Which of the following features is enabled when using VSANs?

VSANs do not address the issue of firmware revisions; firmware updates typically apply to the entire physical switch.

While VSANs improve isolation and management, they do not inherently prevent a physical SAN switch from being a single point of failure; redundancy at the physical switch level (e.g., dual switches) is required for that.

VSANs enable the creation of multiple logical SANs on a single physical SAN switch, segmenting the fabric into isolated environments, similar to VLANs for Ethernet networks. Each VSAN operates as an independent fabric, with its own fabric services and isolated traffic, providing administrative and security separation.

The ability to route through all ports is a basic function of a switch and is not a specific feature enabled by VSANs; VSANs segment traffic, rather than enable universal routing.