[Answer] How do switches and bridges learn where devices are located on a network?

Answer: When a frame enters a port the source MAC address is copied from the frame header.(not destination)
How do switches and bridges learn where devices are located on a network?

A network bridge is a computer networking device that creates a single aggregate network from multiple communication networks or network segments.This function is called network bridging. Bridging is distinct from routing.Routing allows multiple networks to communicate independently and yet remain separate whereas bridging connects two separate networks as if they were a single network .

A network switch (also called switching hub bridging hub and by the IEEE MAC bridge ) is networking hardware that connects devices on a computer network by using packet switching to receive and forward data to the destination device. A network switch is a multiport network bridge that uses MAC add…

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