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NEW QUESTION # 123
Which of the following cryptographic functions ensures a hard drive is encrypted when not in use?
Answer: D
Explanation:
Disk encryption is a key Linux+ V8 security objective, especially for protecting data at rest. LUKS (Linux Unified Key Setup) is the standard Linux framework for full-disk and partition-level encryption.
Option B is correct. LUKS provides strong encryption for storage devices, ensuring that data remains unreadable when the system is powered off or the disk is removed. It integrates with tools like cryptsetup and supports key management, passphrases, and multiple unlock methods.
The other options are incorrect. GPG encrypts files, not entire disks. PKI certificates are used for identity and trust, not disk encryption. OpenSSL is a cryptographic library, not a disk encryption mechanism.
Linux+ V8 documentation explicitly identifies LUKS as the primary solution for disk encryption on Linux systems. Therefore, the correct answer is B.
NEW QUESTION # 124
Which of the following commands is used to ensure a service starts automatically at boot on a system using systemd?
Answer: B
Explanation:
The correct answer is B. systemctl enable httpd because it configures a service to start automatically during system boot in systems that use systemd as the init system. The enable command creates the necessary symbolic links between the service unit file and the appropriate target (such as multi- user.target), ensuring the service is launched when the system starts.
NEW QUESTION # 125
Which of the following Ansible components contains a list of hosts and host groups?
Answer: B
Explanation:
Ansible architecture and core components are part of the Automation, Orchestration, and Scripting domain in CompTIA Linux+ V8. Among these components, the inventory plays a foundational role in defining the infrastructure Ansible manages.
An Ansible inventory is a file (or set of files) that contains a list of managed hosts and optionally organizes them into logical groups. These hosts can be defined by IP address, fully qualified domain name (FQDN), or hostname. Inventories may be written in INI, YAML, or dynamically generated formats. Grouping hosts allows administrators to apply configurations, roles, and tasks to multiple systems simultaneously.
Option B, Inventory, is correct because it explicitly defines which systems Ansible will target. Without an inventory, Ansible does not know where to execute tasks. Linux+ V8 documentation emphasizes inventories as the starting point for all Ansible operations.
The other options are incorrect. Facts are system variables automatically collected by Ansible about managed hosts, such as OS version or IP address. Playbooks define what actions to perform but rely on the inventory to know where to perform them. Collections are distribution units that package roles, modules, and plugins, not host definitions.
Therefore, the correct answer is B. Inventory.
NEW QUESTION # 126
A systems administrator is creating a now shared directory. Which of the following commands ensures all users from the same group will be able to work with the newly created files?
Answer: D
Explanation:
Setting the setgid bit on a shared directory causes newly created files and subdirectories to inherit the directory's group ownership, allowing members of the same group to collaborate consistently on new files.
NEW QUESTION # 127
Users cannot access a server after it has been restarted. At the server console, the administrator runs the following commands;
Which of the following is the cause of the issue?
Answer: A
Explanation:
This issue is a classic example of post-reboot connectivity troubleshooting, which falls under the Troubleshooting domain of CompTIA Linux+ V8. The administrator has correctly gathered evidence using multiple diagnostic tools, allowing the root cause to be identified through correlation.
The ss -lnt output confirms that the SSH daemon is running and listening on TCP port 22. This eliminates the possibility that the SSH service failed to start after reboot. Additionally, the uptime output shows a very low load average, indicating that system performance is not a limiting factor. The successful ping test confirms that the server is reachable at the network layer and that DNS resolution and basic connectivity are functioning correctly.
The critical clue comes from the firewall configuration. The output of firewall-cmd --list-all shows that only specific services are allowed through the firewall, such as https, dns, and cockpit. The SSH service is notably absent. On systems using firewalld, services must be explicitly allowed, even if the daemon itself is running and listening on the correct port.
As a result, incoming SSH connection attempts are being blocked by the firewall, preventing users from accessing the server remotely after reboot. This aligns precisely with option B.
The other options are incorrect. DNS is functioning, as shown by successful ping responses. System load is low and not contributing to the issue. There is no indication that users are attempting to access the web server using an incorrect protocol.
Linux+ V8 documentation emphasizes that administrators must verify both service status and firewall rules when diagnosing access issues. In this case, allowing SSH with a command such as firewall-cmd --add- service=ssh --permanent followed by a reload would resolve the problem.
NEW QUESTION # 128
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