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CompTIA XK0-005, also known as the CompTIA Linux+ certification exam, is a vendor-neutral certification that validates the skills and knowledge of IT professionals in the Linux operating system. CompTIA Linux+ Certification Exam certification is ideal for individuals who want to demonstrate their expertise in Linux and open-source technologies. The CompTIA Linux+ certification is recognized globally and is highly valued by employers.

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CompTIA XK0-005 Certification Exam is a globally recognized certification that validates IT professionals' knowledge of Linux operating systems. It is ideal for individuals who wish to advance their careers in IT and for businesses seeking professionals with Linux expertise. With the increasing demand for Linux expertise in the IT industry, this certification provides a competitive advantage to its recipients, and it is only likely to become more valuable with time.

CompTIA XK0-005 Exam is a comprehensive exam that assesses the candidate's knowledge and skills in Linux administration. XK0-005 exam consists of multiple-choice questions and performance-based simulations that test the candidate's ability to perform real-world tasks in Linux administration. XK0-005 exam is divided into four domains, namely system configuration and management, network services, security, and troubleshooting and diagnostics.

CompTIA Linux+ Certification Exam Sample Questions (Q141-Q146):

NEW QUESTION # 141
A systems administrator has been tasked with disabling the nginx service from the environment to prevent it from being automatically and manually started. Which of the following commands will accomplish this task?

A. systemctl cancel nginx
B. systemctl mask nginx
C. systemctl stop nginx
D. systemctl disable nginx

Answer: B

NEW QUESTION # 142
A Linux administrator is trying to remove the ACL from the file /home/user/data. txt but receives the following error message:

Given the following analysis:

Which of the following is causing the error message?

A. The administrator is not using a highly privileged account.
B. The filesystem is mounted with the wrong options.
C. SELinux file context is denying the ACL changes.
D. File attributes are preventing file modification.

Answer: D

Explanation:
Explanation
File attributes are preventing file modification, which is causing the error message. The output of lsattr
/home/user/data.txt shows that the file has the immutable attribute (i) set, which means that the file cannot be changed, deleted, or renamed. The command setfacl -b /home/user/data.txt tries to remove the ACL from the file, but fails because of the immutable attribute. The administrator needs to remove the immutable attribute first by using the command chattr -i /home/user/data.txt and then try to remove the ACL again. The other options are incorrect because they are not supported by the outputs. The administrator is using a highly privileged account, as shown by the # prompt. The filesystem is mounted with the correct options, as shown by the output of mount | grep /home. SELinux file context is not denying the ACL changes, as shown by the output of ls -Z /home/user/data.txt. References: CompTIA Linux+ (XK0-005) Certification Study Guide, Chapter 11: Managing Files and Directories, pages 357-358.

NEW QUESTION # 143
Several users reported that they were unable to write data to the /oracle1 directory. The following output has been provided:

Which of the following commands should the administrator use to diagnose the issue?

A. fdisk -1 /dev/sdb1
B. du -sh /oracle1
C. df -i /oracle1
D. lsblk /dev/sdb1

Answer: C

NEW QUESTION # 144
A Linux administrator cloned an existing Linux server and built a new server from that clone. The administrator encountered the following error after booting the cloned server:

The administrator performed the commands listed below to further troubleshoot and mount the missing filesystem:

Which of the following should administrator use to resolve the device mismatch issue and mount the disk?

A. fsck -A
B. mount disk by-label
C. mount disk by-blkid
D. mount disk by device-id

Answer: D

Explanation:
Explanation
The administrator should use the command mount disk by device-id to resolve the device mismatch issue and mount the disk. The issue is caused by the cloned server having a different device name for the disk than the original server. The output of blkid shows that the disk has the device name /dev/sdb1 on the cloned server, but the output of cat /etc/fstab shows that the disk is expected to have the device name /dev/sda1. The command mount disk by device-id will mount the disk by using its unique identifier (UUID) instead of its device name. The UUID can be obtained from the output of blkid or lsblk -f. The command will mount the disk to the specified mount point (/data) and resolve the issue. The other options are incorrect because they either do not mount the disk (fsck -A), do not use the correct identifier (mount disk by-label or mount disk by-blkid), or do not exist (mount disk by-blkid). References: CompTIA Linux+ (XK0-005) Certification Study Guide, Chapter 10: Managing Storage, pages 318-319.

NEW QUESTION # 145
A Linux administrator provisioned a new web server with custom administrative permissions for certain users. The administrator receives a report that user1 is unable to restart the Apache web service on this server.
The administrator reviews the following output:
[ root@server ] # id user1
UID=1011 (user1) gid=1011 (USER1) groups=1011 (user1), 101 (www-data), 1120 (webadmin)
[ root@server ] # cat /etc/sudoers.d/custom.conf
user1 ALL=/usr/sbin/systemctl start httpd, /usr/sbin/systemctl stop httpd webadmin ALL=NOPASSWD: /etc/init.d.httpd restart, /sbin/service httpd restart, /usr/sbin/apache2ctl restart
#%wheel ALL=(ALL) NOPASSWD: ALL
Which of the following would most likely resolve the issue while maintaining a least privilege security model?

A. Webadmin should be listed as a group in the custom. conf file.
B. User1 should have "NOPASSWD:" after the "ALL=" in the custom. conf.
C. User1 should be added to the wheel group to manage the service.
D. The wheel line in the custom. conf file should be uncommented.

Answer: A

Explanation:
The custom.conf file grants sudo privileges to user1 and webadmin for managing the Apache web service, but it uses different commands for each of them. User1 is allowed to use systemctl to start and stop the httpd service, while webadmin is allowed to use init.d, service, or apache2ctl to restart the httpd service. However, the user1 is unable to restart the service, only start and stop it. To fix this, user1 should be able to use the same commands as webadmin, which can be achieved by listing webadmin as a group in the custom.conf file, using the syntax %groupname. This way, user1 will inherit the sudo privileges of the webadmin group, and be able to restart the Apache web service without compromising the least privilege security model.
References
* Sudo and Sudoers Configuration | Servers for Hackers, section "Groups"
* Chapter 12. Managing sudo access - Red Hat Customer Portal, section "12.1. Configuring sudo access for users and groups"

NEW QUESTION # 146
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