When does a switch use frame filtering?

Question:
When does a switch use frame filtering?

• The destination MAC address is for a host on a different network segment from the source of the traffic.
• The destination MAC address is for a host on the same network segment as the source of the traffic.
• The destination MAC address is for a host with no entry in the MAC address table.
• The destination MAC address is for a host on a network supported by a different router.

Exam with this question: CCNA 2 (v5.0.3 + v6.0) Practice Final Exam Answers