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A station is a device that has access to WiFi and allows transmission and reception of data. Both the ends of data sharing is called as a station. The station is where data starts while transmission and data reach while receiving:
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Router
A router works at the network layer of the OSI layers. Thereby router ensures machine-to-machine transfer of data packets between source and destination:
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Bridge
A bridge works at the data link layer of the OSI layers. Therefore it enables the node-to-node transfer of data between source and destination. Besides acts as the connecting center of separate networks into one network: