Which of the following is a characteristic of dynamic EtherChannel?

Dynamic EtherChannel is characterized by its ability to automate the negotiation of link bundling between switches. This is achieved through protocols like LACP (Link Aggregation Control Protocol), which allows multiple physical links to work together as a single logical link. By automating this process, network administrators can simplify the configuration and management of EtherChannel connections, as the protocol actively manages the links to ensure optimal performance and redundancy.

This automation reduces the potential for misconfigurations that can occur with static configurations, where changes or adjustments would need to be made manually. In addition to simplifying setup, dynamic EtherChannel enhances network resilience by allowing the network devices to negotiate which links should be active based on their availability, thereby improving load balancing and failover capabilities.

In contrast to this characteristic, other options point to limitations or manual configurations that do not accurately describe the dynamic nature of this technology.