Which protocol is primarily used for block storage access?

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Multiple Choice

Which protocol is primarily used for block storage access?

Explanation:
Block storage access means presenting raw storage blocks to a server so it can perform standard disk I/O as if the storage were directly attached. The protocol that makes this possible over an IP network is iSCSI, which carries SCSI commands over TCP/IP. This lets a storage array expose LUNs (logical unit numbers) to a host, and the host sees them as local disks. NFS and CIFS (SMB) operate at the file level, exposing files and directories rather than raw blocks, so they aren’t the right fit for block storage. HTTP is designed for web transfers and isn’t used to present block devices. So iSCSI is the best choice for block storage access.

Block storage access means presenting raw storage blocks to a server so it can perform standard disk I/O as if the storage were directly attached. The protocol that makes this possible over an IP network is iSCSI, which carries SCSI commands over TCP/IP. This lets a storage array expose LUNs (logical unit numbers) to a host, and the host sees them as local disks. NFS and CIFS (SMB) operate at the file level, exposing files and directories rather than raw blocks, so they aren’t the right fit for block storage. HTTP is designed for web transfers and isn’t used to present block devices. So iSCSI is the best choice for block storage access.

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