Which of the following features is only supported on the Distributed Virtual Switch?

Link Aggregation with LACP (Link Aggregation Control Protocol) is a feature specific to the Distributed Virtual Switch (DVS) in VMware vSphere. This feature allows several physical network interfaces to be combined into a single logical channel, effectively increasing bandwidth and providing redundancy. It manages link aggregation automatically between switches and hosts for better load balancing and failover capabilities.

The Distributed Virtual Switch provides advanced networking features that are not available on the Standard Switch, which is where basic networking functionalities are implemented. LACP enhances network performance and reliability in larger, enterprise environments where distributed architecture is common.

Other features listed do not specifically require the capabilities provided by a Distributed Virtual Switch. For instance, while Network Address Translation, a Basic Firewall, and QoS Policies can be implemented on both standard and distributed switches, they lack the advanced aggregation and management capabilities that LACP brings on the Distributed Virtual Switch.