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| Section | Weight | Objectives |
|---|---|---|
| Perform basic shell scripting | - Use conditional statements, loops, and script inputs | |
| Operate running systems | 20% | - Schedule tasks using cron and at - Maintain accurate system time with chrony - Boot systems into different targets; manage systemd units - Manage logging and journaling - Manage networking and network services |
| Create and configure file systems | 15% | - Mount and manage network file systems (NFS, autofs) - Manage access control lists (ACLs) - Maintain entries in /etc/fstab using UUID or labels - Create and mount XFS, ext4, VFAT file systems |
| Understand and use essential tools | 25% | - Access shell prompt and issue commands with correct syntax - Access remote systems via SSH - Use input-output redirection - Create/edit text files; manage files, directories, links, permissions - Use grep and regular expressions - Archive, compress, unpack files using tar, gzip, bzip2 |
| Configure local storage | 15% | - Configure swap space - Create and manage LVM physical volumes, volume groups, logical volumes - List, create, delete partitions and GPT/MBR layouts |
| Manage users and groups | 10% | - Manage password policies and sudo access - Create, delete, modify users and groups - Configure SSH key-based authentication |
| Manage security | 10% | - Restore file contexts and troubleshoot SELinux issues - Enforce SELinux modes, contexts, booleans, and port labeling |
| Deploy, configure, and maintain systems | 15% | - Manage network interfaces and settings with NetworkManager/nmcli - Manage software packages with DNF/YUM - Configure firewalld firewall rules |
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NEW QUESTION # 35
08. Configure autofs
Configure autofs to automatically mount the home directory of a remote user as described below:
- materials.example.com (172.25.254.254) exports /rhome via NFS to your system. This filesystem contains a pre-configured home directory for the user
remoteuser1.
- The home directory of remoteuser1 is materials.example.com:/rhome/remoteuser1.
- The home directory of remoteuser1 should be automatically mounted locally at /rhome/remoteuser1.
- The home directory must be writable by the user.
- The password for remoteuser1 is "flectrag".
Answer:
Explanation:
Solution:
# Preparations (not required for the exam)
# Go back to foundation0, remote into classroom, create the remoteuser1 user and directory.
# This step is necessary to avoid issues with autofs mounting during testing.
[kiosk@foundation0 ~]$ ssh root@classroom 'useradd -u 1010 remoteuser1 && mkdir -p /rhome/remoteuser1 && chown remoteuser1: /rhome/remoteuser1'
# Install nfs-utils and autofs
[root@node1 ~]# yum -y install nfs-utils autofs
[root@node1 ~]# vim /etc/auto.master
/rhome /etc/auto.rhome
[root@node1 ~]# vim /etc/auto.rhome
remoteuser1 -rw materials.example.com:/rhome/remoteuser1
[root@node1 ~]# systemctl enable --now autofs
# Verification
[root@node1 ~]# ll /rhome/
[root@node1 ~]# ssh remoteuser1@localhost
remoteuser1@localhost\'s password: `flectrag`
$ pwd
/rhome/remoteuser1
$ touch my.file
$ mount | grep rhome
...
materials.example.com:/rhome/remoteuser1 on /rhome/remoteuser1 type nfs4
(`rw`,relatime,vers=4.2,rsize=131072,wsize=131072,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,clientaddr=172.25.250.100,local_lock=none,addr=1
72.25.254.254)
NEW QUESTION # 36
The file index.php, which is being maintained in a git repository, was changed locally and contains an error. If
the error has not been committed to the repository yet, which of the following gitcommands reverts the local
copy of index.phpto the latest committed version in the current branch?
Answer: E
Explanation:
Explanation/Reference:
Reference https://git-scm.com/docs/git-revert
NEW QUESTION # 37
A recently installed application writes log data to /opt/app/log/info.log. If Filebeat is already installed and
set up for communication with a remote Logstash, what has to be done in order to submit the log data of the
new application to Logstash?
Answer: C
NEW QUESTION # 38
Part 1 (on Node1 Server)
Task 5 [Controlling Access to Files with ACLs]
Copy the file /etc/fstab to /var/tmp. Configure the following permissions on /var/tmp/fstab.
The file /var/tmp/fstab is owned by root user
The file /var/tmp/fstab is belongs to the root group
The file /var/tmp/fstab should be executable by anyone
The user harry is able to read and write on /var/tmp/fstab
The user natasha can neither read or write on /var/tmp/fstab
All other users (Current or future) have the ability to read /var/tmp/fstab
Answer:
Explanation:
* [root@node1 ~]# cp -p /etc/fstab /var/tmp/
[root@node1 ~]# ls -lrt /etc/fstab
[root@node1 ~]# ls -lrt /var/tmp/fstab
[root@node1 ~]# chmod a+x /var/tmp/fstab
[root@node1 ~]# getfacl /var/tmp/fstab
[root@node1 ~]# setfacl -m u:harry:rw- /var/tmp/fstab
[root@node1 ~]# setfacl -m u:natasha:--- /var/tmp/fstab
[root@node1 ~]# getfacl /var/tmp/fstab
getfacl: Removing leading '/' from absolute path names
# file: var/tmp/fstab
# owner: root
# group: root
user::rwx
user:harry:rw-
user:natasha:---
group::r-x
mask::rwx
other::r-x
* [root@node1 ~]# su - natasha
[natasha@node1 ~]$ cat /var/tmp/fstab
cat: /var/tmp/fstab: Permission denied
NEW QUESTION # 39
A YUM source has been provided in the
http://instructor.example.com/pub/rhel6/dvd
Configure your system and can be used normally.
Answer:
Explanation:
see explanation below.
Explanation
* /etc/yum.repos.d/base.repo
[base]
name=base
baseurl=http://instructor.example.com/pub/rhel6/dvd
gpgcheck=0
yum list
NEW QUESTION # 40
......
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