What is Fibre Channel (FC) zoning used for in SANs?

Fibre Channel zoning is utilized primarily for the management of access and connectivity within Storage Area Networks (SANs). Zoning allows administrators to define which devices (such as servers and storage devices) can communicate with each other within the Fibre Channel network. This capability is crucial for enhancing security and reducing the risk of unauthorized access. By creating zones, administrators can effectively isolate traffic, ensuring that only designated devices can interact with each other. This not only simplifies management but also helps in troubleshooting connectivity issues, optimizing performance, and enforcing security policies across the SAN environment.

The other options do not accurately represent the primary function of Fibre Channel zoning. Data encryption in transit pertains to securing data as it moves through the network, while user session management and resource allocation settings are related to performance and usage but do not directly relate to zoning's role in access and connectivity management.