PC1 tries to send traffic to newly installed PC2. The PC2 MAC address is not listed in the MAC address table of the switch, so the switch sends the packet to all ports in the same VLAN. Which switchin

Frame flooding occurs when a switch receives a frame destined for a MAC address not found in its MAC address table, causing the switch to forward the frame out all ports in the broadcast domain (VLAN) except the one it came in on.

The MAC address table is the data structure that stores MAC-to-port mappings, but it's the *absence* of an entry that triggers flooding, not the table itself describing the action.

Spanning Tree Protocol (STP) prevents switching loops by blocking redundant paths, it does not describe the behavior of forwarding frames to unknown destinations.

MAC address aging is the process by which entries are removed from the MAC address table after a period of inactivity, which is a related but distinct concept from flooding.