Which of the following is considered a SAN protocol?

The choice of FCP (Fibre Channel Protocol) as a SAN (Storage Area Network) protocol is accurate because FCP is specifically designed for transferring data between servers and storage devices over Fibre Channel networks. This protocol allows for block-level storage to be accessed at high speeds, making it an integral part of SAN architectures.

FCP facilitates communication in a SAN environment, where multiple servers can connect to storage resources, enabling efficient data management and enhanced performance. Its design allows for features such as high throughput and low latency, which are critical in enterprise storage infrastructures where high availability and reliability are important.

The other options do not pertain to SAN protocols. IDE (Integrated Drive Electronics) is primarily a standard for connecting storage devices within a computer, not a networked storage solution. SSD (Solid State Drive) refers to a type of storage hardware, which can be used in SANs but is not a protocol itself. DTE (Data Terminal Equipment) typically refers to devices that transmit or receive communication data but is unrelated to SAN protocols. Thus, FCP is the only correct answer that fits the category of SAN protocol.