What action takes place when a frame entering a switch has a unicast destination MAC address appearing in the MAC address table?

Question:
What action takes place when a frame entering a switch has a unicast destination MAC address appearing in the MAC address table?

• The switch updates the refresh timer for the entry.
• The switch forwards the frame out of the specified port.
• The switch purges the entire MAC address table.
• The switch replaces the old entry and uses the more current port.

Exam with this question: Switching, Routing, and Wireless Essentials ( Version 7.00) - SRWE Final Exam

Exam with this question: CCNA v7.0 Certification Practice Exam