Which statement about IP SAN data transmission is true?

• A. IP SAN uses Fibre Channel protocol for data transmission.
• B. IP SAN uses iSCSI protocol for data transmission.
• C. IP SAN can connect to FC SAN without any additional protocols.
• D. IP SAN cannot encapsulate SCSI commands.

Answer: (B)

IP SAN data transmission relies on moving SCSI commands over IP networks by using the iSCSI protocol. iSCSI wraps SCSI commands and responses in TCP segments, so they can travel over Ethernet or other IP networks and be reassembled at the destination. This is why the true statement is that IP SAN uses iSCSI for data transmission. The Fibre Channel protocol is a separate transport used by FC SANs, not the IP-based path. Bridging an IP SAN to an FC SAN without any additional protocols isn’t feasible, since IP and FC use different transport methods and require gateways or bridges to interoperate. And IP SAN does encapsulate SCSI commands via iSCSI, so saying it cannot encapsulate SCSI commands is incorrect.