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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Security | 21% | - Configure SELinux and security contexts - Apply best practices for permissions and authentication - Manage firewalls - Perform vulnerability assessments - Implement security hardening - Manage file security and access controls |
| Topic 2: Troubleshooting | 28% | - Monitor system logs, health, and events - Troubleshoot security issues (SELinux, permissions) - Troubleshoot application issues - Troubleshoot hardware issues - Optimize performance (CPU, memory, I/O) - Troubleshoot network connectivity (firewall, routing, DNS) - Troubleshoot user issues - Troubleshoot system properties and processes |
| Topic 3: System Management | 32% | - Manage files and directories - Manage system components - Perform basic Linux tasks - Configure storage and cloud/virtualization technologies - Manage users and groups - Manage permissions and ownership - Manage kernel modules - Configure kernel modules and network parameters - Manage networking - Manage storage - Manage devices - Manage packages and software - Manage the Linux boot process |
| Topic 4: Scripting, Containers, and Automation | 19% | - Manage version control using Git - Deploy and manage containers (Docker/Podman) - Manage orchestration processes - Automate administration with Python and configuration management tools - Implement automation workflows - Write and execute BASH shell scripts |
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NEW QUESTION # 46
A systems administrator wants to review the logs from an Apache 2 error.logfile in real time and save the information to another file for later review. Which of the following commands should the administrator use?
Answer: A
Explanation:
Using tee allows output to be viewed in real time on the terminal while simultaneously writing it to logfile.txt. This meets both requirements: monitoring live updates and saving them for later review.
NEW QUESTION # 47
A systems administrator is having issues installing packages in a Linux system. The administrator receives the following outputs:
Which of the following is the best command to fix this issue?
Answer: B
Explanation:
The CA bundle path is a symlink to a file under /etc/pki/ca-trust/extracted/pem, and update-ca- trust cannot create that generated bundle while SELinux is enforcing. Restoring the default SELinux contexts on that directory allows the bundle file to be created and fixes the certificate verification failures during package installs.
NEW QUESTION # 48
An administrator must secure an account for a user who is going on extended leave. Which of the following steps should the administrator take? (Choose two)
Answer: B,D
Explanation:
Securing dormant or temporarily unused user accounts is a best practice emphasized in the Security domain of CompTIA Linux+ V8. When a user goes on extended leave, the goal is to prevent unauthorized access while preserving the user's data and account for future use.
The most effective approach is to disable authentication and interactive login access without deleting the account. Option D, running passwd -l user, locks the user's password by prepending an invalid character to the encrypted password in /etc/shadow. This prevents password-based authentication while retaining the account, files, and ownership information. Linux+ V8 documentation highlights password locking as a standard method for temporarily disabling accounts.
Option F, changing the user's shell to /sbin/nologin, further strengthens account security by preventing interactive shell access entirely. Even if another authentication mechanism were attempted, the user would be denied a login shell. This is a common defense-in-depth measure and is explicitly referenced in Linux+ V8 objectives for access control and account hardening.
The other options are incorrect or inappropriate. Option A (immutable files) does not prevent account access and may interfere with system operations. Option B defeats the purpose of securing an inactive account.
Option C deletes user data, which is unnecessary and risky. Option E has no security effect, as filesystem timestamps do not control access.
Linux+ V8 stresses that secure account management should be reversible, auditable, and minimally disruptive. Locking the password and disabling the login shell meet these criteria and are commonly used together in enterprise environments.
NEW QUESTION # 49
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 # 50
A systems administrator is decommissioning a service. Which of the following commands should the administrator use to make sure users cannot start the service again?
Answer: A
Explanation:
This command prevents the service from being started manually or automatically by linking it to a null target, ensuring it cannot be restarted even if another service or user attempts to start it.
NEW QUESTION # 51
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