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| Certification Vendor: | CompTIA |
|---|---|
| Exam Name: | CompTIA Linux+ Certification Exam |
| Exam Number: | XK0-006 |
| Available Languages: | English |
| Certificate Validity Period: | 3 years |
| Passing Score: | 720 (on a scale of 100–900) |
| Exam Price: | USD 348 |
| Real Exam Qty: | Maximum of 90 |
| Exam Duration: | 90 minutes |
| Related Certifications: | CompTIA Linux+ |
| Exam Format: | Performance-based, Multiple-choice |
| Sample Questions: | CompTIA XK0-006 Sample Questions |
| Exam Way: | Online (via Pearson VUE) or In-person at Pearson VUE testing centers |
| Pre Condition: | No formal prerequisites; recommended 12 months of hands-on experience with Linux administration |
| Official Syllabus URL: | https://www.comptia.org/en-us/certifications/linux |
CompTIA XK0-006 Certification has great effect in this field and may affect your career even future. CompTIA Linux+ Certification Exam real questions files are professional and high passing rate so that users can pass the exam at the first attempt. High quality and pass rate make us famous and growing faster and faster.
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NEW QUESTION # 19
User1 reports "access denied" errors while trying to execute app. Given the following outputs:
Which of the following options will remediate this issue?
Answer: C
Explanation:
According to the output of getfacl app, user1 has only "rw" (read and write) permissions, but lacks
"x" (execute). Without execute permission, user1 cannot run the file. To allow user1 to execute app, you must update the ACL to add execute permission (e.g., setfacl -m u:user1:rwx app).
Modifying "others" permissions (option B) is not secure or necessary, adding user1 to the wheel group (option C) is unrelated, and moving the file (option D) does not resolve permission issues.
NEW QUESTION # 20
A systems administrator is creating a new shared directory. Which of the following commands ensures all users from the same group will be able to work with the newly created files?
Answer: B
Explanation:
Setting the setgid bit on a shared directory causes newly created files and subdirectories to inherit the directory's group ownership, allowing members of the same group to collaborate consistently on new files.
NEW QUESTION # 21
Which of the following commands is used to verify whether a port is open on a remote host?
Answer: D
Explanation:
The correct answer is C. nc because netcat (nc) is specifically designed to test network connectivity, including verifying whether a particular port is open on a remote host. It is a versatile networking tool commonly used in troubleshooting and diagnostics.
Using a command such as nc -zv < hostname > < port > , an administrator can attempt to establish a connection to a remote port. The -z option tells netcat to scan for listening daemons without sending data, and the -v option enables verbose output, indicating whether the connection was successful or refused. This makes nc one of the most efficient tools for quickly validating port accessibility.
Option A (ip) is incorrect because the ip command is used for network interface configuration and routing, not for testing remote port connectivity.
Option B (ping) is incorrect because it tests basic network reachability using ICMP packets, but it does not verify whether specific TCP/UDP ports are open.
Option D (netstat) is incorrect because it displays network connections and listening ports on the local machine, not remote hosts.
From a Linux+ troubleshooting standpoint, identifying whether a service is reachable on a specific port is essential for diagnosing connectivity issues. Tools like nc, telnet, and nmap are commonly used for this purpose, but nc is preferred due to its simplicity and flexibility. It helps determine whether issues stem from firewall rules, service availability, or network path problems, making it a critical command in a system administrator's toolkit.
NEW QUESTION # 22
A systems administrator is preparing a Linux system for application setup. The administrator needs to create an environment variable with a persistent value in one of the user accounts.
Which of the following commands should the administrator use for this task?
Answer: D
Explanation:
Adding export VAR=value to ~/.bashrc ensures the environment variable is set persistently for the user. The variable will load automatically in every new shell session.
NEW QUESTION # 23
Which of the following commands should an administrator use to see a full hardware inventory of a Linux system?
Answer: A
Explanation:
Hardware inventory and system information gathering are core responsibilities in Linux system management and are explicitly covered in CompTIA Linux+ V8 objectives. Among the listed commands, dmidecode is the most comprehensive tool for retrieving detailed hardware inventory information.
The dmidecode command reads data directly from the system's DMI (Desktop Management Interface) / SMBIOS tables, which are provided by the system firmware (BIOS or UEFI). It reports detailed information about system hardware components, including motherboard details, BIOS version, system manufacturer, CPU sockets, memory slots, installed RAM modules, serial numbers, and asset tags. This makes it the preferred tool when a full hardware inventory is required.
The other options provide only partial or specific information. lsmod lists currently loaded kernel modules and does not provide physical hardware inventory. dmesg displays kernel ring buffer messages, which may include hardware detection logs but are not structured or complete inventory data. lscpu reports CPU architecture and processor details only, not the entire system hardware.
Linux+ V8 documentation highlights dmidecode as the authoritative utility for system hardware discovery and inventory auditing. It is commonly used in enterprise environments for documentation, troubleshooting, capacity planning, and compliance reporting.
Because it provides the most complete and authoritative hardware information available from the system firmware, the correct answer is A. dmidecode.
NEW QUESTION # 24
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