Refer to the exhibit. A network engineer is migrating the existing switching infrastructure to a proposed model. Which technology is enabled on the Cisco Nexus switches to support this migration to…

Port Aggregation Protocol (PAgP) is a Cisco proprietary protocol for negotiating EtherChannels between a single pair of devices and does not provide multi-chassis link aggregation for redundancy across two separate switches.

Virtual Switching System (VSS) is a Cisco technology primarily used on Catalyst switches to combine two physical switches into one logical switch, but it is not typically used on Nexus switches for this purpose.

Virtual Port-Channel (vPC) is a virtualization technology on Cisco Nexus switches that allows two Nexus switches to act as a single logical switch for downstream devices. This enables active-active EtherChannel connections from servers to both Nexus switches, eliminating spanning tree blocked ports and providing high bandwidth and resiliency in a data center migration.

Fibre Channel over Ethernet (FCoE) is a technology for encapsulating Fibre Channel frames over Ethernet and is used for storage networking convergence, not for general switching infrastructure migration or multi-chassis link aggregation.