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| Section | Weight | Objectives |
|---|---|---|
| Manage users and groups | 10% | - Create, delete, modify users and groups - Configure SSH key-based authentication - Manage password policies and sudo access |
| Deploy, configure, and maintain systems | 15% | - Configure firewalld firewall rules - Manage software packages with DNF/YUM - Manage network interfaces and settings with NetworkManager/nmcli |
| Understand and use essential tools | 25% | - Archive, compress, unpack files using tar, gzip, bzip2 - Use grep and regular expressions - Use input-output redirection - Access shell prompt and issue commands with correct syntax - Create/edit text files; manage files, directories, links, permissions - Access remote systems via SSH |
| Manage security | 10% | - Enforce SELinux modes, contexts, booleans, and port labeling - Restore file contexts and troubleshoot SELinux issues |
| Configure local storage | 15% | - Create and manage LVM physical volumes, volume groups, logical volumes - List, create, delete partitions and GPT/MBR layouts - Configure swap space |
| Perform basic shell scripting | - Use conditional statements, loops, and script inputs | |
| Operate running systems | 20% | - Manage logging and journaling - Manage networking and network services - Boot systems into different targets; manage systemd units - Schedule tasks using cron and at - Maintain accurate system time with chrony |
| Create and configure file systems | 15% | - Manage access control lists (ACLs) - Maintain entries in /etc/fstab using UUID or labels - Mount and manage network file systems (NFS, autofs) - Create and mount XFS, ext4, VFAT file systems |
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16. Frage
SIMULATION
Make on /archive directory that only the user owner and group owner member can fully access.
Antwort:
Begründung:
See explanation below.
Explanation/Reference:
Explanation:
chmod 770 /archive
Verify using : ls -ld /archive Preview should be like:
drwxrwx--- 2 root sysuser 4096 Mar 16 18:08 /archive
To change the permission on directory we use the chmod command. According to the question that only the owner user (root) and group member (sysuser) can fully access the directory so: chmod 770 /archive
17. Frage
Your System is configured in 192.168.0.0/24 Network and your nameserver is 192.168.0.254. Make successfully resolve to server1.example.com.
Antwort:
Begründung:
see explanation below.
Explanation
nameserver is specified in question,
1. Vi /etc/resolv.conf
nameserver 192.168.0.254
2. host server1.example.com
18. Frage
Configure the system hostname and configure a static IP address on the existing NetworkManager connection.
Antwort:
Begründung:
See the solution below in Explanation.
Explanation:
Solution:
* Set the hostname:
hostnamectl set-hostname server1.example.com
* Configure the existing connection with a static IP:
nmcli connection modify ens160 ipv4.address 192.168.1.2/24 ipv4.gateway 192.168.1.1 ipv4.dns 1.1.1.1 ipv4.
method manual connection.autoconnect yes
* Bring the connection up:
nmcli connection up ens160
Detailed Explanation:
* hostnamectl is the correct modern command for changing the system hostname.
* nmcli is the correct tool for RHEL 10 network configuration because the old ifcfg style is removed in
RHEL 10, and NetworkManager keyfiles are the supported model.
* ipv4.method manual tells NetworkManager to use static addressing.
* connection.autoconnect yes ensures the profile activates automatically after reboot.
* nmcli connection up ens160 applies the changes immediately.
19. Frage
24. Adjust Logical Volume Size
Adjust the size of the logical volume "vo" and its filesystem to 300 MiB, ensuring that the filesystem content remains unchanged.
Note: Partition sizes rarely match the requested size exactly, so a range of 290 MiB to 310 MiB is acceptable.
For ext4 filesystems, use resize2fs to take effect immediately; for xfs filesystems, use xfs_growfs to take effect immediately.
Antwort:
Begründung:
Solution:
# Scan logical volumes
[root@node2 ~]# lvscan
# Extend the logical volume. With -rL, the filesystem space is adjusted immediately after extending the volume.
[root@node2 ~]# lvextend -rL 300M /dev/myvol/vo
# Check the changes
[root@node2 ~]# lsblk
[root@node2 ~]# lvs
# Verification
[root@node2 ~]# df -h
20. Frage
07. Configure NTP
Configure your system to synchronize with the NTP server of materials.example.com (Note: materials.example.com is an alias for classroom.example.com).
Antwort:
Begründung:
Solution:
# Install the chrony service for configuring NTP server
[root@node1 ~]# yum -y install chrony
[root@node1 ~]# vim /etc/chrony.conf
server materials.example.com iburst
[root@node1 ~]# systemctl restart chronyd
[root@node1 ~]# systemctl enable chronyd
# Check
# Set an arbitrary time
[root@node1 ~]# date -s "1982-1-1"
Fri Jan 1 12:00:00 AM EST 1982
# Restart the NTP server
[root@node1 ~]# systemctl restart chronyd
# Check if the time is synchronized
# Execute after 3-5 seconds, too fast won't synchronize the time
[root@node1 ~]# date
Tue Dec 12 11:40:19 PM EST 2023
# Use the chronyc command to check synchronization status
[root@node1 ~]# chronyc sources -v
.-- Source mode '
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