Which method does a Layer 2 switch primarily use to populate its MAC address table?
By examining the source MAC address of incoming frames.
By examining the destination MAC address of incoming frames.
Through manual configuration of static entries for all connected devices.
By sending Address Resolution Protocol (ARP) requests to all connected devices.
A Layer 2 switch dynamically builds its MAC address table by examining the source MAC address of every frame it receives. When a frame arrives on a port, the switch records the source MAC address and associates it with the incoming port. This automatic process is known as MAC learning. The switch uses the destination MAC address in the frame to make a forwarding decision, not to populate its table. While static MAC address entries can be manually configured, this is not the primary method for table population. Address Resolution Protocol (ARP) is used by endpoints to map IP addresses to MAC addresses, not by the switch to build its forwarding table.
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