entire network will go down. As such, the administrator needs to manage the health of the central node closely to make sure that it doesn’t go down. The performance of the network is also tied to the central node’s configurations and performance. Star topologies are easy to manage in most ways but they are far from cheap to set up and use.
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