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| Section | Objectives |
|---|---|
| Topic 1: Operate running systems | - Log files and journal management - Boot into different targets - Process management and monitoring - Boot, reboot and shut down systems - Secure file transfer - Service control and status checking |
| Topic 2: Manage basic networking | - IPv4 and IPv6 address configuration - Hostname resolution - Network service startup configuration |
| Topic 3: Understand and use essential tools | - Access system documentation - Links and permissions - Text processing with grep and regular expressions - File archiving, compression and decompression - Input/output redirection - File and directory management - Remote access via SSH - Access shell prompt and use commands |
| Topic 4: Create simple shell scripts | - Loops and iteration - Input and argument processing - Command output processing - Conditional statements |
| Topic 5: Create and configure file systems | - Permission and ownership troubleshooting - Autofs configuration - Create and mount ext4, xfs, VFAT file systems - Network file systems (NFS) - Logical volume extension |
| Topic 6: Manage users and groups | - Password and aging policy - Superuser access control - Group and membership management - User account management |
| Topic 7: Manage security | - Firewall configuration with firewalld - SELinux booleans and policy - SELinux modes and configuration - SSH key-based authentication - SELinux context management - Default permissions and umask |
| Topic 8: Manage software | - Install and remove Flatpak applications - Install and remove RPM packages - Flatpak repository configuration - RPM repository configuration |
| Topic 9: Deploy, configure and maintain systems | - Task scheduling with at and cron - System target configuration - Service management and automatic startup - Software installation and update - Bootloader modification - Time synchronization |
| Topic 10: Configure local storage | - Mount file systems at boot via UUID or label - Swap configuration - Disk partitioning (MBR and GPT) - Physical volumes, volume groups and logical volumes |
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NEW QUESTION # 13
SIMULATION
Configure your Host Name, IP Address, Gateway and DNS.
Host name: dtop5.dn.ws.com
IP Address: 172.28.10.5/4
Gateway: 172.28.10.1
DNS: 172.28.10.1
Answer:
Explanation:
See explanation below.
Explanation/Reference:
Explanation:
1. Configure Host Name
vim /etc/sysconfig/network NETWORKING=yes HOSTNAME=dtop5.dn.ws.com GATEWAY=172.28.10.1
2. Configure IP Address, Gateway and DNS
Configure the network by Network Manager:
Note: Please remember to choose two options:
Connect automatically
Available to all users
Click "Apply", save and exit, and restart your network services:
# Service network restart
3. Validate these profiles:
a) Check gateway: # vim / etc / sysconfig / network
NETWORKING=yes
HOSTNAME=dtop5.dn.ws.com
GATEWAY=172.28.10.1
b) Check Host Name: # vim /etc/hosts
c) Check DNS: # vim /etc/resolv.conf
# Generated by NetworkManager
Search dn.ws.com
Nameserver 172.28.10.1
d) Check Gateway: # vim /etc/sysconfig/network-scripts/ifcfg-eth0
NEW QUESTION # 14
CORRECT TEXT
Change the logical volume capacity named vo from 190M to 300M. and the size of the floating range should set between 280 and 320. (This logical volume has been mounted in advance.)
Answer:
Explanation:
# vgdisplay
(Check the capacity of vg, if the capacity is not enough, need to create pv , vgextend , lvextend)
# lvdisplay (Check lv)
# lvextend -L +110M /dev/vg2/lv2
# resize2fs /dev/vg2/lv2
mount -a
(Verify)
------------------------------------------------------------------------------- (Decrease lvm)
# umount /media
# fsck -f /dev/vg2/lv2
# resize2fs -f /dev/vg2/lv2 100M
# lvreduce -L 100M /dev/vg2/lv2
# mount -a
# lvdisplay (Verify)
OR
# e2fsck -f /dev/vg1/lvm02
# resize2fs -f /dev/vg1/lvm02
# mount /dev/vg1/lvm01 /mnt
# lvreduce -L 1G -n /dev/vg1/lvm02
# lvdisplay (Verify)
NEW QUESTION # 15
Create a snapshot of the Stratis file system fs1 in pool pool1 named fs1-snap.
Answer:
Explanation:
See the solution below in Explanation.
Explanation:
Solution:
stratis filesystem snapshot pool1 fs1 fs1-snap
stratis filesystem list
Detailed Explanation:
* This creates a snapshot of the existing Stratis file system.
* Snapshots are useful for rollback, backup, and testing operations.
* Stratis features, including pool and file-system management, are part of RHEL 10 file-system
administration. ( Red Hat Documentation )
NEW QUESTION # 16
SIMULATION
SELinux must be running in the Enforcing mode.
Answer:
Explanation:
See explanation below.
Explanation/Reference:
Explanation:
getenforce // Check the current mode of SELinux // SELinux runs in enforcing mode // Check getenforce 1 getenforce vim /etc/selinux/config selinux=enforcing // To temporarily enable SELinux
:wg
sestatus
NEW QUESTION # 17
Create a catalog under /home named admins. Its respective group is requested to be the admin group. The group users could read and write, while other users are not allowed to access it. The files created by users from the same group should also be the admin group.
Answer:
Explanation:
see explanation below.
Explanation
# cd /home/
# mkdir admins /
# chown .admin admins/
# chmod 770 admins/
# chmod g+s admins/
NEW QUESTION # 18
......
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