RHCSA RHCSA Filesystem and Mount Configuration 4

Question 1

Which command adds a label 'BACKUP' to an ext4 filesystem on /dev/sdb1?

Accepted Answer

tune2fs -L BACKUP /dev/sdb1

Answer

tune2fs -L sets or changes the filesystem label on an existing ext4 filesystem without reformatting.

Question 2

A mount point /mnt/data has the 'nofail' option in /etc/fstab. What happens if the device is absent at boot?

Accepted Answer

The system boots normally and skips mounting that entry

Answer

nofail tells systemd not to fail the boot if this mount cannot be completed, allowing the system to continue booting.

Question 3

Which command mounts all filesystems listed in /etc/fstab that are not currently mounted?

Accepted Answer

mount -a

Answer

mount -a reads /etc/fstab and attempts to mount all filesystems that have the 'auto' option and are not already mounted.

Question 4

What does the fifth field (dump) in an /etc/fstab entry control?

Accepted Answer

Whether the dump backup utility backs up the filesystem

Answer

The dump field (0 or 1) tells the legacy dump utility whether to include this filesystem in backups; 0 means skip.

Question 5

Which command shows all currently mounted filesystems along with their mount options?

Accepted Answer

findmnt

Answer

findmnt displays all mounted filesystems in a tree format including mount options, source, and type.

RHCSA Exam Practice Test