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| Certification Vendor: | CompTIA |
|---|---|
| Exam Name: | CompTIA Linux+ Certification Exam (XK0-006) |
| Exam Number: | XK0-006 |
| Certificate Validity Period: | 3 years |
| Passing Score: | 720 (on a scale of 100–900) |
| Exam Price: | Approximately USD 358 (varies by region) |
| Real Exam Qty: | Maximum 90 |
| Available Languages: | English |
| Related Certifications: | CompTIA Security+ CompTIA Network+ CompTIA A+ |
| Exam Duration: | 90 minutes |
| Exam Format: | Performance-based questions (PBQs), Multiple-choice questions |
| Recommended Training: | CompTIA Official Training Resources CompTIA CertMaster Learn (Linux+ XK0-006) |
| Exam Registration: | Pearson VUE Exam Registration CompTIA Linux+ Official Certification Page |
| Sample Questions: | CompTIA XK0-006 Sample Questions |
| Exam Way: | Online (proctored) or onsite testing via Pearson VUE centers |
| Pre Condition: | No mandatory prerequisites, but 12–24 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 # 22
Which of the following cryptographic functions ensures a hard drive is encrypted when not in use?
Answer: C
Explanation:
LUKS (Linux Unified Key Setup) provides full-disk encryption, ensuring that the data on a hard drive is protected and unreadable when the system is powered off or the drive is not in use.
NEW QUESTION # 23
Which of the following most accurately describes a webhook?
Answer: C
Explanation:
A webhook is an HTTP-based callback that allows one system to send real-time data or notifications to another system when an event occurs.
NEW QUESTION # 24
Which of the following passwords is the most complex?
Answer: C
Explanation:
Password complexity is a fundamental concept within the Security domain of CompTIA Linux+ V8. Complex passwords significantly reduce the risk of successful brute-force, dictionary, and credential-stuffing attacks.
Linux+ emphasizes evaluating passwords based on length, character variety, unpredictability, and resistance to common word patterns.
Option C, H3s@1dSh3t0|d, is the most complex password among the choices. It demonstrates strong security characteristics by incorporating:
Uppercase letters (H, S)
Lowercase letters (s, d, t)
Numbers (3, 1, 0)
Multiple special characters (@, |)
A longer overall length compared to some other options
Additionally, option C uses character substitution (leet-style) in a way that breaks up recognizable words more effectively than the other choices. This significantly increases entropy and makes the password harder to guess using rule-based or hybrid cracking techniques.
Option A includes uppercase letters and numbers but lacks special characters and is relatively short. Option B includes special characters and mixed case, but it still closely resembles readable words, making it more susceptible to dictionary-based attacks. Option D uses only alphabetic characters and clear word patterns, making it the weakest choice.
Linux+ V8 documentation highlights that the strongest passwords combine length with diverse character classes and minimal predictability. Password C best meets all of these criteria and would score highest against common password-cracking strategies.
Therefore, the correct answer is C. H3s@1dSh3t0|d.
NEW QUESTION # 25
An administrator must secure an account for a user who is going on extended leave. Which of the following steps should the administrator take? (Choose two).
Answer: D,F
Explanation:
passwd -l user locks the user's account by disabling the password, preventing logins.
Change the user's shell to /sbin/nologin ensures the account cannot be used for interactive logins, further securing it.
NEW QUESTION # 26
A systems administrator is decommissioning a service. Which of the following commands should the administrator use to make sure users cannot start the service again?
Answer: B
Explanation:
The correct answer is A. systemctl mask service because masking a service ensures that it cannot be started manually or automatically under any circumstances. When a service is masked, its unit file is linked to /dev
/null, effectively making it impossible for systemd to start the service. This is the most appropriate action when permanently decommissioning a service and ensuring that no user or process can restart it.
Option D (systemctl disable service) is a common distractor but is incorrect in this context. Disabling a service only prevents it from starting automatically at boot time; however, users with sufficient permissions can still manually start the service using systemctl start. Therefore, it does not fully meet the requirement of preventing the service from being started again.
Option B (systemctl kill service) is incorrect because it only terminates the currently running instance of the service. It does not prevent the service from being restarted later, either manually or automatically.
Option C (systemctl isolate service) is also incorrect. The isolate command is used to switch the system to a different target (similar to changing runlevels), not to manage the long-term availability of a specific service.
In Linux system administration, particularly within the Linux+ objectives, understanding the difference between stop, disable, and mask is critical. While stopping halts a service temporarily and disabling prevents automatic startup, masking is the strongest control, ensuring the service cannot be activated at all. This makes it the correct and secure choice when decommissioning services in production environments.
NEW QUESTION # 27
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