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| Certification Vendor: | CompTIA |
|---|---|
| Exam Name: | CompTIA Linux+ Certification Exam (XK0-006) |
| Exam Number: | XK0-006 |
| Real Exam Qty: | Maximum 90 |
| Available Languages: | English |
| Exam Price: | Approximately USD 358 (varies by region) |
| Related Certifications: | CompTIA Security+ CompTIA Network+ CompTIA A+ |
| Exam Format: | Performance-based questions (PBQs), Multiple-choice questions |
| Exam Duration: | 90 minutes |
| Certificate Validity Period: | 3 years |
| Passing Score: | 720 (on a scale of 100โ900) |
| Recommended Training: | CompTIA CertMaster Learn (Linux+ XK0-006) CompTIA Official Training Resources |
| Exam Registration: | CompTIA Linux+ Official Certification Page Pearson VUE Exam Registration |
| Sample Questions: | CompTIA XK0-006 Sample Questions |
| Exam Way: | Online (proctored) or onsite testing via Pearson VUE centers |
| Pre Condition: | No mandatory prerequisites, but 12โ24 months of Linux administration experience or CompTIA A+ / Network+ knowledge is recommended. |
| Official Syllabus URL: | https://www.comptia.org/certifications/linux |
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NEW QUESTION # 199
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, and not all 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.
Answer:
Explanation:
see the solution in Explanation below.
Explanation:
This performance-based question tests correct use of the tar utility for backup and restore operations, which is part of System Management in CompTIA Linux+ V8. The key detail is that the backup is explicitly described as uncompressed, so the correct archive file must be a plain .tar file rather than .tar.gz, .tgz, or .tar.bz2.
For the backup command, the correct syntax is:
tar -cvf /backups/application.tar -C /opt/ application
Here, -c creates the archive, -v enables verbose output, and -f specifies the archive filename. The -C /opt/ option changes to the /opt/ directory before archiving, and application is then archived relative to that location. This is the correct Linux+ method because it avoids storing unnecessary leading path components in the archive.
For the restore command, the correct syntax is:
tar -xvf /backups/application.tar -C /opt/
Here, -x extracts the archive, -v displays files being restored, and -f identifies the archive file. The -C /opt/ option ensures the archived application directory is restored back into /opt/, recreating /opt/application correctly.
The other file choices such as /backups/application.tar.gz, /backups/application.tgz, and /backups/application.
tar.bz2 are incorrect because they indicate compressed backups, which the question specifically rules out.
Likewise, options such as -xzvf or -xjvf are used for gzip- or bzip2-compressed archives and would not apply here.
Therefore, the verified correct PBQ answers are:
Backup: tar -cvf /backups/application.tar -C /opt/ application
Restore: tar -xvf /backups/application.tar -C /opt/
NEW QUESTION # 200
Which of the following is a reason multiple password changes on the same day are not allowed?
Answer: D
Explanation:
Password policy enforcement is a critical component of system security covered in the CompTIA Linux+ V8 objectives. One common control implemented in Linux systems is restricting how frequently users can change their passwords, often referred to as minimum password age enforcement.
The primary reason multiple password changes within a short time frame are not allowed is to prevent password cycling attacks. Without this restriction, a user could repeatedly change their password in quick succession to bypass password history controls and eventually reuse a previously compromised or weak password. Option C accurately describes this scenario and aligns directly with Linux+ V8 security guidance.
Linux systems enforce this behavior through tools such as chage and PAM (Pluggable Authentication Modules). Administrators can configure minimum password age values to ensure users must wait a defined period before changing passwords again. This ensures that password history requirements are effective and meaningful.
The other options are incorrect. Option A confuses password expiration with brute-force mitigation, which is typically addressed through account lockout policies. Option B refers to password complexity, which is enforced through character requirements rather than change frequency. Option D is unrelated, as password expiration policies do not enforce multifactor authentication.
Linux+ V8 documentation emphasizes layered access controls, and preventing password reuse through enforced timing restrictions is a core principle of secure authentication design.
Therefore, the correct answer is C.
NEW QUESTION # 201
Which of the following is the first step when starting a new Python project on a Linux system?
Answer: C
Explanation:
The correct answer is A. python -m venv /path/to/project because creating a virtual environment is the recommended first step when starting a new Python project. A virtual environment isolates project dependencies from the system-wide Python installation, ensuring that libraries and package versions do not conflict with other projects or system components.
The command python -m venv /path/to/project creates a self-contained directory that includes its own Python interpreter, libraries, and scripts. This allows developers and administrators to install packages specific to the project without affecting the global environment. After creating the virtual environment, the next steps typically include activating it (e.g., source /path/to/project/bin/activate) and then installing dependencies using pip.
Option B (python -m pip install -r /path/to/project) is incorrect because installing dependencies from a requirements file assumes that a virtual environment or project structure is already in place. It is not the first step.
Option C (export PYTHON_PATH=/path/to/project) is incorrect because setting PYTHONPATH only modifies where Python looks for modules. It does not create an isolated environment or manage dependencies.
Option D (python -m source /path/to/project) is incorrect because source is a shell built-in command used to activate environments, not a Python module, and this syntax is invalid.
From a Linux+ perspective, using virtual environments aligns with best practices in automation and scripting.
It ensures consistency, reproducibility, and isolation of development environments, which is critical for deployment, testing, and maintaining Python-based applications.
NEW QUESTION # 202
A Linux administrator needs to create and then connect to the app-01-image container. Which of the following commands accomplishes this task?
Answer: B
Explanation:
Comprehensive and Detailed 250 to 350 words of Explanation From Linux+ V8 documents:
Container lifecycle management is a core topic within the Automation, Orchestration, and Scripting domain of CompTIA Linux+ V8. Administrators must understand the difference between creating containers, starting containers, and executing commands within running containers.
The correct command is docker run -it app-01-image. The docker run command performs three actions at once: it creates a new container from the specified image, starts the container, and optionally attaches the administrator's terminal to it. The -i option keeps standard input open, while the -t option allocates a pseudo- terminal (TTY). Together, these options allow the administrator to interactively connect to the container immediately after it is created.
The other options are incorrect for the following reasons. docker start is used only to start an existing stopped container and does not create a new container from an image. Additionally, -t and -d are not valid options for attaching an interactive terminal during container startup. docker build is used to build a Docker image from a Dockerfile and cannot be used to create or connect to a container. docker exec is used to run commands inside an already running container and therefore cannot be used to create a container.
Linux+ V8 documentation emphasizes that docker run is the primary command used when administrators want to instantiate containers from images and interact with them. This command is commonly used during testing, development, and troubleshooting workflows.
NEW QUESTION # 203
A DevOps engineer needs to create a local Git repository. Which of the following commands should the engineer use?
Answer: A
Explanation:
The correct answer is A. git init because it is the command used to initialize a new local Git repository in a directory. When executed, git init creates a hidden .git directory that contains all the necessary metadata and configuration files required for version control. This action effectively turns the current directory into a Git repository, allowing the user to begin tracking changes.
In a DevOps and automation context, initializing repositories is a foundational task. It enables version control for scripts, configuration files, and infrastructure-as-code, which are critical components in modern Linux environments. Once the repository is initialized, the engineer can proceed with adding files (git add) and committing changes (git commit).
Option B (git clone) is incorrect because it is used to copy an existing remote repository to a local system. It does not create a new repository from scratch but instead duplicates an already initialized one.
Option C (git config) is incorrect because it is used to configure Git settings such as username, email, and preferences. It does not initialize a repository.
Option D (git add) is incorrect because it stages changes for commit within an already initialized repository. It cannot be used before a repository is created.
From a Linux+ perspective, understanding Git operations is essential under automation and orchestration topics. Tools like Git support collaboration, change tracking, and deployment workflows. The git init command represents the starting point for managing code and configuration in a controlled and versioned manner, making it a critical skill for system administrators and DevOps engineers.
NEW QUESTION # 204
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