最新的RedHat Red Hat Certified System Administrator - RHCSA - EX200免費考試真題

Solution:
# Connect to servera via console for IP modification, then check using the ip addr command.
# After confirming no issues, SSH to servera for hostname modification. This way, you can copy the hostname to avoid typos.
[root@clear ~] nmcli con show
[root@clear ~] nmcli con mod 'network configuration name' ipv4.method manual ipv4.addresses 172.25.0.25/24 ipv4.gateway 172.25.0.254 ipv4.dns 172.25.0.254
autoconnect yes
[root@clear ~] nmcli con up 'network configuration name'
[root@clear ~] ip a
[root@clear ~] ssh [email protected]
[root@clear ~] hostnamectl set-hostname red.lab0.example.com
# Verification
[root@node1 ~] ip a //Check if the IP is correct
[root@node1 ~] hostname //Check if the hostname is correct

Solution:
[root@node1 ~]# groupadd sysmgrs
[root@node1 ~]# useradd -G sysmgrs natasha
[root@node1 ~]# useradd -G sysmgrs harry
[root@node1 ~]# useradd -s /bin/false sarah
[root@node1 ~]# echo tianyun |passwd --stdin natasha
[root@node1 ~]# echo tianyun |passwd --stdin harry
[root@node1 ~]# echo tianyun |passwd --stdin sarah

See the solution below in Explanation.
Explanation:
Solution:
groupadd admin
mkdir -p /common/admin
chgrp admin /common/admin
chmod 2770 /common/admin
Detailed Explanation:
* groupadd admin creates the group.
* chgrp admin assigns the group ownership.
* 2770 means:
* 2 = SGID
* 7 = owner rwx
* 7 = group rwx
* 0 = others no access
* This is a standard shared group-admin directory design.

See the solution below in Explanation.
Explanation:
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:
***Restart the node2 machine and wait for the screen shown in Exhibit 1.

Press "e" to enter the screen shown in Exhibit 2.

The original configuration is as shown in the image. Modify the original configuration to the part highlighted in red box, as shown in Exhibit 2. Then press "Ctrl+X" to
execute the following commands:
# chroot /sysroot
# echo redhat |passwd --stdin root
# touch /.autorelabel
# sync
# exit
# reboot

See the solution below in Explanation.
Explanation:
Solution:
echo "john" > > /etc/cron.deny
Detailed Explanation:
* cron.deny blocks listed users from using cron.
* This is the simplest way to deny scheduled-job access for one user.

Solution:
# Install container management tools
[root@node1 ~]# dnf -y install container-tools
# Execute operations as the user wallah
[root@node1 ~]# ssh wallah@localhost
# Download the container build file
[wallah@node1 ~]# wget http://classroom/Containerfile
# Log in to the image registry
[wallah@node1 ~]# podman login -u admin -p redhat321 registry.lab.example.com
# Build the container image using the Containerfile in the current directory, with the image name "pdf"
[wallah@node1 ~]# podman build -t pdf .
# View the images
[wallah@node1 ~]$ podman images
REPOSITORY TAG IMAGE ID CREATED SIZE
localhost/pdf latest 1d6e7ea71460 31 seconds ago 300 MB
registry.lab.example.com/ubi9-beta/ubi latest 28b0a4b69d9b 2 years ago 229 MB