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RedHat EX200 Exam Syllabus Topics:

SectionWeightObjectives
Configure local storage15%- List, create, delete partitions and GPT/MBR layouts
- Create and manage LVM physical volumes, volume groups, logical volumes
- Configure swap space
Manage users and groups10%- Manage password policies and sudo access
- Configure SSH key-based authentication
- Create, delete, modify users and groups
Understand and use essential tools25%- Create/edit text files; manage files, directories, links, permissions
- Access shell prompt and issue commands with correct syntax
- Access remote systems via SSH
- Use grep and regular expressions
- Use input-output redirection
- Archive, compress, unpack files using tar, gzip, bzip2
Perform basic shell scripting- Use conditional statements, loops, and script inputs
Operate running systems20%- Schedule tasks using cron and at
- Boot systems into different targets; manage systemd units
- Manage networking and network services
- Manage logging and journaling
- Maintain accurate system time with chrony
Manage security10%- Restore file contexts and troubleshoot SELinux issues
- Enforce SELinux modes, contexts, booleans, and port labeling
Create and configure file systems15%- Maintain entries in /etc/fstab using UUID or labels
- Mount and manage network file systems (NFS, autofs)
- Manage access control lists (ACLs)
- Create and mount XFS, ext4, VFAT file systems
Deploy, configure, and maintain systems15%- Manage software packages with DNF/YUM
- Configure firewalld firewall rules
- Manage network interfaces and settings with NetworkManager/nmcli

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RedHat Red Hat Certified System Administrator - RHCSARHEL 10 Sample Questions (Q66-Q71):

NEW QUESTION # 66
Configure a firewall rule to allow the http service permanently.

Answer:

Explanation:
See the solution below in Explanation.
Explanation:
Solution:
firewall-cmd --permanent --add-service=http
firewall-cmd --reload
firewall-cmd --list-services
Detailed Explanation:
* --permanent saves the rule.
* --reload applies it.
* --list-services verifies the active configuration.
* Firewalld remains the standard firewall interface in RHEL 10. ( Red Hat Documentation )


NEW QUESTION # 67
Add admin group and set gid=600

Answer:

Explanation:
Answer see in the explanation.
Explanation/Reference:
# groupadd -g 600 admin


NEW QUESTION # 68
Adjust Logical Volume Size
Adjust the size of the logical volume "vo" and its filesystem to 300 MiB, ensuring that the filesystem content remains unchanged.
Note: Partition sizes rarely match the requested size exactly, so a range of 290 MiB to 310 MiB is acceptable.
For ext4 filesystems, use resize2fs to take effect immediately; for xfs filesystems, use xfs_growfs to take effect immediately.

Answer:

Explanation:
# Scan logical volumes
[root@node2 ~]# lvscan
# Extend the logical volume. With -rL, the filesystem space is adjusted immediately after extending the volume.
[root@node2 ~]# lvextend -rL 300M /dev/myvol/vo
# Check the changes
[root@node2 ~]# lsblk
[root@node2 ~]# lvs
# Verification
[root@node2 ~]# df -h


NEW QUESTION # 69
SIMULATION
Notes:
NFS： NFS instructor.example.com:/var/ftp/pub/rhel6/dvd
YUM： http://instructor.example.com/pub/rhel6/dvd
ldap： http：//instructor.example.com/pub/EXAMPLE-CA-CERT
Install dialog package.

Answer:

Explanation:
yum install dialog


NEW QUESTION # 70
Configure HTTP service access on a non-standard port 82 and allow it through SELinux and firewalld.

Answer:

Explanation:
See the solution below in Explanation.
Explanation:
Solution:
* Open the firewall port and HTTP service:
firewall-cmd --permanent --add-port=82/tcp
firewall-cmd --permanent --add-service=http
firewall-cmd --reload
* Add SELinux port labeling:
semanage port -a -t http_port_t -p tcp 82
Detailed Explanation:
* firewall-cmd --permanent makes the change persistent.
* --add-port=82/tcp opens the custom TCP port.
* --add-service=http keeps standard HTTP allowed too.
* SELinux blocks services on unexpected ports unless the port is labeled correctly.
* http_port_t tells SELinux that port 82 is valid for web services.


NEW QUESTION # 71
......

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