Question 20
A branch design for Willowbrook Transit has two requirements: (1) discover a neighboring Cisco switch's device name and management address, and (2) advertise basic device identity to a multivendor adjacent device. Which plan correctly handles both requirements?
Explanation
Correct Answer
Both outcomes are covered: (1) CDP exchanges Cisco neighbor information at Layer 2, including platform and management identifiers. (2) LLDP is a vendor-neutral Layer 2 discovery protocol that advertises neighbor identity and capabilities. Neither action is a substitute for the other.
Incorrect Answers
The second step covers (2), but the first addresses prevent a downstream switch from claiming the root role over an uplink. Root Guard holds the port in a root-inconsistent state if superior BPDUs arrive. It leaves outcome (1) unfulfilled.
The first step covers (1), but the second addresses keep an aggregated trunk's VLAN policy consistent. The logical port-channel is the switching interface whose member ports must have compatible settings. It leaves outcome (2) unfulfilled.
Neither step is the requested pair: Configure controller-supported link aggregation with the corresponding switch port-channel is for aggregate WLC uplinks for bandwidth and resilience, and Consider FlexConnect operation on supported APs is for support a remote site that cannot always reach the controller. A compatible aggregated uplink spreads supported traffic across multiple physical links. The proposed plan misses the two stated outcomes.