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>> XK0-006 Reliable Test Topics <<
To advance your career, take the CompTIA Linux+ Certification Exam exam. Your CompTIA Linux+ Certification Exam demonstrates your commitment to lifelong learning. Passing the CompTIA Linux+ Certification Exam exam in one sitting is not a walk in the park. The CompTIA XK0-006 exam preparation process takes a lot of time and effort. You have to put time and money into passing the CompTIA Linux+ Certification Exam exam. The best method to reap the rewards of your investment in becoming an CompTIA Horizon & CompTIA is by using CompTIA XK0-006 Exam Questions. Additionally, you can confidently study for the XK0-006 exam.
NEW QUESTION # 203
A Linux administrator tries to install Ansible in a Linux environment. One of the steps is to change the owner and the group of the directory /opt/Ansible and its contents. Which of the following commands will accomplish this task?
Answer: B
Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
The chown command is used to change the owner and group of files and directories. The -R (recursive) flag ensures that all contents within the directory are also updated. The correct syntax is chown -R owner:group directory. So, chown -R Ansible:Ansible /opt/Ansible will change the owner and group for /opt/Ansible and everything inside it to "Ansible".
Other options:
* A. groupmod is used to modify group properties, not ownership of directories or files.
* C. usermod is for modifying user properties or group memberships.
* D. chmod changes permissions, not owner/group.
Reference:
CompTIA Linux+ Study Guide: Exam XK0-006, Sybex, Chapter 6: "User and Group Management", Section:
"Managing File Ownership and Permissions"
CompTIA Linux+ XK0-006 Objectives, Domain 1.0: System Management
NEW QUESTION # 204
Which of the following commands is used to display detailed information about block devices on a Linux system?
Answer: D
Explanation:
The correct answer is A. lsblk because it is specifically designed to display detailed information about block devices such as hard drives, SSDs, partitions, and their mount points in a structured, hierarchical format. The lsblk (list block devices) command provides a clear overview of how storage devices are organized, including relationships between disks and their partitions.
When executed, lsblk shows important details such as device names (e.g., sda, sdb), sizes, types (disk or partition), and mount points. This makes it extremely useful for system administrators when managing storage, troubleshooting disk issues, or verifying newly attached devices.
NEW QUESTION # 205
A systems administrator needs to open the DNS TCP port on a Linux system from network 10.0.0.0/24.
Which of the following commands should the administrator use for this task?
Answer: A
Explanation:
Firewall configuration is a key topic in the Security domain of CompTIA Linux+ V8. DNS primarily uses UDP port 53, but TCP port 53 is also required for zone transfers, large responses, and certain reliability scenarios. In this case, the administrator explicitly needs to allow DNS over TCP from a specific network.
The correct command is ufw allow 53/tcp from 10.0.0.0/24. This rule allows incoming TCP traffic on port 53 only from the specified subnet, following the principle of least privilege. Linux+ V8 documentation emphasizes restricting firewall rules by source network whenever possible to minimize attack surfaces.
Option A is incorrect because UFW service aliases like dns are not always guaranteed to map explicitly to TCP, and the syntax is incomplete. Option B is invalid because ufw enable is used to enable the firewall globally and does not define rules. Option D disables firewall protections and introduces a major security risk.
Linux+ V8 best practices stress precise, minimal firewall rules instead of broad or disabling actions.
Therefore, C is the correct and secure choice.
NEW QUESTION # 206
Which of the following best describes journald?
Answer: B
Explanation:
journald, part of systemd, is the core logging service in modern Linux systems and is covered under Linux+ V8 logging and monitoring objectives.
The correct description is A. systemd-journald collects, stores, and indexes logging data from the kernel, system services, and applications. Logs are stored in a structured, binary format and can be queried using journalctl. Journald supports metadata tagging, log filtering, and centralized logging integration.
Option B refers to kernel crash dump mechanisms like kdump. Option C describes filesystem journaling (such as ext4 journaling). Option D refers to auditd, which manages security audit logs.
Linux+ V8 documentation clearly distinguishes journald from other logging and auditing services. Therefore, the correct answer is A.
NEW QUESTION # 207
A systems administrator is working on an SFTP server configuration. Which of the following commands will best enable the connectivity to that service from the 10.10.0.0/24 network?
Answer: D
Explanation:
The command sudo ufw allow from 10.10.0.0/24to any port 22 explicitly opens TCP port 22 (used by SFTP/SSH) only for hosts in the 10.10.0.0/24 network.
NEW QUESTION # 208
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