Question

question 9
what addressing information is recorded by a switch to build its mac address table?
the source layer 3 address of outgoing packets
the source layer 2 address of incoming frames
the destination layer 3 address of incoming packets
the destination layer 2 address of outgoing frames

Explanation:

A switch operates at Layer 2 (Data - Link Layer). It builds its MAC address table by recording the source Layer 2 (MAC) address of incoming frames. This helps the switch to know which device is connected to which port. Layer 3 addresses are related to IP addresses and are used by routers.

Answer:

The source Layer 2 address of incoming frames