A Linux administrator is configuring a server that uses an external USB drive for daily backups. The drive is listed in /etc/fstab to be mounted automatically at boot. To prevent boot failures when the USB drive is not connected, which mount option should the administrator add to the corresponding entry in /etc/fstab?
nofail
remount
nodev
auto
The correct option is nofail. This option instructs the system not to report errors for this device if it does not exist, allowing the boot process to continue without interruption. The auto option, which is a default setting, will cause the system to attempt to mount the filesystem at boot, which can lead to delays or entry into emergency mode if the device is not present. The remount option is used to change the mount properties of an already mounted filesystem and is not used for initial mounting at boot. The nodev option is a security measure that prevents the interpretation of character or block special devices on the filesystem and does not relate to handling mount failures.
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