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Which of the following is the main reason for setting up password expiry policies?
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B
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Explanation
Password management is a core topic in the Security domain of CompTIA Linux+ V8. Password expiry policies are implemented to reduce the risk associated with long-lived credentials. The primary reason for enforcing password expiration is to mitigate the risk of exposed or compromised passwords. If a password is leaked through phishing, malware, keylogging, or data breaches, limiting its lifespan reduces the window of opportunity for attackers to exploit it. Requiring periodic password changes ensures that compromised credentials eventually become invalid. Option B correctly captures this security objective. Linux+ V8 documentation emphasizes minimizing credential exposure as a key principle of access control. The other options are secondary or incorrect. Avoiding password reuse and increasing complexity are addressed through password history and complexity policies, not expiration alone. Password expiry does not force passwordless authentication, making option C incorrect. Therefore, the correct answer is B. To mitigate the use of exposed passwords. |
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?
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A
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Explanation
In Git-based workflows, especially those used in DevOps environments, it is common for administrators to have uncommitted local changes while needing to retrieve updates from a remote repository. Linux+ V8 emphasizes understanding how to safely manage local modifications during synchronization operations. The command git stash is specifically designed for this scenario. It temporarily saves (or “stashes”) local changes in a stack-like structure and reverts the working directory to a clean state that matches the current HEAD. This allows the administrator to perform operations such as git pull without conflicts. Later, the stashed changes can be reapplied using git stash apply or git stash pop. The other options are incorrect. git pull retrieves and merges remote changes but will fail or cause conflicts if local modifications exist. git merge combines branches and does not save uncommitted changes. git fetch downloads remote references but does not address local working directory changes. Linux+ V8 documentation highlights git stash as a safe and reversible way to protect local work during repository updates. Therefore, the correct answer is A. |
A systems administrator receives reports from users who are having issues while trying to modify newly created files in a shared directory. The administrator sees the following outputs:
Which of the following provides the best resolution to this issue?
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D
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Explanation
This scenario involves shared directory collaboration, which is a common system management task covered in the CompTIA Linux+ V8 objectives. The key issue is that users can create files in the shared directory, but other users in the same group cannot modify those files. This behavior is directly related to group ownership inheritance. By default, when a user creates a file or directory, it is owned by the user and assigned the user’s primary group, not necessarily the group of the parent directory. As shown in the output, files inside /share are owned by different groups (student, student2, student3), which prevents other group members from modifying them, even though the parent directory is group-writable. The correct solution is to set the setgid (set group ID) bit on the shared directory, making option D correct. When the setgid bit is applied to a directory, all newly created files and subdirectories inherit the group ownership of the parent directory, rather than the creator’s primary group. This ensures consistent group ownership and allows all members of the shared group to collaborate effectively. The other options are incorrect or poor practice. Option A (setuid) is intended for executables, not directories. Option B requires constant manual intervention and does not scale. Option C weakens security by granting write access to all users, violating the principle of least privilege. Linux+ V8 documentation explicitly recommends using the setgid bit on shared directories to manage collaborative access securely and efficiently. |
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Find answers to the most common questions about the CompTIA XK0-006 exam, including what it is, how to prepare, and how it can boost your career.
The CompTIA XK0-006 certification is a globally-acknowledged credential that is awarded to candidates who pass this certification exam by obtaining the required passing score. This credential attests and validates the candidates' knowledge and hands-on skills in domains covered in the CompTIA XK0-006 certification syllabus. The CompTIA XK0-006 certified professionals with their verified proficiency and expertise are trusted and welcomed by hiring managers all over the world to perform leading roles in organizations. The success in CompTIA XK0-006 certification exam can be ensured only with a combination of clear knowledge on all exam domains and securing the required practical training. Like any other credential, CompTIA XK0-006 certification may require periodic renewal to stay current with new innovations in the concerned domains.