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CompTIA XK0-006 Exam Syllabus Topics:

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

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CompTIA Linux+ Certification Exam Sample Questions (Q141-Q146):

NEW QUESTION # 141
A Linux user frequently tests shell scripts located in the /home/user/scripts directory. Which of the following commands allows the user to run the program by invoking only the script name?

Answer: C

Explanation:
In Linux, the ability to execute a program by typing only its name depends on whether the directory containing the executable is included in the user's PATH environment variable. The PATH variable defines a colon-separated list of directories that the shell searches when a command is entered.
Option C, export PATH=$PATH:/home/user/scripts, correctly appends the /home/user/scripts directory to the existing PATH variable. Once this command is executed, any executable script located in that directory can be run simply by typing its filename, provided the script has execute permissions. This behavior is explicitly covered in the Linux+ V8 objectives related to environment variables and shell configuration.
The other options are incorrect. Option A incorrectly attempts to redefine the SHELL variable and uses invalid syntax. Option B modifies the TERM variable, which controls terminal type and has nothing to do with command execution. Option D attempts to create an alias using invalid syntax and would not affect command lookup behavior.
Linux+ V8 documentation emphasizes modifying the PATH variable as the standard and recommended method for simplifying script execution. This approach is commonly used by developers and administrators who frequently run custom scripts.
Therefore, the correct answer is C.


NEW QUESTION # 142
To perform a live migration, which of the following must match on both host servers? (Choose two)

Answer: C,E

Explanation:
Comprehensive and Detailed 250 to 350 words of Explanation From Linux+ V8 documents:
Live migration is a virtualization feature that allows a running virtual machine to be moved from one host to another with minimal or no downtime. This topic falls under System Management in the CompTIA Linux+ V8 objectives, particularly in the areas of virtualization and resource management.
For a live migration to succeed, the CPU architecture must match between the source and destination hosts.
This is critical because the running virtual machine's CPU state, instruction set, and registers must be compatible with the destination system. Migrating between different CPU architectures (for example, x86_64 to ARM) is not supported and would cause the virtual machine to fail. Therefore, option D is required.
Additionally, the destination host must have sufficient available memory to accommodate the virtual machine being migrated. During live migration, the memory contents of the running VM are copied from the source host to the destination host while the VM continues to run. If enough memory is not available, the migration cannot complete successfully. This makes option E mandatory.
The other options are not strict requirements. USB ports do not need to match for live migration. Network speed may affect migration performance but does not need to be identical. Available swap space is not directly required for migration. Disk storage paths do not need to match as long as shared storage or compatible storage access is available.
Linux+ V8 documentation emphasizes CPU compatibility and memory availability as core prerequisites for live migration. Therefore, the correct answers are D and E.


NEW QUESTION # 143
A systems administrator is deploying a new secure web server but is having issues starting it.
The administrator reviews the following outputs:

Which of the following commands fixes this issue while following security best practices?

Answer: A

Explanation:
The web server is running with SELinux in enforcing mode, and Apache is denied permission to bind to TCP port 1234 because that port is not labeled for HTTP services. Adding port 1234 to the
http_port_t SELinux type allows Apache to bind to the port while keeping SELinux enforcing, which follows security best practices.


NEW QUESTION # 144
Which of the following commands sets all the directories' permissions recursively in the user's home directory and as accessible only to the user?

Answer: D

Explanation:
This command searches for all directories within the user's home directory and sets their permissions to allow access only by the owning user, ensuring privacy and proper access control.


NEW QUESTION # 145
A systems administrator is configuring new Linux systems and needs to enable passwordless authentication between two of the servers. Which of the following commands should the administrator use?

Answer: A

Explanation:
ssh-keygen -t rsa generates an RSA key pair.
ssh-copy-id -i ~/.ssh/id_rsa.pub john@server2 copies the public key to the remote server's authorized_keys, enabling passwordless login.


NEW QUESTION # 146
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