An iSCSI or FC SAN implementation provides _____ access to LUNs.

• A. block
• B. file
• C. VIIP
• D. VLD

Answer: (A)

Block-level access is what iSCSI and FC SAN transport to servers. These storage networks present each LUN as a raw block device, meaning the host interacts with fixed-size blocks and then may format the LUN with a filesystem or use it as raw block storage for applications. This is different from file-level access, where data is accessed as files and directories over NAS protocols like NFS or SMB. So the LUNs provided by iSCSI or FC SAN are blocks that the host can manage with its own filesystem or database, not files themselves. The other terms listed don’t describe this access model.