2026 Actual CompTIA XK0-006 Dumps, Updated Exam Questions for Guaranteed Pass

XK0-006 free sample questions and answers

CompTIA XK0-006 practice quiz with correct answers for search indexing.

1. Question 1

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

   Adocker image init debian
   

   Bdocker image pull debian
   

   Cdocker image import debian
   

   Ddocker image save debian
   

   Correct answer: B

   The correct answer is B. docker image pull debian because it is the standard Docker command used to download container images from a remote repository such as Docker Hub. In Docker terminology, ''pulling'' an image means retrieving it from a remote registry and storing it locally so it can be used to create containers.

   When a user executes docker image pull debian, Docker connects to the default registry (Docker Hub), searches for the official Debian image, and downloads the latest version (by default, the ''latest'' tag unless otherwise specified). This command is essential in container-based workflows and is commonly used in automation, orchestration, and DevOps environments.

   Option A (docker image init debian) is incorrect because there is no valid Docker command called init under docker image. Initialization of containers is handled differently, typically via docker run.

   Option C (docker image import debian) is incorrect because import is used to create a Docker image from a local tarball or file, not to download from a remote repository.

   Option D (docker image save debian) is incorrect because save is used to export an existing local image into a tar archive for backup or transfer purposes. It does not download images.

   From a Linux+ perspective, understanding container management is a key part of automation and orchestration. Commands like docker pull allow administrators to quickly provision environments, deploy applications, and maintain consistency across systems. This makes it a fundamental skill for modern Linux system administration and DevOps practices

   
   

2. Question 2

   Which of the following commands would a Linux administrator use to determine the temperature of a motherboard?

   Aipmitool
   

   Bdmidecode
   

   Clspci
   

   Dlm_sensors
   

   Correct answer: D

   The correct answer is D. lm_sensors because it is the standard Linux utility used to monitor hardware sensor data, including motherboard temperature, CPU temperature, fan speeds, and voltage levels. The lm_sensors package provides tools such as the sensors command, which reads data from hardware monitoring chips embedded on the motherboard and displays real-time environmental and thermal information.

   In Linux system management, monitoring hardware health is critical for maintaining system stability and preventing overheating issues. After installing and configuring lm_sensors (typically using the sensors-detect command), administrators can run sensors to view temperature readings for various components, including the motherboard chipset.

   Option A (ipmitool) is partially related but incorrect in this context. While ipmitool can retrieve hardware monitoring data (including temperature) via IPMI interfaces, it requires compatible server hardware with IPMI support. It is not universally applicable across all Linux systems and is more specialized for enterprise server environments.

   Option B (dmidecode) is incorrect because it retrieves hardware information from the system BIOS/firmware, such as manufacturer details, serial numbers, and hardware specifications. It does not provide real-time sensor data like temperature readings.

   Option C (lspci) is also incorrect because it lists PCI devices and provides information about connected hardware components, but it does not include environmental or thermal data.

   From a Linux+ perspective, lm_sensors is the most appropriate and commonly used tool for monitoring system temperatures and other hardware metrics, making it essential for proactive system management and troubleshooting.

   
   

3. Question 3

   An administrator receives a report that a user is unable to execute the runreports utility. The administrator logs in as the user, runs the following commands, and receives the following output:

   $ runreports

   runreports: command not found

   $ ls -l /usr/local/bin

   -rwxr-xr-x 1 root root 29 May 10 11:31 runreports

   $ echo $PATH

   /usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin

   Which of the following best describes the issue and how to resolve it?

   AThe runreports utility is not in the user's path. The administrator should modify the .bash_profile file.
   

   BThe runreports utility is a shell script but not owned by the user. The administrator should use chown.
   

   CThe user does not have the correct SELinux context. The administrator should modify the SELinux template.
   

   DThe runreports utility does not have execute permissions. The administrator should add execute permissions.
   

   Correct answer: A

   In Linux, for a command to be executed by its name alone (without an absolute or relative path), the directory containing the executable must be listed in the user's PATH environment variable. According to the CompTIA Linux+ V8 objectives, troubleshooting 'command not found' errors requires an investigation of the binary's location versus the current PATH configuration.

   In this scenario, the utility runreports is located in /usr/local/bin. However, the output of echo $PATH reveals that /usr/local/bin is not present in the search directories. The current PATH includes /usr/sbin, /usr/bin, /sbin, /bin, and others, but specifically excludes the location of the utility. Because the shell cannot find the file in any of its defined search paths, it returns 'command not found.'

   To resolve this issue permanently for the user, the administrator should add /usr/local/bin to the user's PATH by modifying a shell initialization file, such as ~/.bash_profile or ~/.bashrc. Adding the line export PATH=$PATH:/usr/local/bin ensures the directory is included in future sessions.

   The other options are incorrect based on the provided evidence. Option B is wrong because the ls -l output shows the file has r-x permissions for 'others,' meaning the user can already execute it despite not being the owner. Option C is unlikely because SELinux typically results in 'Permission Denied,' not 'Command Not Found.' Option D is also incorrect as the ls -l output clearly shows the execute (x) bit is already set for all users (755).

   Therefore, the missing PATH entry is the verified root cause.

   
   

4. Question 4

   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?

   Adnf history
   

   Bdnf list
   

   Cdnf info
   

   Ddnf search
   

   Correct answer: A

   Package management troubleshooting is a critical Linux administration skill addressed in CompTIA Linux+ V8. After system patching, identifying which packages were installed, updated, or removed is often the first step in diagnosing application failures.

   The dnf history command is specifically designed for this purpose. It displays a chronological list of all DNF transactions, including installations, upgrades, downgrades, and removals. Each transaction is assigned an ID and includes timestamps, affected packages, and actions taken. This allows administrators to correlate application failures with recent changes.

   Option A is correct because it provides historical context rather than just current package state. Linux+ V8 documentation highlights dnf history as an essential auditing and rollback tool.

   The other options are insufficient. dnf list shows installed or available packages but does not indicate when they were installed. dnf info displays metadata for a specific package but does not show transaction history. dnf search is used to find packages by name or description.

   By reviewing recent transactions with dnf history, administrators can quickly identify problematic updates and take corrective action, such as rolling back a package.

   Therefore, the correct answer is A.

   
   

5. Question 5

   The security manager at a company notifies a systems administrator of open vulnerabilities on the Linux system. The administrator receives the following information while logged in to the server:

   $ date

   Thu Jul 11 16:12:42 UTC 2024

   $ getenforce

   Enforcing

   $ dnf history

   ID | Command Line | Date and time | Action(s) | Altered

   45 | update -y | 2023-07-09 | Update | 27

   46 | install httpd | 2023-01-11 | Install | 9

   47 | update -y | 2023-08-08 | Upgrade | 44

   Which of the following is the most likely security concern?

   AThe server has not been updated in a year and should be patched.
   

   BThe system has httpd installed and needs to be removed.
   

   CThe system is configured to use UTC time and should be set to EDT.
   

   DThe system has SELinux set to enforcing and needs to be disabled.
   

   Correct answer: A

   Maintaining system security requires regular patching and updates to mitigate vulnerabilities. In this scenario, the administrator is presented with the current system date (July 11, 2024) and a history of package management transactions via the dnf history command. The last recorded update transaction (ID 47) occurred on August 8, 2023. This indicates that the system has gone nearly a full year without receiving security patches or software updates.

   According to CompTIA Linux+ V8 security best practices, 'unpatched systems' represent one of the most significant risks to an organization's infrastructure. New vulnerabilities (CVEs) are discovered constantly, and vendors release patches to address these flaws. A system that has not been updated in a year is likely susceptible to numerous exploits that have been patched in more recent software versions. Therefore, the primary security concern is the lack of recent updates.

   The other options are not valid security concerns in this context. While httpd (Apache) may have vulnerabilities if unpatched, its mere presence (Option B) is not inherently a security concern if the service is required for business operations. Option C refers to the time zone configuration (UTC vs. EDT), which has no impact on system security. Option D suggests disabling SELinux; however, SELinux in 'Enforcing' mode is actually a security best practice that provides Mandatory Access Control (MAC) to protect the system. Disabling it would weaken the system's security posture rather than improve it.

   The verified answer is that the server requires immediate patching due to the elapsed time since its last update.