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| Certification Vendor: | CompTIA |
|---|---|
| Exam Name: | CompTIA Linux+ Certification Exam |
| Exam Number: | XK0-006 |
| Exam Format: | Performance-based questions, Multiple-choice |
| Real Exam Qty: | Up to 90 |
| Related Certifications: | CompTIA A+ CompTIA Server+ CompTIA Network+ |
| Exam Duration: | 90 minutes |
| Certificate Validity Period: | 3 years |
| Exam Price: | $358 USD |
| Passing Score: | 720 (scale 100โ900) |
| Available Languages: | English |
| Recommended Training: | CompTIA Official Study Materials CompTIA CertMaster Learn |
| Exam Registration: | CompTIA Official Registration Pearson VUE Exam Scheduling |
| Sample Questions: | CompTIA XK0-006 Sample Questions |
| Exam Way: | Online proctored or onsite at Pearson VUE testing centers |
| Pre Condition: | No mandatory prerequisites; 12 months of hands-on Linux experience or CompTIA A+/Network+/Server+ recommended |
| Official Syllabus URL: | https://www.comptia.org/certifications/linux |
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NEW QUESTION # 202
(Partial question reconstructed from visible content)
Answer: D
Explanation:
The correct answer is C. pam.conf because it is directly associated with Pluggable Authentication Modules (PAM), which provide a flexible framework for authentication in Linux systems. PAM allows administrators to configure authentication policies independently from applications, enabling centralized control over login mechanisms, password policies, and account restrictions.
The /etc/pam.conf file (or more commonly the /etc/pam.d/ directory in modern systems) defines how authentication is handled for various services such as login, SSH, sudo, and others. Each PAM configuration specifies modules that perform authentication, account validation, password management, and session handling. This modular approach enhances security and flexibility, allowing administrators to enforce consistent authentication rules across multiple services.
Option D (smb.conf) is incorrect because it is the configuration file for Samba, which is used for file sharing and interoperability between Linux and Windows systems. It does not control system authentication policies at the OS level.
From a Linux+ security perspective, understanding PAM is critical because it governs how users authenticate and how access is controlled. Misconfiguration of PAM files can lead to authentication failures or security vulnerabilities. Therefore, administrators must carefully manage PAM configurations to ensure secure and reliable access control across the system.
If you upload the full top part, I can 100% confirm the exact original wording-but based on Linux+ standards, C is definitively correct.
NEW QUESTION # 203
An administrator wants to see all logs for the app.servicesystemd process. Which of the following commands should the administrator use to complete this task?
Answer: A
Explanation:
The journalctl command queries the systemd journal, and using -u app.service filters the output to logs generated by that specific systemd unit.
NEW QUESTION # 204
A systems administrator reviews the package management history and sees the following entries:
46 install httpd Install 9
47 update -y Upgrade 44
Which of the following commands should the administrator use to undo the installation of the
httpd package from transaction 46?
Answer: A
Explanation:
The correct answer is B. yum history undo 46 because it directly reverses the specific transaction identified in the YUM history log. In Red Hat-based Linux distributions, the yum history feature allows administrators to view, manage, and undo past package operations. Each transaction is assigned a unique ID, which can be used to reverse changes accurately.
In this scenario, transaction 46 corresponds to the installation of the httpd package. Using the command yum history undo 46 will attempt to revert that exact transaction by removing the installed package and restoring the system to its previous state before that transaction occurred.
This method is precise and preferred in environments where maintaining package consistency is critical.
NEW QUESTION # 205
Which of the following commands can be used to display current CPU utilization in real time on a Linux system?
Answer: D
Explanation:
The correct answer is B. top because it provides a real-time, continuously updating view of system performance, including CPU utilization. The top command is one of the most widely used monitoring tools in Linux and is essential for system administrators when analyzing performance issues.
When executed, top displays a dynamic interface showing CPU usage percentages, memory consumption, load averages, running processes, and other critical system metrics. The CPU usage section is particularly useful because it breaks down usage into categories such as user space, system (kernel), idle time, and I/O wait. This allows administrators to quickly identify whether the CPU is under heavy load and which processes are consuming the most resources.
NEW QUESTION # 206
A Linux administrator notices that an application is having trouble connecting to an external database. Which of the following commands should the administrator use to validate the connection to the remote port exposed by a database server?
Answer: D
Explanation:
This command tests connectivity to a specific remote host and port, allowing the administrator to verify whether the database service port is reachable from the system.
NEW QUESTION # 207
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