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| Section | Weight | Objectives |
|---|---|---|
| Services and User Management | 20% | - User and group administration
|
| System Management | 23% | - Installation, configuration, and maintenance
|
| Troubleshooting | 22% | - Network and service problems
|
| Automation and Scripting | 17% | - Shell scripting and automation
|
| Security | 18% | - Access control and authentication
|
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NEW QUESTION # 59
An administrator added a new disk to expand the current storage. Which of the following commands should the administrator run first to add the new disk to the LVM?
Answer: A
Explanation:
To add a new physical disk to LVM, the disk must first be initialized as a physical volume using the pvcreate command. This prepares the new disk for use by the LVM subsystem. After initializing with pvcreate, you would use vgextend to add the new physical volume to an existing volume group.
NEW QUESTION # 60
Users cannot access an application that is running inside containers. The administrator wants to validate whether the containers are running. Which of the following commands should the administrator use?
Answer: D
Explanation:
Container troubleshooting is a key competency within the Automation, Orchestration, and Scripting domain of CompTIA Linux+ V8. When users report that an application running inside containers is not accessible, one of the first validation steps is to confirm whether the containers are currently running.
The docker ps command is specifically designed to list running containers on the system. By default, it displays container IDs, image names, command executed, uptime, port mappings, and container names. This allows administrators to quickly determine whether the application container is active and whether it is exposing the expected ports. This aligns directly with Linux+ V8 guidance on container lifecycle management and operational validation.
The other options are not suitable for this purpose. docker start is used to start one or more stopped containers but does not display container status. docker run creates and starts a new container, which is not appropriate when the goal is only to check the status of existing containers. docker images lists locally available container images but provides no information about running or stopped containers.
Linux+ V8 documentation emphasizes the importance of using the correct Docker subcommands when diagnosing containerized applications. Verifying container runtime state using docker ps is a foundational troubleshooting step before investigating networking, firewall rules, or application-level errors.
Therefore, the correct command to validate whether containers are running is docker ps, making Answer B correct.
NEW QUESTION # 61
A DevOps engineer needs to create a local Git repository. Which of the following commands should the engineer use?
Answer: C
Explanation:
The correct answer is A. git init because it is the command used to initialize a new local Git repository in a directory. When executed, git init creates a hidden .git directory that contains all the necessary metadata and configuration files required for version control. This action effectively turns the current directory into a Git repository, allowing the user to begin tracking changes.
In a DevOps and automation context, initializing repositories is a foundational task. It enables version control for scripts, configuration files, and infrastructure-as-code, which are critical components in modern Linux environments. Once the repository is initialized, the engineer can proceed with adding files (git add) and committing changes (git commit).
Option B (git clone) is incorrect because it is used to copy an existing remote repository to a local system. It does not create a new repository from scratch but instead duplicates an already initialized one.
Option C (git config) is incorrect because it is used to configure Git settings such as username, email, and preferences. It does not initialize a repository.
Option D (git add) is incorrect because it stages changes for commit within an already initialized repository. It cannot be used before a repository is created.
From a Linux+ perspective, understanding Git operations is essential under automation and orchestration topics. Tools like Git support collaboration, change tracking, and deployment workflows. The git init command represents the starting point for managing code and configuration in a controlled and versioned manner, making it a critical skill for system administrators and DevOps engineers.
NEW QUESTION # 62
Which of the following best describes a use case for playbooks in a Linux system?
Answer: B
Explanation:
In Ansible, a playbook is a YAML file that defines tasks, configurations, and automation workflows. It is commonly used to deploy applications, configure systems, and manage infrastructure on Linux systems.
NEW QUESTION # 63
A systems administrator needs to integrate a new storage array into the company's existing storage pool. The administrator wants to ensure that the server is able to detect the new storage array. Which of the following commands should the administrator use to ensure that the new storage array is presented to the systems?
Answer: A
Explanation:
The lsscsi command is used to list information about SCSI devices (including storage arrays) that are attached to the system. This is critical when integrating a new storage array because it allows the administrator to verify that the operating system detects the new device at the SCSI layer, which is the underlying interface for most enterprise storage solutions. lsscsi outputs a list of recognized SCSI devices, their device nodes, and associated information.
NEW QUESTION # 64
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