Huawei H12-811_V1.0 Exam With Confidence Using Practice Dumps

Detailed Explanation:In this scenario, the MAC address 00e0-fc99-9999 is associated with multiple IP addresses through dynamic ARP learning, indicating that the host’s IP has changed several times. The ARP table on the switch shows multiple entries with different IPs mapped to the same MAC address, which is common when a device frequently updates its IP. As ARP is a dynamic protocol, these entries reflect the device's current and past IP associations. (Reference: HCIA-Datacom Training Material, ARP Operation and IP-MAC Mapping)

Restoring factory defaults on an AR2200 router requires both clearing the current configuration and resetting saved configurations. These steps ensure that any custom settings are removed, reverting the router to its original state. Simply restarting or specifying a startup file without clearing configurations would not remove custom settings​.

Switch (A): A network switch is a fundamental device used to connect devices in a local area network (LAN) and forward packets based on MAC addresses.

Firewall (B): A firewall is used to filter and protect the network from unauthorized access and threats.

Router (D): A router is essential for forwarding packets between different networks and managing routing.

Agile Controller (C): This is a network automation and management tool rather than a fundamental networking device. Since it is not typically deployed as a core network device, option C is the correct answer.