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| Section | Objectives |
|---|---|
| Deploy, configure, and maintain systems | - Configure systems to boot into a specific target automatically - Install and update software packages - Schedule tasks using at, cron, and systemd timer units - Modify the system bootloader - Configure time service clients - Start and stop services and configure services to start automatically at boot |
| Configure local storage | - Assign physical volumes to volume groups - Add new partitions, logical volumes, and swap non-destructively - Create and remove physical volumes - Configure systems to mount file systems at boot by UUID or label - Create and delete logical volumes - List, create, and delete partitions on GPT disks |
| Create simple shell scripts | - Use looping constructs to process files and command-line input - Process script inputs - Conditionally execute code - Process output of shell commands within a script |
| 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 |
| Operate running systems | - Securely transfer files between systems - Adjust process scheduling - Preserve system journals - Start, stop, and check the status of network services - Boot systems into different targets manually - Manage tuning profiles - Interrupt the boot process to gain access to a system - Locate and interpret system log files and journals - Boot, reboot, and shut down a system normally - Identify CPU and memory intensive processes and kill processes |
| Create and configure file systems | - Configure autofs - Extend existing logical volumes - Mount and unmount network file systems using NFS - Diagnose and correct file permission problems - Create, mount, unmount, and use VFAT, ext4, and XFS file systems |
| Manage security | - List and identify SELinux file and process contexts - Manage default file permissions - Use Boolean settings to modify SELinux settings - Restore default file contexts - Set enforcing and permissive modes for SELinux - Configure firewall settings using firewall-cmd and firewalld - Manage SELinux port labels - Configure key-based authentication for SSH |
| Manage software | - Install and remove RPM software packages - Configure access to RPM repositories - Install and remove Flatpak software packages - Configure access to Flatpak repositories |
| Manage basic networking | - Restrict network access using firewalld and firewall-cmd - Configure network services to start automatically at boot - Configure hostname resolution - Configure IPv4 and IPv6 addresses |
| Understand and use essential tools | - List, set, and change standard ugo/rwx permissions - Archive, compress, unpack, and uncompress files using tar, gzip, and bzip2 - Create and edit text files - Create hard and soft links - Use input-output redirection - Create, delete, copy, and move files and directories - Access remote systems using SSH - Locate, read, and use system documentation - Access a shell prompt and issue commands with correct syntax - Use grep and regular expressions to analyze text - Log in and switch users in multi-user targets |
>> EX200 Most Reliable Questions <<
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NEW QUESTION # 14
27. System Optimization Configuration
Choose the recommended tuned configuration set for your system and set it as default.
Answer:
Explanation:
Solution:
# Install and enable tuned
[root@node2 ~]# yum -y install tuned
[root@node2 ~]# systemctl enable tuned
[root@node2 ~]# systemctl restart tuned
# Check the recommended configuration scheme for the system
[root@node2 ~]# tuned-adm recommend
virtual-guest
# Switch to the specified configuration scheme
[root@node2 ~]# tuned-adm profile virtual-guest
# Check the current configuration scheme
[root@node2 ~]# tuned-adm active
Current active profile: virtual-guest
NEW QUESTION # 15
Install and configure tuned, determine the recommended profile, and activate it.
Answer:
Explanation:
See the solution below in Explanation.
Explanation:
Solution:
dnf install -y tuned
systemctl enable --now tuned
tuned-adm recommend
tuned-adm profile virtual-guest
tuned-adm active
Detailed Explanation:
* The lab text uses yum, but on RHEL 10 dnf is the preferred package manager command. RHEL 10
documentation focuses on DNF behavior and changes.
* tuned-adm recommend shows the best-fit tuning profile.
* tuned-adm profile virtual-guest activates the profile.
* tuned-adm active confirms it.
NEW QUESTION # 16
Create a 2G swap partition which take effect automatically at boot-start, and it should not affect the original swap partition.
Answer:
Explanation:
Answer see in the explanation.
Explanation/Reference:
# fdisk /dev/sda
p
(check Partition table)
n
(create new partition: press e to create extended partition, press p to create the main partition, and the extended partition is further divided into logical partitions) Enter
+2G
t
l
W
partx -a /dev/sda
partprobe
mkswap /dev/sda8
Copy UUID
swapon -a
vim /etc/fstab
UUID=XXXXX swap swap defaults 0 0
(swapon -s)
NEW QUESTION # 17
You have a domain named www.rhce.com associated IP address is 192.100.0.2. Configure the Apache web server by implementing the SSL for encryption communication.
Answer:
Explanation:
vi /etc/httpd/conf.d/ssl.conf <VirtualHost 192.100.0.2> ServerName www.rhce.com DocumentRoot /var/www/rhce DirectoryIndex index.html index.htm ServerAdmin webmaster@rhce.com SSLEngine on SSLCertificateFile /etc/httpd/conf/ssl.crt/server.crt SSLCertificateKeyFile /etc/httpd/conf/ssl.key/server.key </VirtualHost> cd /etc/httpd/conf
3 make testcert
Create the directory and index page on specified path. (Index page can download from ftp://server1.example.com at exam time) service httpd start|restart chkconfig httpd on Apache can provide encrypted communications using SSL (Secure Socket Layer). To make use of encrypted communication, a client must request to https protocol, which is uses port 443. For HTTPS protocol required the certificate file and key file.
NEW QUESTION # 18
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:
see explanation below.
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 # 19
......
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