200-301 · Question #973
200-301 Question #973: Real Exam Question with Answer & Explanation
The correct answer is D: A static MAC address is manually added to the MAC table.. While MAC learning is the dynamic process where a switch automatically learns source MAC addresses from incoming frames, it is a function of the switch's overall MAC address management to also allow for static entries. An administrator can manually add a static MAC address to the
Question
What is a function of MAC learning on a switch?
Options
- AMAC address learning is disabled by default on all VLANs.
- BFrames received for a destination MAC address not listed in the address table are dropped.
- CThe MAC address table is used to populate the ARP table.
- DA static MAC address is manually added to the MAC table.
Explanation
While MAC learning is the dynamic process where a switch automatically learns source MAC addresses from incoming frames, it is a function of the switch's overall MAC address management to also allow for static entries. An administrator can manually add a static MAC address to the MAC table for security or network stability purposes. These static entries remain in the table across reboots (if saved to the startup config), unlike dynamically learned addresses which are lost when the switch reboots or ages out.
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