Hub requires more resources and regular maintenance because it is the central system of star topology. If hub goes down everything goes down, none of the devices can work without hub.Дў. Easy fault detection because the link can be easily identified. Robust, if one link fails, other links will work just fine.ДҐ. Less amount of cables required because each device needs to be connected with the hub only.Д¤. Less expensive because each device only need one I/O port and needs to be connected with hub with one link.ДЈ. If one device wants to send data to other device, it has to first send the data to hub and then the hub transmit that data to the designated device. Unlike Mesh topology, star topology doesnвЂ™t allow direct communication between devices, a device must have to communicate through hub. In star topology each device in the network is connected to a central device called hub. Scalability issues because a device cannot be connected with large number of devices with a dedicated point to point link. Since each device needs to be connected with other devices, number of I/O ports required must be huge.ДЈ. Amount of wires required to connected each system is tedious and headache.Дў. Mesh topology is secure because there is a point to point link thus unauthorized access is not possible.Д¤. Mesh topology is reliable and robust as failure of one link doesnвЂ™t affect other links and the communication between other devices on the network.ДЈ. No data traffic issues as there is a dedicated link between two devices which means the link is only available for those two devices.Дў. Number of links in a mesh topology of n devices would be n(n-1)/2. Lets say we have n devices in the network then each device must be connected with (n-1) devices of the network. When we say dedicated it means that the link only carries data for the two connected devices only.

In mesh topology each device is connected to every other device on the network through a dedicated point-to-point link. There are five types of topology in computer networks: There are five types of topology вЂ“ Mesh, Star, Bus, Ring and Hybrid.

Geometric representation of how the computers are connected to each other is known as topology.

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