RHCE Storage and File Systems

Question 1

Which command is used to create a physical volume in LVM?

Accepted Answer

pvcreate

Answer

The `pvcreate` command initializes a disk or partition as an LVM physical volume.

Question 2

What file system type is recommended by Red Hat for XFS journaling on RHEL 8+?

Accepted Answer

xfs

Answer

XFS is the default and recommended file system for RHEL 8 and later due to its performance and scalability.

Question 3

Which command displays the disk usage of a mounted file system in human-readable format?

Accepted Answer

df -h

Answer

`df -h` reports file system disk space usage in human-readable units like GB and MB.

Question 4

Which LVM command extends an existing logical volume by 2GB?

Accepted Answer

lvextend -L +2G /dev/vg0/lv0

Answer

`lvextend -L +2G` increases the size of a logical volume by the specified amount.

Question 5

What is the purpose of the `/etc/fstab` file?

Accepted Answer

Defines file systems to mount at boot

Answer

The `/etc/fstab` file contains static information about file systems and is read at boot to mount them automatically.

RHCE - Red Hat Certified Engineer Practice Test