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CompTIA XK0-006 Exam Syllabus Topics:

TopicDetails
Topic 1
  • Troubleshooting: Addresses diagnosing and resolving issues across system health, hardware, storage, networking, security configurations, and performance optimization.
Topic 2
  • Automation, Orchestration, and Scripting: Covers task automation with tools like Ansible, shell and Python scripting, Git version control, and responsible AI-assisted development.
Topic 3
  • Security: Focuses on securing Linux systems through authentication, firewalls, OS hardening, account policies, cryptography, and compliance checks.
Topic 4
  • Services and User Management: Covers day-to-day Linux administration including file management, user accounts, processes, software, services, and container operations.

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CompTIA Linux+ Certification Exam Sample Questions (Q138-Q143):

NEW QUESTION # 138
A DevOps engineer needs to create a local Git repository. Which of the following commands should the engineer use?

Answer: A


NEW QUESTION # 139
Which of the following commands should an administrator use to see a full hardware inventory of a Linux system?

Answer: A

Explanation:
dmidecode retrieves detailed hardware information from the system's DMI/SMBIOS, including BIOS, CPU, memory, and motherboard details, providing a full hardware inventory.


NEW QUESTION # 140
Which of the following describes what Ansible is used for in the context of IT infrastructure?

Answer: C

Explanation:
The correct answer is B. Configuration management because Ansible is primarily designed as an automation and configuration management tool used to manage IT infrastructure efficiently. Within Linux environments, Ansible allows system administrators to define the desired state of systems using human-readable YAML- based playbooks. These playbooks automate tasks such as software installation, system updates, service configuration, and deployment processes across multiple machines.
Ansible operates in an agentless architecture, meaning it does not require additional software to be installed on managed nodes. Instead, it uses standard protocols such as SSH to communicate with remote systems. This makes it lightweight and easy to deploy compared to other configuration management tools. In the Linux+ context, understanding automation tools like Ansible is essential for maintaining consistency across systems, reducing manual configuration errors, and improving operational efficiency.
Option A (Database management) is incorrect because Ansible is not specifically designed to manage or administer databases, although it can automate database-related tasks. Option C (Process management) is incorrect because process management refers to controlling running processes (e.g., using commands like ps, kill, or top), which is not Ansible's primary function. Option D (Asset management) is also incorrect because asset management involves tracking hardware and software inventory, which is outside the scope of Ansible's core capabilities.
In modern Linux system administration, tools like Ansible are widely used for orchestration and configuration management, enabling administrators to automate repetitive tasks, enforce system consistency, and scale infrastructure management effectively.


NEW QUESTION # 141
A Linux administrator attempts to log in to a server over SSH as root and receives the following error message: Permission denied, please try again. The administrator is able to log in to the console of the server directly with root and confirms the password is correct. The administrator reviews the configuration of the SSH service and gets the following output:

Based on the above output, which of the following will most likely allow the administrator to log in over SSH to the server?

Answer: C

Explanation:
The SSH configuration option PermitRootLogin prohibit-password prevents the root user from logging in with password authentication. This setting means root cannot use a password to log in via SSH; only key- based authentication is permitted for root. The administrator can still log in as root locally, which is not affected by this SSH configuration. To allow SSH access as root, the administrator must use an SSH key instead of a password.
Other options:
* A. MaxSessions controls the number of simultaneous SSH sessions but is not causing the login denial here.
* B. PAM (Pluggable Authentication Modules) is disabled, but enabling it is not required for basic SSH authentication.
* C. Changing the SSH port is unrelated to the authentication method issue.
Reference:
CompTIA Linux+ Study Guide: Exam XK0-006, Sybex, Chapter 11: "Securing Linux", Section: "Securing SSH Access" CompTIA Linux+ XK0-006 Objectives, Domain 3.0: Security


NEW QUESTION # 142
While hardening a system, an administrator runs a port scan with Nmap, which returned the following output:

Which of the following is the best way to address this security issue?

Answer: A

Explanation:
Port 23/tcp indicates Telnet, which is insecure because it transmits data in plaintext. The best hardening approach is to disable and remove the Telnet service entirely, eliminating the vulnerability rather than just blocking it at the firewall. Secure alternatives like SSH should be used instead.


NEW QUESTION # 143
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