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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Troubleshooting | 28% | - Troubleshoot user issues - Troubleshoot security issues (SELinux, permissions) - Troubleshoot network connectivity (firewall, routing, DNS) - Troubleshoot system properties and processes - Monitor system logs, health, and events - Troubleshoot hardware issues - Troubleshoot application issues - Optimize performance (CPU, memory, I/O) |
| Topic 2: Scripting, Containers, and Automation | 19% | - Manage version control using Git - Deploy and manage containers (Docker/Podman) - Write and execute BASH shell scripts - Manage orchestration processes - Automate administration with Python and configuration management tools - Implement automation workflows |
| Topic 3: System Management | 32% | - Manage packages and software - Manage storage - Perform basic Linux tasks - Manage files and directories - Manage networking - Manage users and groups - Configure storage and cloud/virtualization technologies - Manage the Linux boot process - Configure kernel modules and network parameters - Manage kernel modules - Manage system components - Manage permissions and ownership - Manage devices |
| Topic 4: Security | 21% | - Perform vulnerability assessments - Manage firewalls - Apply best practices for permissions and authentication - Configure SELinux and security contexts - Implement security hardening - Manage file security and access controls |
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NEW QUESTION # 157
Which of the following statements best describes Ansible?
Answer: A
Explanation:
Ansible is an automation and configuration management tool that uses human-readable YAML playbooks to define tasks, enabling consistent and agentless automation across systems.
NEW QUESTION # 158
After receiving a monitoring call, an administrator checks the Linux server for processes that have completed execution but have not been removed yet from the process table.
Which of the following represents the process state for which the administrator should search?
Answer: D
Explanation:
This process state represents zombie processes, which have finished execution but still remain in the process table because their parent process has not yet read their exit status.
NEW QUESTION # 159
A systems administrator manages multiple Linux servers and needs to set up a reliable and secure way to handle the complexity of managing event records on the OS and application levels.
Which of the following should the administrator do?
Answer: B
Explanation:
A centralized log aggregation solution (such as Elasticsearch, Graylog, or Splunk) provides reliable and secure management of logs across multiple servers. It consolidates OS and application logs, simplifies analysis, and improves monitoring and security compared to on- demand retrieval, backups, or simple log rotation.
NEW QUESTION # 160
While hardening a system, an administrator runs a port scan with Nmap, which returned the following output:
Which of the following is the best way to address this security issue?
Answer: B
Explanation:
This scenario falls under the Security domain of the CompTIA Linux+ V8 objectives and focuses on system hardening and service minimization. The Nmap scan output reveals that port 23 (Telnet) is open on the system, which represents a significant security risk.
Telnet is an insecure, legacy protocol that transmits authentication credentials and session data in plaintext, making it vulnerable to interception through packet sniffing or man-in-the-middle attacks. Linux+ V8 documentation explicitly emphasizes the principle of least functionality, which states that unnecessary or insecure services should be disabled and removed entirely rather than merely restricted.
Option D, disabling and removing the Telnet service on the server, is the best and most secure solution. This action eliminates the vulnerable service completely, ensuring that it cannot be exploited internally or externally. In secure Linux environments, Telnet should be replaced with SSH, which provides encrypted communication and strong authentication mechanisms.
Option A, blocking port 23 with a firewall, reduces exposure but does not eliminate the underlying risk. If the firewall rules are misconfigured or bypassed, the Telnet service would still be available. Linux+ V8 best practices recommend removing insecure services rather than relying solely on perimeter controls.
Option B is unrelated, as changing passwords does not address the risk of plaintext credential transmission.
Option C is incorrect because closing ports at the network switch level is not an appropriate or scalable solution for host-level service hardening and does not address internal access risks.
Linux+ V8 documentation consistently highlights service auditing, port scanning, and removal of insecure protocols as essential system hardening steps. Therefore, the most effective and secure remediation is to disable and remove the Telnet service.
NEW QUESTION # 161
Which of the following Ansible components is used to define groups and individual hosts and can include variables specific to each host or group?
Answer: A
NEW QUESTION # 162
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