Free CompTIA XK0-006 Practice Questions & Answers 2026 Part1 | CompTIA Linux+

What command sequence would best be used to create a compressed backup archive of /etc and store it in /backup/etc.tar.gz?

A Linux administrator wants to add a user to the Docker group without changing their primary group. Which of the following commands should the administrator use to complete this task?

An administrator needs to verify the user ID, home directory, and assigned shell for the user named “accounting.” Which of the following commands should the administrator use to retrieve this information?

An administrator needs to remove the directory /home/user1/data and all of its contents. Which of the following commands should the administrator use?

A systems administrator wants to review the logs from an Apache 2 error.log file in real time and save the information to another file for later review. Which of the following commands should the administrator use?

A systems administrator needs to integrate a new storage array into the company's existing storage pool. The administrator wants to ensure that the server is able to detect the new storage array.

A Linux administrator wants to add a user to the Docker group without changing their primary group. Which of the following commands should the administrator use to complete this task?

A Linux administrator just finished setting up passwordless SSH authentication between two nodes. However, upon test validation, the remote host prompts for a password. Given the following logs:Which of the following is the most likely cause of the issue?

A Linux administrator receives reports that an application hosted in a system is not completing tasks in the allocated time. The administrator connects to the system and obtains the following details:Which of the following actions can the administrator take to help speed up the jobs?

Which of the following filesystems contains non-persistent or volatile data?

A systems administrator must provide privileged access to a specific user in a Linux system.Which of the following commands should the administrator use?

An administrator updates the network configuration on a server but wants to ensure the change will not cause an outage if something goes wrong. Which of the following commands allows the administrator to accomplish this goal?

An administrator updates the network configuration on a server but wants to ensure the change will not cause an outage if something goes wrong. Which of the following commands allows the administrator to accomplish this goal?

An administrator needs to verify the user ID, home directory, and assigned shell for the user named "accounting." Which of the following commands should the administrator use to retrieve this information?

Following the completion of monthly server patching, a Linux administrator receives reports that a critical application is not functioning. Which of the following commands should help the administrator determine which packages were installed?

A Linux software developer wants to use AI to optimize source code used in a commercial product. Which of the following steps should the developer take first? Linux+ V8 emphasizes security, compliance, and governance when introducing new automation technologies, including AI. Before using AI tools to optimize commercial source code, the developer must ensure that such usage complies with organizational policies. Option B is correct because verifying company policy is the first and most critical step. AI tools may introduce risks such as intellectual property leakage, licensing conflicts, or regulatory violations. Many organizations restrict how source code can be shared with external systems, including AI services. The other options are premature. Selecting tools or deploying models should only occur after policy approval. Linux+ V8 highlights governance-first approaches when adopting automation technologies. Therefore, the correct answer is B.

A Linux administrator receives reports that an application hosted in a system is not completing tasks in the allocated time. The administrator connects to the system and obtains the following details:Which of the following actions can the administrator take to help speed up the jobs?

A Linux systems administrator needs to extract the contents of a file named /home/dev/web.bkp to the /var/www/html/ directory. Which of the following commands should the administrator use?

Which of the following is a characteristic of Python 3?

Which of the following filesystems contains non - persistent or volatile data?

Which of the following best describes journald?

An administrator updates the network configuration on a server but wants to ensure the change will not cause an outage if something goes wrong. Which of the following commands allows the administrator to accomplish this goal?

A Linux administrator needs to create and then connect to the app-01-image container. Which of the following commands accomplishes this task?

A Linux administrator receives reports that an application hosted in a system is not completing tasks in the allocated time. The administrator connects to the system and obtains the following details:Which of the following actions can the administrator take to help speed up the jobs?

Which of the following best describes journald?

An administrator updates the network configuration on a server but wants to ensure the change will not cause an outage if something goes wrong. Which of the following commands allows the administrator to accomplish this goal?

To perform a live migration, which of the following must match on both host servers? (Choose two).

A Linux administrator wants to add a user to the Docker group without changing their primary group. Which of the following commands should the administrator use to complete this task?

An application requires a configuration file be placed in each user's home directory when an account is created.

A Linux user needs to download the latest Debian image from a Docker repository. Which of the following commands makes this task possible?

Which of the following best describes journald?

Which of the following utilities can securely delete a Linux directory from a filesystem and ensure it cannot be recovered? The correct answer is B. shred because it is specifically designed to securely delete data by overwriting files multiple times, making data recovery extremely difficult or practically impossible. In Linux environments, simply deleting a file or directory does not remove the actual data from the disk; instead, it only removes the file's reference from the filesystem. Until that space is overwritten, the data can potentially be recovered using forensic tools. The shred command mitigates this risk by overwriting the contents of files with random data repeatedly before deletion. This aligns with security best practices outlined in Linux+ objectives, particularly in the domain of data protection and secure data disposal. When used with appropriate options (such as recursive handling through scripting or combining with other commands), shred can be applied to files within directories to ensure secure deletion. Option A (dd) is incorrect because while dd can overwrite disks or partitions with zeros or random data, it is not specifically designed for secure deletion of directories and requires careful manual targeting. Misuse can lead to accidental data loss. Option C (unlink) is incorrect because it simply removes a file name from the filesystem, similar to rm, without overwriting the data. Therefore, the data remains recoverable. Option D (rm) is also incorrect because it removes files or directories at the filesystem level but does not securely erase the data. Even with options like -r or -f, it does not overwrite file contents. From a Linux+ security standpoint, shred is the most appropriate utility among the given options for secure data destruction, helping ensure sensitive information cannot be recovered.

Which of the following Ansible components contains a list of hosts and host groups?

A systems administrator is deploying a new custom application. Which of the following commands in the ~/.bashrc file will add $HOME/bin to the PATH variable?

Which of the following utilities supports the automation of security compliance and vulnerability management?

Which of the following describes the method of consolidating system events to a single location?

Which of the following is a characteristic of Python 3?

A systems administrator wants to review the logs from an Apache 2 error.log file in real time and save the information to another file for later review. Which of the following commands should the administrator use?

A systems administrator receives reports about connection issues to a secure web server. Given the following firewall and web server outputs:Which of the following commands best resolves this issue?

A systems administrator receives reports about connection issues to a secure web server. Given the following firewall and web server outputs:Which of the following commands best resolves this issue?

An administrator needs to install an Apache web server on an Ubuntu server.

A Linux administrator creates a Bash script that gets flagged by the CI/CD lint check as using deprecated syntax for the following line: my_var=`grep -i USER1 users.txt` Which of the following should the administrator use to avoid the deprecation notice in the script?

A Linux administrator needs to securely erase the contents of a hard disk. Which of the following commands is the best for this task?

Which of the following is a characteristic of Python 3?

A systems administrator receives reports about connection issues to a secure web server. Given the following firewall and web server outputs Firewall output Status active To Action From 443/tcp DENY Anywhere 443/tcp (v6) DENY Anywhere (v6) Web server output tcp LISTEN 0 4096 *443 Which of the following commands best resolves this issue?

A systems administrator receives reports about connection issues to a secure web server. Given the following firewall and web server outputs:Which of the following commands best resolves this issue?

Which of the following Ansible components contains a list of hosts and host groups?