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| Section | Objectives |
|---|---|
| Topic 1: Manage security | - Use Boolean settings to modify SELinux settings - Manage default file permissions - Set enforcing and permissive modes for SELinux - List and identify SELinux file and process contexts - Restore default file contexts - Configure firewall settings using firewall-cmd and firewalld - Manage SELinux port labels - Configure key-based authentication for SSH |
| Topic 2: Manage software | - Configure access to Flatpak repositories - Install and remove RPM software packages - Configure access to RPM repositories - Install and remove Flatpak software packages |
| Topic 3: Manage basic networking | - Configure IPv4 and IPv6 addresses - Configure hostname resolution - Restrict network access using firewalld and firewall-cmd - Configure network services to start automatically at boot |
| Topic 4: Deploy, configure, and maintain systems | - Configure systems to boot into a specific target automatically - Modify the system bootloader - Install and update software packages - Schedule tasks using at, cron, and systemd timer units - Start and stop services and configure services to start automatically at boot - Configure time service clients |
| Topic 5: Configure local storage | - Create and delete logical volumes - Create and remove physical volumes - Add new partitions, logical volumes, and swap non-destructively - Assign physical volumes to volume groups - List, create, and delete partitions on GPT disks - Configure systems to mount file systems at boot by UUID or label |
| Topic 6: Create simple shell scripts | - Process output of shell commands within a script - Use looping constructs to process files and command-line input - Process script inputs - Conditionally execute code |
| Topic 7: Understand and use essential tools | - Create hard and soft links - Use input-output redirection - Use grep and regular expressions to analyze text - Access a shell prompt and issue commands with correct syntax - Access remote systems using SSH - Log in and switch users in multi-user targets - Locate, read, and use system documentation - Archive, compress, unpack, and uncompress files using tar, gzip, and bzip2 - Create, delete, copy, and move files and directories - Create and edit text files - List, set, and change standard ugo/rwx permissions |
| Topic 8: Create and configure file systems | - Diagnose and correct file permission problems - Extend existing logical volumes - Create, mount, unmount, and use VFAT, ext4, and XFS file systems - Mount and unmount network file systems using NFS - Configure autofs |
| Topic 9: Operate running systems | - Locate and interpret system log files and journals - Manage tuning profiles - Boot systems into different targets manually - Identify CPU and memory intensive processes and kill processes - Boot, reboot, and shut down a system normally - Adjust process scheduling - Start, stop, and check the status of network services - Preserve system journals - Securely transfer files between systems - Interrupt the boot process to gain access to a system |
| Topic 10: Manage users and groups | - Configure privileged access - Create, delete, and modify local groups and group memberships - Create, delete, and modify local user accounts - Change passwords and adjust password aging for local users |
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NEW QUESTION # 51
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:
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 # 52
Search files.
Find out files owned by jack, and copy them to directory /root/findresults
Answer:
Explanation:
mkdir/root/findfiles
find / -user jack -exec cp -a {} /root/findfiles/ \; ls /root/findresults
NEW QUESTION # 53
Pull the registry.access.redhat.com/ubi10/ubi image and run a rootless container named webtest that executes
sleep 3600.
Answer:
Explanation:
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 )
NEW QUESTION # 54
Download ftp://192.168.0.254/pub/boot.iso to /root, and mounted automatically under /media/cdrom and which take effect automatically at boot-start.
Answer:
Explanation:
see explanation below.
Explanation
# cd /root; wget ftp://192.168.0.254/pub/boot.iso
# mkdir -p /media/cdrom
# vim /etc/fstab
/root/boot.iso /media/cdrom iso9660 defaults,loop 0 0
# mount -a
mount [-t vfstype] [-o options] device dir
NEW QUESTION # 55
There is a local logical volumes in your system, named with shrink and belong to VGSRV volume group, mount to the /shrink directory. The definition of size is 320 MB.
Requirement:
Reduce the logical volume to 220 MB without any loss of data. The size is allowed between 200-260 MB after reducing.
Answer:
Explanation:
see explanation below.
Explanation
cd;umount /shrink
e2fsck -f /dev/mapper/vgsrv-shrink
resize2fs /dev/mapper/vgsrv-shrink 220M
lvreduce -L 220M /dev/mapper/vgsrv-shrink
mount -a
NEW QUESTION # 56
......
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