What does the switch do as it receives the frame from Sales-4?

Refer to the exhibit.

The entire contents of the MAC address table are shown. Sales-4 sends a data frame to Sales-1.

What does the switch do as it receives the frame from Sales-4?
A . Perform a lookup in the MAC address table and discard the frame due to a missing entry
B . Insert the source MAC address and port into the forwarding table and forward the frame to Sales-1
C . Map the Layer 2 MAC address to the Layer 3 IP address and forward the frame
D . Flood the frame out of all ports except on the port where Sales-1 is connected

View Answer

Answer: B