A tree topology is a variation of a star. As in a star, modes in a tree are linked to a central hub that controls the traffic to the network. However, not every device plugs directly into the central hubs. The majority of devices connect to a secondary hub that in turn is connected to the central hubs.
The advantage and disadvantages of a tree topology are generally the same as those of star. The addition of secondary hubs, however, brings two further advantages. First, it allows more devices to be attached to a single central hubs and can, therefore, increase the distance of a signal can travel between devices. Second it isolates the network and prioritize communication from different computers.
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