Which of the following topologies gives highest reliability?
Which of the following topologies gives highest reliability? Correct Answer Mesh topology
Concept:
Reliability is measured by the frequency of failure, the time it takes a link to recover from failure and network's robustness.
Explanation:
Topology refers to the way in which a network is laid out physically. Two or more devices connect to a link to form a topology.
Mesh topology:
In this, each device has a dedicated point to point link to every other device. Dedicated means that a link carries traffic only between two devices it connects. It is the most reliable topology.
Star topology:
In this, each device has a dedicated point to point link only to a central controller called a hub. Devices are not directly connected to each other. It does not allow direct traffic between devices. Each device needs only one link.
Bus topology:
It is multipoint. One long cable acts as a backbone to link all the devices in a network. Nodes are connected to the bus cable by drop lines and taps.
Ring topology:
In this, each device has a point to point connection with only two devices on either side of it. A signal is passed along the ring in one direction from device to device until it reaches its destination.
Therefore Mesh Topology gives highest reliability
