Which file stores the export rules for directories and volumes in a storage system?

Which file stores the export rules for directories and volumes in a storage system?

• A. /etc/exports
• B. /etc/exports.conf
• C. /etc/exports.d
• D. /etc/fstab

Answer: (A)

Export rules determine which directories and volumes are shared over NFS and with what access. In this storage system, those rules are kept in the /etc/exports file. Each entry specifies a path (such as a volume under /vol) and the client networks or hosts allowed to mount it, along with options like rw or ro, and root_squash or no_root_squash. The NFS server reads this file to decide whether a mount should be allowed and under what permissions. Other files aren’t used to store NFS export definitions: /etc/fstab is for mounting local filesystems at boot, /etc/exports.conf isn’t the standard location for export rules, and while some systems use /etc/exports.d to split exports, the canonical storage system location for these rules is /etc/exports.

Export rules determine which directories and volumes are shared over NFS and with what access. In this storage system, those rules are kept in the /etc/exports file. Each entry specifies a path (such as a volume under /vol) and the client networks or hosts allowed to mount it, along with options like rw or ro, and root_squash or no_root_squash. The NFS server reads this file to decide whether a mount should be allowed and under what permissions. Other files aren’t used to store NFS export definitions: /etc/fstab is for mounting local filesystems at boot, /etc/exports.conf isn’t the standard location for export rules, and while some systems use /etc/exports.d to split exports, the canonical storage system location for these rules is /etc/exports.