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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Configure local storage | 15% | - Create and manage LVM physical volumes, volume groups, logical volumes - Configure swap space - List, create, delete partitions and GPT/MBR layouts |
| Topic 2: Perform basic shell scripting | - Use conditional statements, loops, and script inputs | |
| Topic 3: Operate running systems | 20% | - Schedule tasks using cron and at - Manage networking and network services - Manage logging and journaling - Boot systems into different targets; manage systemd units - Maintain accurate system time with chrony |
| Topic 4: Understand and use essential tools | 25% | - Access shell prompt and issue commands with correct syntax - Archive, compress, unpack files using tar, gzip, bzip2 - Use input-output redirection - Access remote systems via SSH - Use grep and regular expressions - Create/edit text files; manage files, directories, links, permissions |
| Topic 5: Manage users and groups | 10% | - Create, delete, modify users and groups - Configure SSH key-based authentication - Manage password policies and sudo access |
| Topic 6: Deploy, configure, and maintain systems | 15% | - Manage software packages with DNF/YUM - Configure firewalld firewall rules - Manage network interfaces and settings with NetworkManager/nmcli |
| Topic 7: Manage security | 10% | - Enforce SELinux modes, contexts, booleans, and port labeling - Restore file contexts and troubleshoot SELinux issues |
| Topic 8: Create and configure file systems | 15% | - Mount and manage network file systems (NFS, autofs) - Maintain entries in /etc/fstab using UUID or labels - Create and mount XFS, ext4, VFAT file systems - Manage access control lists (ACLs) |
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NEW QUESTION # 23
Part 1 (on Node1 Server)
Task 2 [Installing and Updating Software Packages]
Configure your system to use this location as a default repository:
http://utility.domain15.example.com/BaseOS
http://utility.domain15.example.com/AppStream
Also configure your GPG key to use this location
http://utility.domain15.example.com/RPM-GPG-KEY-redhat-release
Answer:
Explanation:
* [root@node1 ~]# vim /etc/yum.repos.d/redhat.repo
[BaseOS]
name=BaseOS
baseurl=http://utility.domain15.example.com/BaseOS
enabled=1
gpgcheck=1
gpgkey=http://utility.domain15.example.com/RPM-GPG-KEY-redhat-release
[AppStream]
name=AppStream
baseurl=http://utility.domain15.example.com/AppStream
enabled=1
gpgcheck=1
gpgkey=http://utility.domain15.example.com/RPM-GPG-KEY-redhat-release
[root@node1 ~]# yum clean all
[root@node1 ~]# yum repolist
[root@node1 ~]# yum list all
NEW QUESTION # 24
Create a user alex with a userid of 3400. The password for this user should be redhat.
Answer:
Explanation:
see explanation below.
* useradd -u 3400 alex
* passwd alex
* su -alex
NEW QUESTION # 25
SIMULATION
There are two different networks, 192.168.0.0/24 and 192.168.1.0/24. Your System is in 192.168.0.0/24 Network. One RHEL6 Installed System is going to use as a Router. All required configuration is already done on Linux Server. Where 192.168.0.254 and 192.168.1.254 IP Address are assigned on that Server.
How will make successfully ping to 192.168.1.0/24 Network's Host?
Answer:
Explanation:
See explanation below.
Explanation/Reference:
Explanation:
vi /etc/sysconfig/network GATEWAY=192.168.0.254
OR
vi /etc/sysconf/network-scripts/ifcfg-eth0 DEVICE=eth0
BOOTPROTO=static
ONBOOT=yes
IPADDR=192.168.0.?
NETMASK=255.255.255.0
GATEWAY=192.168.0.254
service network restart
Gateway defines the way to exit the packets. According to question System working as a router for two networks have IP Address 192.168.0.254 and 192.168.1.254.
NEW QUESTION # 26
User mary must configure a task.
Requirement: The local time at 14:23 every day echo "Hello World.".
Answer:
Explanation:
crontab -u mary -e
23 14 * * * echo "Hello World."
NEW QUESTION # 27
One Logical Volume named lv1 is created under vg0. The Initial Size of that Logical Volume is 100MB. Now you required the size 500MB. Make successfully the size of that Logical Volume 500M without losing any data. As well as size should be increased online.
Answer:
Explanation:
see explanation below.
Explanation
The LVM system organizes hard disks into Logical Volume (LV) groups. Essentially, physical hard disk partitions (or possibly RAID arrays) are set up in a bunch of equal sized chunks known as Physical Extents (PE). As there are several other concepts associated with the LVM system, let's start with some basic definitions:
Physical Volume (PV) is the standard partition that you add to the LVM mix. Normally, a physical volume is a standard primary or logical partition. It can also be a RAID array.
Physical Extent (PE) is a chunk of disk space. Every PV is divided into a number of equal sized PEs. Every PE in a LV group is the same size. Different LV groups can have different sized PEs.
Logical Extent (LE) is also a chunk of disk space. Every LE is mapped to a specific PE.
Logical Volume (LV) is composed of a group of LEs. You can mount a file system such as /home and /var on an LV.
Volume Group (VG) is composed of a group of LVs. It is the organizational group for LVM. Most of the commands that you'll use apply to a specific VG.
* Verify the size of Logical Volume: lvdisplay /dev/vg0/lv1
* Verify the Size on mounted directory: df -h or df -h mounted directory name
* Use: lvextend -L+400M /dev/vg0/lv1
* ext2online -d /dev/vg0/lv1 to bring extended size online.
* Again Verify using lvdisplay and df -h command.
NEW QUESTION # 28
......
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