XK0-005 Question #1126: Real Exam Question with Answer & Explanation

Question

A junior systems administrator created a new filesystem /dev/sda1 with mountpoint /data and added it to the /etc/fstab for auto-mounting. When the systems administrator tries to mount the file system, the system refuses. Given the output below: Which of the following steps is necessary?

Options

• AChange the filesystem from /dev/sda1 to /dev/sda2 and reboot.
• BChange the options to auto,dev,sync,rw,nosuid and run the mount -a command.
• CChange the mount point to data and reboot.
• DChange the dump column to 1 and run the mount -a command.

Explanation

When a newly added filesystem fails to mount from /etc/fstab, especially with a generic refusal error, troubleshooting often involves adjusting the mount options. Adding common options like auto for automatic mounting by mount -a, rw for read-write access, and dev to allow device special files can resolve conflicts or missing default settings that prevent mounting.

Common mistakes.

• A. Changing the device from /dev/sda1 to /dev/sda2 is arbitrary and does not address why /dev/sda1 failed to mount, assuming /dev/sda1 is the intended device.
• C. Changing the mount point from /data to data (which would mean a relative path, likely from /) would almost certainly fail or mount in an unintended location, and is not a common fix for a refusal to mount an existing mount point.
• D. The dump column in /etc/fstab is for backup utilities (specifying if the filesystem should be dumped by dump command) and has no bearing on whether the system can mount the filesystem.

Concept tested. Troubleshooting fstab mount issues

Reference. https://man7.org/linux/man-pages/man5/fstab.5.html

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