Which of the following uses a switching fabric to connect storage LUNs to hosts?

Fiber Channel (FC) is a networking technology that leverages a switching fabric, composed of FC switches, to provide high-speed connectivity between host servers and shared storage LUNs. This allows multiple hosts to access shared storage resources efficiently.

SCSI is a protocol used for communicating with storage devices, not a network technology that inherently uses a switching fabric to connect multiple hosts to LUNs.

SATA is an interface primarily for connecting individual storage devices directly to a host system, and it does not use a switching fabric for host-LUN connectivity.

While Ethernet can be used for storage networking via protocols like iSCSI, Fiber Channel is explicitly designed around the concept of a dedicated storage switching fabric for LUN connectivity.