LFCS Question #779: Real Exam Question with Answer & Explanation

Question

An administrator has just added a CD-ROM drive (/dev/hdd) to a system and added it to the administrator's fstab. Typically the administrator can use which of the following commands to mount media in that drive to /mnt/cdrom?

Options

• Amount /dev/cdrom /mnt/cdrom
• Bmount /dev/cdrom
• Cmount -t cdrom /dev/cdrom /mnt/cdrom
• Dmount /mnt/cdrom
• Eautomount /mnt/hdd /mnt/cdrom}

Explanation

When a filesystem is correctly defined in /etc/fstab, it can be mounted by simply specifying its designated mount point.

Common mistakes.

• A. This command specifies both the device and mount point; while it would work, it bypasses the convenience of fstab and uses a generic /dev/cdrom which might not be the specific device /dev/hdd.
• B. This command only specifies the device; without a mount point, mount would attempt to mount to a default location (often a temporary directory) or fail, not /mnt/cdrom as intended via fstab.
• C. This command explicitly defines the filesystem type and both device and mount point, which is redundant if fstab is already configured for the mount.
• E. automount refers to the autofs service for automatic mounts and is not the command used for manually mounting an fstab entry; /mnt/hdd is also an incorrect device path.

Concept tested. Mounting filesystems with fstab

Reference. https://man7.org/linux/man-pages/man8/mount.8.html

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