Ethernet Switches: How Do They Learn MAC Addresses?

How do Switches learn MAC addresses of its connected devices?

A. Using the destination MAC address.

B. Using DHCP

C. Using the source MAC address.

Answer:

The Ethernet switches learn MAC addresses of connected devices using the source MAC address.

Ethernet Switches learn MAC addresses of its connected devices using the source MAC address. When a frame enters a switch port, the switch examines the frame's source MAC address and adds it to the MAC address table associated with that port. This table helps the switch to understand which port to forward incoming frames to, based on the destination MAC addresses.

It is therefore incorrect to say that Switches learn MAC addresses of its connected devices using the destination MAC address or using DHCP.

By understanding how Ethernet switches learn MAC addresses, we can appreciate the intricate process by which network devices communicate and share information efficiently.