RedHat Updated EX200 Exam Questions and Answers by jade

Solution:

mkdir -p /backup

tar -cvf /root/logs.tar /var/log

tar -xvf /root/logs.tar -C /backup

Detailed Explanation:

tar -cvf creates an uncompressed archive.

tar -xvf extracts the archive.

-C /backup tells tar where to extract the files.

This is a common RHCSA-style archive and restore task.

Solution:

systemctl enable --now fstrim.timer

systemctl status fstrim.timer

Detailed Explanation:

fstrim.timer schedules discard of unused blocks.

This is useful on SSD-backed storage and thin-provisioned environments.

RHEL 10 storage documentation explicitly documents enabling fstrim.timer. ( Red Hat Documentation )

Solution:

pvcreate /dev/sdb3

vgcreate -s 16M VG1 /dev/sdb3

lvcreate -l 30 -n LV1 VG1

mkfs.ext4 /dev/VG1/LV1

Detailed Explanation:

vgcreate -s 16M sets PE size to 16 MB.

lvcreate -l 30 allocates 30 extents.

30 × 16 MB = 480 MB total LV size.

mkfs.ext4 creates the filesystem.

Solution:

Create the swap partition:

fdisk /dev/sdb

partprobe /dev/sdb

Format it for swap:

mkswap /dev/sdb2

Enable it:

swapon /dev/sdb2

Persist it in /etc/fstab:

echo "/dev/sdb2 swap swap defaults 0 0" > > /etc/fstab

Verify:

swapon --show

Detailed Explanation:

mkswap prepares the partition as swap space.

swapon activates it immediately.

Adding an /etc/fstab entry ensures it survives reboot.

The lab uses a partition-based swap workflow.