Which of the following storage protocols would be suitable for transport across an IP network?

SAS (Serial Attached SCSI) is a point-to-point serial protocol used for connecting storage devices directly to a host adapter, not for network transport.

SCSI (Small Computer System Interface) is a parallel or serial interface standard for connecting and transferring data between computers and peripheral devices, but it's a local bus technology, not a network protocol by itself.

iSCSI (Internet Small Computer System Interface) is specifically designed to encapsulate SCSI commands and transmit them over standard TCP/IP networks, making it suitable for block-level storage access over IP.

SATA (Serial Advanced Technology Attachment) is a serial interface primarily used for connecting storage devices like hard drives and SSDs directly to a computer's motherboard, not for network transport.