Layer 2 switches use MAC (Media Access Control) addresses to direct packet transmission to the intended recipient.
MAC Address: A unique identifier assigned to network interfaces for communication on the physical network segment.
Switching: Layer 2 switches maintain a MAC address table to keep track of which MAC addresses are associated with which ports, enabling them to forward frames to the correct destination port.
[Reference: Cisco DevNet Associate Certification Guide, Chapter on Network Fundamentals and Switching., ]
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