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質問 # 101
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?
正解：D
解説：
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.
質問 # 102
Which of the following describes what Ansible is used for in the context of IT infrastructure?
正解：A
解説：
The correct answer is B. Configuration management because Ansible is primarily designed as an automation and configuration management tool used to manage IT infrastructure efficiently. Within Linux environments, Ansible allows system administrators to define the desired state of systems using human-readable YAML- based playbooks. These playbooks automate tasks such as software installation, system updates, service configuration, and deployment processes across multiple machines.
Ansible operates in an agentless architecture, meaning it does not require additional software to be installed on managed nodes. Instead, it uses standard protocols such as SSH to communicate with remote systems. This makes it lightweight and easy to deploy compared to other configuration management tools. In the Linux+ context, understanding automation tools like Ansible is essential for maintaining consistency across systems, reducing manual configuration errors, and improving operational efficiency.
Option A (Database management) is incorrect because Ansible is not specifically designed to manage or administer databases, although it can automate database-related tasks. Option C (Process management) is incorrect because process management refers to controlling running processes (e.g., using commands like ps, kill, or top), which is not Ansible's primary function. Option D (Asset management) is also incorrect because asset management involves tracking hardware and software inventory, which is outside the scope of Ansible's core capabilities.
In modern Linux system administration, tools like Ansible are widely used for orchestration and configuration management, enabling administrators to automate repetitive tasks, enforce system consistency, and scale infrastructure management effectively.
質問 # 103
Which of the following commands can be used to display current CPU utilization in real time on a Linux system?
正解：A
解説：
The correct answer is B. top because it provides a real-time, continuously updating view of system performance, including CPU utilization. The top command is one of the most widely used monitoring tools in Linux and is essential for system administrators when analyzing performance issues.
When executed, top displays a dynamic interface showing CPU usage percentages, memory consumption, load averages, running processes, and other critical system metrics. The CPU usage section is particularly useful because it breaks down usage into categories such as user space, system (kernel), idle time, and I/O wait. This allows administrators to quickly identify whether the CPU is under heavy load and which processes are consuming the most resources.
Option A (uptime) is incorrect because it provides load averages but does not give detailed or real-time CPU utilization percentages.
Option C (df) is incorrect because it reports disk space usage, not CPU activity.
Option D (lsblk) is incorrect because it lists block devices and storage structure, not CPU performance.
From a Linux+ system management perspective, tools like top, htop, and vmstat are critical for monitoring system health. Among these, top is the most fundamental and widely available tool for real-time CPU analysis. It enables administrators to detect performance bottlenecks, identify runaway processes, and take corrective action such as terminating processes or reallocating resources.
質問 # 104
Joe, a user, has taken a position previously held by Ann. As a systems administrator, you need to archive all the files from Ann ' s home directory and extract them into Joe ' s home directory.
INSTRUCTIONS
Within each tab, click on an object to form the appropriate commands. Command objects may only be used once, but the spacebar _ object may be used multiple times. Not all objects will be used.
If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.
正解：
解説：
See the solution in Explanation below.
Explanation:
Archive Tab - Create the archive from Ann's home directory
Correct Command:
tar -cvf /tmp/ann.tar -C /home/ ann
Extract Tab - Extract the archive into Joe's home directory
Correct Command:
tar -xvf /tmp/ann.tar -C /home/ joe
This performance-based question tests file archiving and restoration using tar, a core System Management skill in the CompTIA Linux+ V8 objectives. The task requires preserving Ann's files and placing them correctly into Joe's home directory.
# Archive Phase Explanation
The goal of the first step is to archive Ann's entire home directory without embedding the full path (/home
/ann) inside the archive. This is accomplished using the -C option.
Command breakdown:
tar # archive utility
-c # create an archive
-v # verbose output (optional but allowed)
-f /tmp/ann.tar # specifies the archive file
-C /home/ # changes directory before archiving
ann # archives the ann directory only
This results in a clean archive containing Ann's files without absolute paths, which is best practice and explicitly covered in Linux+ V8 documentation.
# Extract Phase Explanation
The second step extracts the archived files into Joe's home directory.
Command breakdown:
-x # extract
-v # verbose
-f /tmp/ann.tar # specifies the archive
-C /home/joe # extracts files directly into Joe's home directory
This ensures Joe receives Ann's files correctly under /home/joe/ann or directly under /home/joe depending on post-extraction handling, which matches Linux+ expectations for administrative user transitions.
質問 # 105
An administrator set up a new user account called "test". However, the user is unable to change their password. Given the following output:
Which of the following is the most likely cause of this issue?
正解：D
解説：
For normal users to change their own password, /bin/passwd must have the SUID bit set (permissions should be -rwsr-xr-x). The SUID bit allows users to run the program with the permissions of the file owner (root), which is required to update /etc/shadow. The provided output shows /bin/passwd does not have the SUID bit (no 's' in the owner's execute field). As a result, user "test" receives an "Authentication token manipulation error". The password can be changed as root, which confirms it's a permissions/SUID issue.
Other options:
* B. If the password didn't meet requirements, a different error would appear.
* C. There is no minimum day limit preventing password change (see chage -l output).
* D. The account and password are active (not disabled).
Reference:
CompTIA Linux+ Study Guide: Exam XK0-006, Sybex, Chapter 6: "User and Group Management", Section:
"Managing User Passwords and Policies"
CompTIA Linux+ XK0-006 Objectives, Domain 1.0: System Management
質問 # 106
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2026年Xhs1991の最新XK0-006 PDFダンプおよびXK0-006試験エンジンの無料共有：https://drive.google.com/open?id=1qI0RgzPbM9G44CJSGfZE2SiHwvQkLKhL