H12-811_V1.0 Premium Exam Questions

The root path cost is calculated by summing the costs of each port on the path from the root bridge to the receiving port. In this case, assuming each link has a cost of 200, the total cost to reach the root from the indicated port would be 600, reflecting three hops from the root bridge​.

Detailed Explanation:The Type/Length field value of 0x0800 indicates that the upper-layer protocol is IPv4. However, the length of the IPv4 header can range from 20 to 60 bytes, not the length of the entire upper-layer packet. The field refers to the type of the encapsulated protocol, and the length is not constrained to the header alone​​.

Detailed Explanation:In LACP (Link Aggregation Control Protocol), the Actor is elected based on device priority, interface priority, and MAC address. These parameters ensure consistency and determine the active links within the aggregated trunk. The interface number alone is not a determining factor. (Reference: HCIA-Datacom Training Material, Link Aggregation Control Protocol (LACP))