Which of the following protocols would be used on a host to access network share called \\server1.chicago.net\data?

FCoE (Fibre Channel over Ethernet) is a storage networking protocol for block-level data, not for accessing network file shares.

CIFS (Common Internet File System), also known as SMB (Server Message Block), is the protocol used by Windows clients to access shared files and printers over a network. The `\servername\sharename` format is characteristic of SMB/CIFS shares.

FC (Fibre Channel) is a high-speed networking technology primarily used for block-level storage access in Storage Area Networks, not for accessing file shares.

iSCSI (Internet Small Computer System Interface) is a block-level storage protocol that maps SCSI commands over TCP/IP, primarily for accessing storage devices, not for network file shares.