How does a switch process a frame received on Fa0/1 with the destination MAC address...

The verified answer is C. A Layer 2 switch floods an unknown unicast frame when the destination MAC address is missing from its MAC address table. The flood is limited to ports in the same VLAN and excludes the ingress port where the frame arrived. Cisco CCNA 200-301 v1.1 places this skill in Network Access, where the exam expects a working understanding of how the feature behaves on real Cisco networks, not just a memorized command. The switch does not drop the frame immediately, send it back out the receiving port, or wait for the aging timer to expire. In production, this distinction matters because a misapplied command or design choice usually creates an outage, a security gap, or unnecessary troubleshooting noise. The correct choice matches the control-plane, data-plane, wireless, security, or services behaviour described in the scenario and should be preferred over options that merely sound related.