Which of the following technologies enables port sharing on a single physical port?

WWPN (World Wide Port Name) is a globally unique 64-bit identifier assigned to a Fibre Channel port for identification and zoning purposes, not a mechanism for virtualizing or sharing a physical port.

NPIV (N_Port ID Virtualization) is a Fibre Channel facility that allows a single physical N_Port to register multiple virtual N_Port IDs with the SAN fabric, effectively multiplexing one physical port among several virtual machines or workloads and enabling flexible, scalable SAN zoning without requiring additional physical HBAs.

WWNN (World Wide Node Name) is a globally unique identifier assigned to a Fibre Channel node (HBA), used to identify the device in the fabric rather than to enable port-sharing or virtualization.

Port mapping is a generic networking term for associating logical ports with services or addresses and is not a defined Fibre Channel standard or feature that enables physical port virtualization.