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| Section | Objectives |
|---|---|
| Topic 1: Operate running systems | - Interrupt the boot process - Boot systems into different targets - Process scheduling - Boot, reboot, and shut down systems - Tuning profiles - Secure file transfer - Network services - System logs and journals - Process monitoring and termination |
| Topic 2: Manage users and groups | - Password and password aging management - Privileged access configuration - Local user account management - Local group management |
| Topic 3: Configure local storage | - Physical volumes - GPT disk partitions - Logical volumes - Volume groups - Adding partitions, logical volumes, and swap - File system mounting using UUID or labels |
| Topic 4: Manage basic networking | - Hostname resolution - Firewall configuration with firewalld and firewall-cmd - Network services at boot - IPv4 and IPv6 configuration |
| Topic 5: Deploy, configure, and maintain systems | - Software installation and updates - Default boot target configuration - Time service clients - Service management - Task scheduling with at, cron, and systemd timers - Bootloader configuration |
| Topic 6: Manage security | - SELinux file and process contexts - SELinux file context restoration - Default file permissions - SELinux enforcing and permissive modes - SSH key-based authentication - SELinux Boolean settings - Firewall configuration - SELinux port labels |
| Topic 7: Understand and use essential tools | - File archiving and compression - Remote system access using SSH - Hard and soft links - File permissions - File and directory management - System documentation - Users and multi-user targets - Creating and editing text files - Input and output redirection - Text analysis with grep and regular expressions - Shell access and command syntax |
| Topic 8: Create and configure file systems | - VFAT, ext4, and XFS file systems - File permission troubleshooting - NFS file systems - Extending logical volumes - Autofs |
| Topic 9: Manage software | - Install and remove Flatpak packages - Configure RPM repositories - Install and remove RPM packages - Configure Flatpak repositories |
| Topic 10: Create simple shell scripts | - Conditional execution - Looping constructs - Processing command output - Processing script inputs |
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NEW QUESTION # 22
Enable periodic TRIM operations for supported file systems.
Answer:
Explanation:
See the solution below in Explanation.
Explanation:
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 )
NEW QUESTION # 23
One Package named zsh is dump on ftp://server1.example.com under /pub/updates directory and your FTP server is 192.168.0.254. Install the package zsh.
Answer:
Explanation:
rpm -ivh ftp://server1/example.com/pub/updates/zsh-*
or
Login to ftp server : ftp ftp://server1.example.com using anonymous user.
Change the directory: cd pub and cd updates
Download the package: mget zsh-*
Quit from the ftp prompt : bye
Install the package
rpm -ivh zsh-*
Verify either package is installed or not : rpm -q zsh
NEW QUESTION # 24
SIMULATION
Configure your NFS services. Share the directory by the NFS Shared services.
Answer:
Explanation:
See explanation below.
Explanation/Reference:
Explanation: /etc/init.d/rpcbind start
/etc/init.d/nfslock start
/etc/init.d/nfs start
chkconfig rpcbind on
chkconfig nfslock on
chkconfig nfs on
showmount -e localhost
NEW QUESTION # 25
SIMULATION
In the system, mounted the iso image /root/examine.iso to/mnt/iso directory. And enable automatically mount (permanent mount) after restart system.
Answer:
Explanation:
See explanation below.
Explanation/Reference:
Explanation:
/etc/fstab:
/root/examine.iso /mnt/iso iso9660 loop 0 0 mount -a
mount | grep examine
NEW QUESTION # 26
You are new System Administrator and from now you are going to handle the system and your main task is Network monitoring, Backup and Restore. But you don't know the root password. Change the root password to redhat and login in default Runlevel.
Answer:
Explanation:
see explanation below.
Explanation
When you Boot the System, it starts on default Runlevel specified in /etc/inittab:
Id:?:initdefault:
When System Successfully boot, it will ask for username and password. But you don't know the root's password. To change the root password you need to boot the system into single user mode. You can pass the kernel arguments from the boot loader.
1. Restart the System.
2. You will get the boot loader GRUB screen.
3. Press a and type 1 or s for single mode ro root=LABEL=/ rhgb queit s
4. System will boot on Single User mode.
5. Use passwd command to change.
6. Press ctrl+d
NEW QUESTION # 27
......
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