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| Section | Objectives |
|---|---|
| Topic 1: Manage software | - Configure RPM repositories - Install and remove RPM packages - Install and remove Flatpak packages - Configure Flatpak repositories |
| Topic 2: Operate running systems | - System logs and journals - Process scheduling - Process monitoring and termination - Boot, reboot, and shut down systems - Network services - Interrupt the boot process - Secure file transfer - Boot systems into different targets - Tuning profiles |
| Topic 3: Create and configure file systems | - File permission troubleshooting - NFS file systems - Autofs - VFAT, ext4, and XFS file systems - Extending logical volumes |
| Topic 4: Create simple shell scripts | - Processing script inputs - Conditional execution - Looping constructs - Processing command output |
| Topic 5: Understand and use essential tools | - Users and multi-user targets - File archiving and compression - Input and output redirection - Hard and soft links - Creating and editing text files - File and directory management - File permissions - Text analysis with grep and regular expressions - System documentation - Shell access and command syntax - Remote system access using SSH |
| Topic 6: Manage users and groups | - Local user account management - Privileged access configuration - Password and password aging management - Local group management |
| Topic 7: Deploy, configure, and maintain systems | - Time service clients - Task scheduling with at, cron, and systemd timers - Bootloader configuration - Service management - Default boot target configuration - Software installation and updates |
| Topic 8: Configure local storage | - GPT disk partitions - Volume groups - Logical volumes - Physical volumes - Adding partitions, logical volumes, and swap - File system mounting using UUID or labels |
| Topic 9: Manage security | - SSH key-based authentication - Default file permissions - SELinux port labels - Firewall configuration - SELinux enforcing and permissive modes - SELinux Boolean settings - SELinux file and process contexts - SELinux file context restoration |
| Topic 10: Manage basic networking | - Network services at boot - Hostname resolution - Firewall configuration with firewalld and firewall-cmd - IPv4 and IPv6 configuration |
>> EX200 Latest Test Report <<
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NEW QUESTION # 29
Configure Cron Job
Configure a cron job to automatically execute /usr/bin/echo hello every day at 14:23 for the user harry.
Answer:
Explanation:
Solution:
[root@node1 ~]# systemctl status crond
[root@node1 ~]# systemctl enable crond
[root@node1 ~]# crontab -e -u harry
23 14 * * * /usr/bin/echo hello
# Verification
[root@node1 ~]# crontab -l -u harry
NEW QUESTION # 30
Create a 512M partition, make it as ext4 file system, mounted automatically under /mnt/data and which take effect automatically at boot-start.
Answer:
Explanation:
# fdisk /dev/vda
n
+512M
w
# partprobe /dev/vda
# mkfs -t ext4 /dev/vda5
# mkdir -p /data
# vim /etc/fstab
/dev/vda5 /data ext4 defaults 0 0
# mount -a
NEW QUESTION # 31
There is a server having 172.24.254.254 and 172.25.254.254. Your System lies on 172.24.0.0/16. Make successfully ping to 172.25.254.254 by Assigning following IP: 172.24.0.x where x is your station number.
Answer:
Explanation:
see explanation below.
Explanation
* Use netconfig command
* Enter the IP Address as given station number by your examiner: example: 172.24.0.1
* Enter Subnet Mask
* Enter Default Gateway and primary name server
* press on ok
* ifdown eth0
* ifup eth0
* verify using ifconfig
In the lab server is playing the role of router, IP forwarding is enabled. Just set the Correct IP and gateway, you can ping to 172.25.254.254.
NEW QUESTION # 32
26. Create Logical Volume
According to the given requirements, create a new logical volume:
- Logical volume named "mylv" belonging to the volume group "myvg" with a size of 50 extents.
- Extent size of logical volumes in volume group "myvg" should be 16 MiB.
- Format the new logical volume with the VFAT filesystem.
- The logical volume should be automatically mounted at /mnt/mydata during system startup.
Answer:
Explanation:
Solution:
# Check the disk layout
[root@node2 ~]# lsblk
# Partition the disk
[root@node2 ~]# fdisk /dev/vdb
Welcome to fdisk (util-linux 2.37.4).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.
Command (m for help): n # Add a new partition
Partition type
p primary (1 primary, 0 extended, 3 free) # Primary partition
e extended (container for logical partitions) # Extended partition
Select (default p): p
Partition number (2-4, default 2): # Press Enter
First sector (1026048-20971519, default 1026048): # Press Enter
***Note: The partition size must be larger than the total size, it should not be exactly equal to. It is recommended to add an extra 200M.
Last sector, +/-sectors or +/-size{K,M,G,T,P} (1026048-20971519, default 20971519): +1200M # Partition size
Created a new partition 2 of type 'Linux' and of size 512 MiB.
Command (m for help): w # Save and exit
The partition table has been altered.
Syncing disks.
# Create volume group and logical volume
[root@node2 ~]# vgcreate -s 16M myvg /dev/vdb4
[root@node2 ~]# lvcreate -l 50 -n mylv myvg
# Install vfat support
[root@node2 ~]# yum provides */mkfs.vfat
[root@node2 ~]# yum -y install dosfstools
# Format the logical volume with vfat filesystem
[root@node2 ~]# mkfs.vfat /dev/myvg/mylv
# Create mount point
[root@node2 ~]# mkdir /mnt/mydata
# Update /etc/fstab for automatic mounting
[root@node2 ~]# vim /etc/fstab
/dev/myvg/mylv /mnt/mydata vfat defaults 0 0
# Mount the logical volume
[root@node2 ~]# mount -a
NEW QUESTION # 33
Create a compressed archive of /etc and verify its file type.
Answer:
Explanation:
See the solution below in Explanation.
Explanation:
Solution:
tar -zvcf /root/etc_backup.tar.gz /etc
file /root/etc_backup.tar.gz
Detailed Explanation:
* tar creates the archive.
* -z uses gzip compression.
* -v is verbose.
* -c creates the archive.
* -f names the output file.
* file confirms the resulting archive type.
NEW QUESTION # 34
......
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