In the following exhibit, what will happen when a frame destined for 0001.6c58.486f enters the switch?

A. The frame will be forwarded to the uplink port.
B. The frame will be forwarded to all active ports.
C. The frame will be dropped.
D. The frame will be forwarded to a MAC address of ffff.ffff.ffff.

B. When a MAC address is unknown by the switch, the switch will forward the frame to all ports; this is also called flooding the frame. When the destination system acts upon it, the switch learns its MAC address through source MAC address learning.