What does iSCSI allow for in networking?

iSCSI, which stands for Internet Small Computer Systems Interface, is a protocol designed to facilitate the transmission of SCSI (Small Computer System Interface) commands over IP networks. This capability allows data storage and retrieval commands typically used in storage area networks (SANs) to be encapsulated within standard TCP/IP packets, enabling communication and data transfer over existing network infrastructure.

By using iSCSI, organizations can create a SAN using standard Ethernet hardware, which can lead to cost-effective storage solutions. This protocol supports long-distance data transfer, making it applicable for remote storage needs. It effectively integrates storage management with traditional IP networking, allowing for efficient utilization of bandwidth and resources.

The other options describe concepts that do not relate to the primary function of iSCSI. An Ethernet standard refers to physical and data link layer protocols for networking, which is unrelated to the SCSI command structure. Wireless data transfer methods pertain to communication technologies that do not specifically involve SCSI command sets or IP networking. Bypass technologies for firewalls involve network security procedures that do not connect to the functionality provided by iSCSI. Therefore, the primary and correct function of iSCSI is indeed the encapsulation of SCSI commands for transmission over IP networks.