What does a switch do if it doesn't find the destination MAC address in its switching table?
A) sends an error to the sending device
B) discards the frame
C) sends an ARP to learn the MAC address
D) forwards the frame out all ports

Question

Quizplus · Accepted Answer

When a switch doesn't find the destination MAC address in its switching table, it forwards the frame out all ports except the port it was received on, in an attempt to reach the destination device. This process is known as "flooding."

What Does a Switch Do If It Doesn't Find the Destination