Discover how switches efficiently build MAC address tables by learning source MAC addresses from ingress traffic.
Table of Contents
Question
What does a switch use to build its MAC address table?
A. VTP
B. DTP
C. ingress traffic
D. egress traffic
Answer
C. ingress traffic
Explanation
A switch builds its MAC address table using ingress traffic. When a frame enters a switch port, the source MAC address is recorded in the MAC address table along with the port it was received on. This allows the switch to learn which devices are connected to each port and efficiently forward frames to the intended destination.
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