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| Section | Weight | Objectives |
|---|---|---|
| Create and configure file systems | 15% | - Create and mount XFS, ext4, VFAT file systems - Manage access control lists (ACLs) - Mount and manage network file systems (NFS, autofs) - Maintain entries in /etc/fstab using UUID or labels |
| Deploy, configure, and maintain systems | 15% | - Manage software packages with DNF/YUM - Manage network interfaces and settings with NetworkManager/nmcli - Configure firewalld firewall rules |
| Operate running systems | 20% | - Schedule tasks using cron and at - Boot systems into different targets; manage systemd units - Maintain accurate system time with chrony - Manage networking and network services - Manage logging and journaling |
| Manage security | 10% | - Restore file contexts and troubleshoot SELinux issues - Enforce SELinux modes, contexts, booleans, and port labeling |
| Configure local storage | 15% | - Configure swap space - Create and manage LVM physical volumes, volume groups, logical volumes - List, create, delete partitions and GPT/MBR layouts |
| Perform basic shell scripting | - Use conditional statements, loops, and script inputs | |
| Manage users and groups | 10% | - Create, delete, modify users and groups - Configure SSH key-based authentication - Manage password policies and sudo access |
| Understand and use essential tools | 25% | - Archive, compress, unpack files using tar, gzip, bzip2 - Access shell prompt and issue commands with correct syntax - Access remote systems via SSH - Use grep and regular expressions - Use input-output redirection - Create/edit text files; manage files, directories, links, permissions |
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NEW QUESTION # 25
The following command is issued on two docker nodes:
docker network create --driver bridge isolated_nw
Afterwards, one container is started at each node with the parameter --network=isolated_nw. It turns out
that the containers can not interact with each other. What must be done in order to allow the containers to
interact with each other? (Choose two correct answers.)
Answer: C,E
Explanation:
Explanation/Reference:
Reference https://docs.docker.com/v17.09/engine/userguide/networking/#bridge-networks
NEW QUESTION # 26
Create a shared directory
Create a shared directory with the following characteristics:
* The group owner of /home/test is admins.
* Members of the admins group can read, write, and access this directory. Other users (except root) do not have these permissions.
* Files created inside this directory automatically have their group ownership set to the admins group.
Answer:
Explanation:
Solution:
Create the group:
[root@node1 ~]# groupadd admins
Create the directory:
[root@node1 ~]# mkdir /home/test
Set the group ownership:
[root@node1 ~]# chgrp admins /home/test
Set the permissions:
[root@node1 ~]# chmod 2770 /home/test
Verify:
[root@node1 ~]# ls -ld /home/test
drwxrws--- root admins /home/test
NEW QUESTION # 27
Create a Container Image
As the user "wallah," download the Containerfile from http://classroom/Containerfile.
Do not modify the content of this file. Build an image named "pdf."
Answer:
Explanation:
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
NEW QUESTION # 28
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 # 29
Create a Collaborative Directory
Create a shared directory /home/managers with the following characteristics:
- The group ownership of /home/managers is sysmgrs.
- The directory should be readable, writable, and executable by members of the sysmgrs group, but should not have read or write permissions for any other users
(of course, the root user has access to all files and folders).
- Any files created within /home/managers should automatically inherit the group ownership set to the sysmgrs group.
Answer:
Explanation:
Solution:
[root@node1 ~]# mkdir /home/managers
[root@node1 ~]# chgrp sysmgrs /home/managers
[root@node1 ~]# chmod 2770 /home/managers
# Verification
[root@node1 ~]# ll -d /home/managers
NEW QUESTION # 30
......
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