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| Section | Objectives |
|---|---|
| Operate running systems | - Secure file transfer - Boot systems into different targets - Tuning profiles - Network services - System logs and journals - Process monitoring and termination - Process scheduling - Interrupt the boot process - Boot, reboot, and shut down systems |
| Configure local storage | - Logical volumes - GPT disk partitions - Physical volumes - Volume groups - Adding partitions, logical volumes, and swap - File system mounting using UUID or labels |
| Create and configure file systems | - File permission troubleshooting - VFAT, ext4, and XFS file systems - Autofs - Extending logical volumes - NFS file systems |
| Create simple shell scripts | - Processing command output - Conditional execution - Looping constructs - Processing script inputs |
| Manage security | - SELinux file and process contexts - SELinux enforcing and permissive modes - Firewall configuration - SELinux Boolean settings - Default file permissions - SSH key-based authentication - SELinux file context restoration - SELinux port labels |
| Understand and use essential tools | - Users and multi-user targets - File and directory management - File archiving and compression - Hard and soft links - System documentation - Input and output redirection - Text analysis with grep and regular expressions - File permissions - Creating and editing text files - Remote system access using SSH - Shell access and command syntax |
| Manage software | - Install and remove Flatpak packages - Install and remove RPM packages - Configure RPM repositories - Configure Flatpak repositories |
| Manage basic networking | - Network services at boot - Firewall configuration with firewalld and firewall-cmd - IPv4 and IPv6 configuration - Hostname resolution |
| Manage users and groups | - Password and password aging management - Local user account management - Privileged access configuration - Local group management |
| Deploy, configure, and maintain systems | - Service management - Software installation and updates - Task scheduling with at, cron, and systemd timers - Time service clients - Bootloader configuration - Default boot target configuration |
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59. Frage
Binding to an external validation server.
System server.domain11.example.com provides a LDAP validation service, your system should bind to this service as required:
Base DN of validation service is dc=example,dc=com
LDAP is used for providing account information and validation information Connecting and using the certification of http://server.domain11.example.com/pub/EXAMPLE-CA-CERT to encrypt After the correct configuration, ldapuser1 can log into your system, it does not have HOME directory until you finish autofs questions, ldapuser1 password is password.
Antwort:
Begründung:
yum -y install sssd authconfig-gtk krb5-workstation authconfig-gtk // open the graphical interface Modify user account database to ldap, fill up DN and LDAP SERVER as questions required, use TLS to encrypt connections making tick, write http://server.domain11.example.com/pub/EXAMPLE-CA-CERT to download ca, authentication method choose ldap password.
You can test if the ldapuser is added by the following command:
Id ldapuser1
Note: user password doesn't not need to set
60. Frage
20. Set the default UMASK for user-created files
For the user natasha:
* The default permission for newly created files should be r--r--r--
* The default permission for newly created directories should be r-xr-xr-x
Antwort:
Begründung:
Solution:
# su - natasha
Write the umask setting into the user's .bashrc file in the home directory:
bash
Copy code
echo 'umask 222' >> .bashrc
source .bashrc
Command explanation:
umask is used to control the default permissions for files and directories created by a user.
In umask:
The first digit is for special permissions and is usually 0 (can be omitted if not needed).
The second digit controls owner permissions.
The third digit controls group permissions.
The fourth digit controls permissions for others.
61. Frage
Which of the following statements are true about Jenkins? (Choose two correct answers.)
Antwort: A,D
62. Frage
Pull the registry.access.redhat.com/ubi10/ubi image and run a rootless container named webtest that executes
sleep 3600.
Antwort:
Begründung:
See the solution below in Explanation.
Explanation:
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 )
63. Frage
Create a collaborative directory/home/admins with the following characteristics:
Group ownership of /home/admins is adminuser
The directory should be readable, writable, and accessible to members of adminuser, but not to any other user.
(It is understood that root has access to all files and directories on the system.) Files created in /home/admins automatically have group ownership set to the adminuser group
Antwort:
Begründung:
see explanation below.
Explanation
mkdir /home/admins
chgrp -R adminuser /home/admins
chmodg+w /home/admins
chmodg+s /home/admins
64. Frage
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