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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Security | 18% | - Access control and authentication
|
| Topic 2: Troubleshooting | 22% | - System and hardware issues
|
| Topic 3: Services and User Management | 20% | - Service configuration and operation
|
| Topic 4: System Management | 23% | - Installation, configuration, and maintenance
|
| Topic 5: Automation and Scripting | 17% | - Shell scripting and automation
|
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NEW QUESTION # 32
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: D
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 # 33
A systems administrator reviews the package management history and sees the following entries:
46 install httpd Install 9
47 update -y Upgrade 44
Which of the following commands should the administrator use to undo the installation of the
httpd package from transaction 46?
Answer: B
Explanation:
The correct answer is B. yum history undo 46 because it directly reverses the specific transaction identified in the YUM history log. In Red Hat-based Linux distributions, the yum history feature allows administrators to view, manage, and undo past package operations. Each transaction is assigned a unique ID, which can be used to reverse changes accurately.
In this scenario, transaction 46 corresponds to the installation of the httpd package. Using the command yum history undo 46 will attempt to revert that exact transaction by removing the installed package and restoring the system to its previous state before that transaction occurred.
This method is precise and preferred in environments where maintaining package consistency is critical.
NEW QUESTION # 34
A Linux administrator needs to change the server name to comptia1. Which of the following commands should the administrator use?
Answer: D
Explanation:
The standard tool for managing the system hostname on modern Linux distributions using systemd is hostnamectl. According to the CompTIA Linux+ V8 objectives, the command hostnamectl set-hostname <name> is the correct and permanent way to change the server's identity.
When an administrator runs hostnamectl set-hostname comptia1, the utility updates the various types of hostnames recognized by the system:
Static Hostname: This is stored in /etc/hostname and persists across reboots.
Transient Hostname: A temporary name received via network configuration (like DHCP).
Pretty Hostname: A high-level, human-readable name that can include special characters.
Using hostnamectl is preferred over manually editing /etc/hostname because it immediately notifies the kernel and running services of the change, often without requiring a reboot to take effect system- wide.
NEW QUESTION # 35
A user states that an NFS share Is reporting random disconnections. The systems administrator obtains the following information
Which of the following best explains the symptoms that are being reported?
Answer: C
Explanation:
This issue is best analyzed using a layered troubleshooting approach, as recommended in the Troubleshooting domain of CompTIA Linux+ V8. The reported symptom is intermittent or random disconnections from an NFS share, which commonly indicates a network reliability issue rather than a configuration or filesystem problem.
The most critical evidence comes from the output of ip -s link show. The network interface enp1s0 is reporting significant numbers of errors and dropped packets on both the receive (RX) and transmit (TX) paths. High packet loss at the network interface level directly affects protocols like NFS, which rely on stable, continuous TCP/IP communication. When packets are dropped or corrupted, NFS clients may experience timeouts, retransmissions, and apparent disconnections.
Although the df -h output shows that the NFS filesystem is 95% full, this alone does not typically cause random disconnections. A nearly full filesystem may lead to write failures or performance degradation, but it does not explain intermittent connectivity loss. Linux+ V8 documentation notes that filesystem capacity issues usually present as I/O errors, not transport-layer disconnects.
Options A and B can also be ruled out. If the mount point or IP address were incorrect, the NFS share would fail consistently rather than intermittently. The fact that the share is mounted and accessible confirms that the mount configuration and IP addressing are correct.
Linux+ V8 emphasizes that NFS performance and reliability are highly sensitive to network quality. Packet errors, drops, faulty NICs, cabling issues, duplex mismatches, or driver problems commonly result in unstable NFS behavior.
Therefore, the best explanation for the reported random disconnections is D. The interface is reporting a high number of errors and dropped packets.
NEW QUESTION # 36
Which of the following best describes a benefit of using a Python virtual environment?
Answer: D
Explanation:
A Python virtual environment isolates project dependencies, allowing different projects to use different versions of the same package without interfering with each other.
NEW QUESTION # 37
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