RedHat EX200 Dumps

Solution:

systemctl set-default multi-user.target

systemctl get-default

Detailed Explanation:

set-default changes the boot target persistently.

get-default verifies the result.

multi-user.target is the standard non-graphical multi-user boot target.

Solution:

mkdir -p /share/projects

chown alex /share/projects/

chmod a+rwx,+t /share/projects/

ls -ld /share/projects/

Detailed Explanation:

chmod a+rwx gives read, write, and execute to everyone.

+t sets the sticky bit.

Sticky bit on a shared directory means users can create files, but only the file owner, directory owner, or root can delete them.

This is the same model used on /tmp.

Solution:

Partition the disk:

fdisk /dev/sdb

Inside fdisk:

n = new partition

p = primary

1 = partition number

accept defaults

size +700M

t = change type

set Linux LVM type

w = write changes

Create the physical volume:

pvcreate /dev/sdb1

Create the volume group:

vgcreate vg_data /dev/sdb1

Create the logical volume:

lvcreate -L 500M -n lv_data vg_data

Create the filesystem:

mkfs.xfs /dev/vg_data/lv_data

Detailed Explanation:

The lab specifies a 700 MB partition and a 500 MB logical volume.

pvcreate initializes the partition for LVM.

vgcreate builds the storage pool.

lvcreate allocates space from the volume group.

mkfs.xfs creates the filesystem, which is standard on RHEL.

Solution:

tar -zvcf /root/etc_backup.tar.gz /etc

file /root/etc_backup.tar.gz

Detailed Explanation:

tar creates the archive.

-z uses gzip compression.

-v is verbose.

-c creates the archive.

-f names the output file.

file confirms the resulting archive type.

Solution:

stratis filesystem snapshot pool1 fs1 fs1-snap

stratis filesystem list

Detailed Explanation:

This creates a snapshot of the existing Stratis file system.

Snapshots are useful for rollback, backup, and testing operations.

Stratis features, including pool and file-system management, are part of RHEL 10 file-system administration. ( Red Hat Documentation )

Solution:

dnf install -y autofs

mkdir -p /shares

echo "/shares /etc/auto.shares" > > /etc/auto.master

echo "projects -fstype=nfs,rw server1:/srv/nfs/projects" > /etc/auto.shares

systemctl enable --now autofs

ls /shares/projects

Detailed Explanation:

/etc/auto.master defines the main map.

/etc/auto.shares defines the indirect mount entry.

The mount happens on demand when /shares/projects is accessed.

RHEL 10 file-system documentation includes AutoFS for on-demand mounts. ( Red Hat Documentation )

Solution:

firewall-cmd --permanent --add-service=http

firewall-cmd --reload

firewall-cmd --list-services

Detailed Explanation:

--permanent saves the rule.

--reload applies it.

--list-services verifies the active configuration.

Firewalld remains the standard firewall interface in RHEL 10. ( Red Hat Documentation )

Solution:

podman pull registry.access.redhat.com/ubi10/ubi

podman run -d --name webtest registry.access.redhat.com/ubi10/ubi sleep 3600

podman ps

Detailed Explanation:

podman pull downloads the image.

podman run -d starts the container in the background.

Rootless Podman is a normal RHEL container workflow.

RHEL 10 container documentation continues to center on Podman for image and container management. ( Red Hat Documentation )

Solution:

useradd harry

passwd harry

chage -M 30 -d 0 harry

chage -l harry

Detailed Explanation:

useradd harry creates the local user.

passwd harry sets the initial password.

chage -M 30 sets the maximum password age to 30 days.

chage -d 0 forces the user to change the password at next login.

chage -l harry verifies the policy.

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:

dnf install -y tuned

systemctl enable --now tuned

tuned-adm recommend

tuned-adm profile virtual-guest

tuned-adm active

Detailed Explanation:

The lab text uses yum, but on RHEL 10 dnf is the preferred package manager command. RHEL 10 documentation focuses on DNF behavior and changes.

tuned-adm recommend shows the best-fit tuning profile.

tuned-adm profile virtual-guest activates the profile.

tuned-adm active confirms it.

Solution:

dnf install -y httpd policycoreutils-python-utils

mkdir -p /webdata

echo "RHEL10 Web Server" > /webdata/index.html

sed -i 's/^Listen 80/Listen 8080/' /etc/httpd/conf/httpd.conf

semanage port -a -t http_port_t -p tcp 8080

firewall-cmd --permanent --add-port=8080/tcp

firewall-cmd --reload

systemctl enable --now httpd

systemctl restart httpd

ss -tulpn | grep 8080

Detailed Explanation:

Apache defaults to port 80, so Listen 8080 changes the service port.

SELinux must allow Apache to bind to 8080, which is done with semanage port.

firewall-cmd opens the port externally.

RHEL 10 documents firewalld as the standard firewall management interface and SELinux port labeling for confined services. ( Red Hat Documentation )