XK0-006 Training Materials & XK0-006 Certification Training & XK0-006 Exam Questions

CompTIA XK0-006 : CompTIA Linux+ Certification Exam

Exam Code: XK0-006

Exam Name: CompTIA Linux+ Certification Exam

Updated: Oct 11, 2026

Q & A: 208 Questions and Answers

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CompTIA XK0-006 Exam Syllabus Topics:

TopicDetails
Topic 1
  • Security: Focuses on securing Linux systems through authentication, firewalls, OS hardening, account policies, cryptography, and compliance checks.
Topic 2
  • Troubleshooting: Addresses diagnosing and resolving issues across system health, hardware, storage, networking, security configurations, and performance optimization.
Topic 3
  • Services and User Management: Covers day-to-day Linux administration including file management, user accounts, processes, software, services, and container operations.
Topic 4
  • Automation, Orchestration, and Scripting: Covers task automation with tools like Ansible, shell and Python scripting, Git version control, and responsible AI-assisted development.

Reference: https://www.comptia.org/en-us/certifications/linux/v8/#overview

CompTIA Linux+ Certification Sample Questions:

Question #1

A Linux administrator is making changes to local files that are part of a Git repository. The administrator needs to retrieve changes from the remote Git repository. Which of the following commands should the administrator use to save the local modifications for later review?

  • A. git merge
  • B. git pull
  • C. git stash
  • D. git fetch
Reveal Solution  Discussion  0

Correct Answer: C  🗳️

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Question #2

Users connecting to a MySQL database on a Linux system report frequent errors. An administrator reviews the following partial output of the /proc/meminfo and freecommands:

Which of the following should the administrator do to ensure that the MySQL service will continue to run even if the system runs out of swap space? (Choose two.)

  • A. Issue the sysctl -w vm.overconunit_memory=2 command.(Invalid key)
  • B. Issue the sysctl -w vm.overcommit_ratio=100 command.
  • C. Reload the /etc/fstab file by issuing the mount -a command.(Not sufficient alone)
  • D. Issue the dd if=/dev/zero of=/swapfile bs=1024 count=65536 command.
  • E. Issue the mkswap /dev/sda2; swapon -v /dev/sda2 command.
  • F. Use disk quotas on the swap space to prevent MySQL from overutilizing the swap partition.
Reveal Solution  Discussion  0

Correct Answer: D,E  🗳️

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Question #3

SIMULATION 3
You are a systems administrator and have created an uncompressed backup of the application directory. Several hours later, you must restore the application from backup.
INSTRUCTIONS
Within each tab, click on an object to form the appropriate command used to create the backup and restore the application.
Command objects may only be used once, but the spacebar object may be used multiple times.
Not all objects will be used. Click the arrow to remove any unwanted objects from your command.
If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.

Reveal Solution  Discussion  0

Correct Answer:



-cvf creates (-c) a verbose (-v) archive file (-f) named /backups/application.tar.
-C /opt/ application changes to /opt/ so only the relative application directory is saved, avoiding absolute paths.
-xvf extracts (-x) the same archive, and -C /opt/ restores the contents back into the original location.

Question #4

Which of the following is a protocol for accessing distributed directory services containing a hierarchy of users, groups, machines, and organization units?

  • A. SMB
  • B. LDAP
  • C. TLS
  • D. KRB-5
Reveal Solution  Discussion  0

Correct Answer: B  🗳️

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Question #5

While hardening a system, an administrator runs a port scan with Nmap, which returned the following output:

Which of the following is the best way to address this security issue?

  • A. Configuring a firewall to block traffic on port 23 on the server
  • B. Closing port 80 on the network switch to block traffic
  • C. Disabling and removing the Telnet service on the server
  • D. Changing the systems administrator's password to prevent unauthorized access
Reveal Solution  Discussion  0

Correct Answer: C  🗳️

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