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| Certification Vendor: | CompTIA |
|---|---|
| Exam Name: | CompTIA Linux+ Certification Exam |
| Exam Number: | XK0-006 |
| Exam Format: | Multiple-choice, Performance-based |
| Real Exam Qty: | Maximum of 90 |
| Related Certifications: | CompTIA Linux+ |
| Exam Price: | USD 348 |
| Certificate Validity Period: | 3 years |
| Passing Score: | 720 (on a scale of 100–900) |
| Exam Duration: | 90 minutes |
| Available Languages: | English |
| Sample Questions: | CompTIA XK0-006 Sample Questions |
| Exam Way: | Online (via Pearson VUE) or In-person at Pearson VUE testing centers |
| Pre Condition: | No formal prerequisites; recommended 12 months of hands-on experience with Linux administration |
| Official Syllabus URL: | https://www.comptia.org/en-us/certifications/linux |
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NEW QUESTION # 48
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 # 49
Which of the following describes the method of consolidating system events to a single location?
Answer: B
Explanation:
Consolidating system events from multiple sources into a single, centralized location is a key concept in Linux system administration and is explicitly covered under logging and monitoring topics in the CompTIA Linux+ V8 objectives. This method is known as log aggregation, making option A the correct answer.
Log aggregation refers to the practice of collecting logs generated by operating systems, services, applications, and network devices and storing them in a centralized repository. In Linux environments, logs may originate from systemd-journald, syslog, application-specific log files, containers, and cloud-based workloads. Aggregating these logs allows administrators to analyze events more efficiently, correlate issues across systems, and improve troubleshooting, auditing, and security monitoring.
Linux+ V8 documentation emphasizes centralized logging as a best practice in environments with multiple servers. Without log aggregation, administrators would need to log in to each system individually to inspect logs, which is inefficient and error-prone. Centralized solutions such as syslog servers, ELK/EFK stacks, and SIEM platforms enable real-time analysis, long-term retention, and alerting based on log data.
The other options do not describe log consolidation. Health checks are used to verify whether services or systems are operational but do not collect or store event data. Webhooks are HTTP-based callbacks used for event-driven automation and notifications, not for storing logs. Threshold monitoring involves generating alerts when metrics exceed defined limits, such as CPU or memory usage, but it does not centralize system event records.
Linux+ V8 stresses that effective log aggregation improves incident response, supports compliance requirements, and enhances system visibility. It is especially important for detecting security incidents, diagnosing failures, and performing root-cause analysis across distributed systems.
NEW QUESTION # 50
A Linux administrator wants to use AI to deploy infrastructure as code. Which of the following is a best practice regarding the use of AI for this task?
Answer: D
Explanation:
Linting ensures that AI-generated infrastructure-as-code (IaC) follows proper syntax, formatting, and best practices. This helps prevent errors, enforces consistency, and improves security before deployment.
NEW QUESTION # 51
A user states that an NFS share Is reporting random disconnections. The systems administrator obtains the following information
Which of the following best explains the symptoms that are being reported?
Answer: A
Explanation:
This issue is best analyzed using a layered troubleshooting approach, as recommended in the Troubleshooting domain of CompTIA Linux+ V8. The reported symptom is intermittent or random disconnections from an NFS share, which commonly indicates a network reliability issue rather than a configuration or filesystem problem.
The most critical evidence comes from the output of ip -s link show. The network interface enp1s0 is reporting significant numbers of errors and dropped packets on both the receive (RX) and transmit (TX) paths. High packet loss at the network interface level directly affects protocols like NFS, which rely on stable, continuous TCP/IP communication. When packets are dropped or corrupted, NFS clients may experience timeouts, retransmissions, and apparent disconnections.
Although the df -h output shows that the NFS filesystem is 95% full, this alone does not typically cause random disconnections. A nearly full filesystem may lead to write failures or performance degradation, but it does not explain intermittent connectivity loss. Linux+ V8 documentation notes that filesystem capacity issues usually present as I/O errors, not transport-layer disconnects.
Options A and B can also be ruled out. If the mount point or IP address were incorrect, the NFS share would fail consistently rather than intermittently. The fact that the share is mounted and accessible confirms that the mount configuration and IP addressing are correct.
Linux+ V8 emphasizes that NFS performance and reliability are highly sensitive to network quality. Packet errors, drops, faulty NICs, cabling issues, duplex mismatches, or driver problems commonly result in unstable NFS behavior.
Therefore, the best explanation for the reported random disconnections is D. The interface is reporting a high number of errors and dropped packets.
NEW QUESTION # 52
A systems administrator needs to write a script that counts the number of times "FAIL" appears in a log file. If "FAIL" appears zero times, then the administrator would like to print the message
"SUCCESS." Given the following:
Which of the following should be used before the zero to complete the script?
Answer: D
Explanation:
The test should check if the count of "FAIL" equals zero. The operator -eq is used for numeric equality in shell conditionals, so [ $(grep -c FAIL /var/file.log) -eq 0 ] correctly evaluates whether the count is zero.
NEW QUESTION # 53
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