2025 TRUSTWORTHY XK0-005 EXAM TORRENT - REALISTIC EXAM COMPTIA LINUX+ CERTIFICATION EXAM MATERIAL FREE PDF QUIZ

2025 Trustworthy XK0-005 Exam Torrent - Realistic Exam CompTIA Linux+ Certification Exam Material Free PDF Quiz

2025 Trustworthy XK0-005 Exam Torrent - Realistic Exam CompTIA Linux+ Certification Exam Material Free PDF Quiz

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The Linux operating system is becoming increasingly popular in the IT industry, and with this growth comes a demand for professionals skilled in Linux administration. The CompTIA Linux+ certification provides IT professionals with the necessary knowledge and skills to work with Linux systems. It is an industry-recognized certification that demonstrates the candidate's competence in Linux administration, making them a valuable asset to any organization.

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The XK0-005 Exam covers a range of topics, including system architecture, Linux installation and package management, file systems and storage management, network configuration, security, and troubleshooting. XK0-005 exam is designed to assess a candidate's practical knowledge and skills in Linux administration and is recognized by employers as a valuable certification for IT professionals. Earning the CompTIA Linux+ certification validates a candidate's skills and knowledge in Linux administration and can lead to better job opportunities and higher salaries in the IT industry.

CompTIA Linux+ Certification Exam Sample Questions (Q27-Q32):

NEW QUESTION # 27
A Linux administrator is troubleshooting an issue in which users are not able to access https://portal.comptia.
org from a specific workstation. The
administrator runs a few commands and receives the following output:

Which of the following tasks should the administrator perform to resolve this issue?

  • A. Remove the entry for portal . comptia.org from the local hosts file.
  • B. Update the name server in resolv. conf to use an external DNS server.
  • C. Add a network route from the 10.10.10.0/24 to the 192.168.0.0/16.
  • D. Clear the local DNS cache on the workstation and rerun the host command.

Answer: A

Explanation:
The best task to perform to resolve this issue is B. Remove the entry for portal.comptia.org from the local hosts file. This is because the local hosts file has a wrong entry that maps portal.comptia.org to 10.10.10.55, which is different from the actual IP address of 192.168.1.55 that is returned by the DNS server. This causes a mismatch and prevents the workstation from accessing the website. By removing or correcting the entry in the hosts file, the workstation will use the DNS server to resolve the domain name and access the website successfully.
To remove or edit the entry in the hosts file, you need to have root privileges and use a text editor such as vi or nano. For example, you can run the command:
sudo vi /etc/hosts
and delete or modify the line that says:
10.10.10.55 portal.comptia.org
Then save and exit the file.


NEW QUESTION # 28
A junior developer is unable to access an application server and receives the following output:

The systems administrator investigates the issue and receives the following output:

Which of the following commands will help unlock the account?

  • A. Pam_tally2 --user=dev2 --quiet
  • B. pam_ tally2 --user=dev2
  • C. pam_tally2 --user+dev2 --quiet
  • D. pam_tally2 --user=dev2 --reset

Answer: D

Explanation:
To unlock an account that has been locked due to login failures, the administrator can use the command pam_tally2 --user=dev2 --reset (D). This will reset the failure counter for the user "dev2" and allow the user to log in again. The other commands will not unlock the account, but either display or increase the failure count. References:
* [CompTIA Linux+ Study Guide], Chapter 4: Managing Users and Groups, Section: Locking Accounts with pam_tally2
* [How to Lock and Unlock User Account in Linux]


NEW QUESTION # 29
A systems administrator wants to permit access temporarily to an application running on port
1234/TCP on a Linux server. Which of the following commands will permit this traffic?

  • A. firewall-cmd --new-service=l234/tcp
  • B. firewall-cmd --add-port=1234/tcp
  • C. firewall-cmd --add-whitelist-uid=l234
  • D. firewall-cmd --service=l234 --protocol=tcp

Answer: B

Explanation:
The firewall-cmd command is used to manage firewalld, which is a firewall service for Linux systems that provides dynamic and persistent configuration of firewall rules. Firewalld uses zones and services to define different levels of trust and access for network connections. To permit access temporarily to an application running on port 1234/TCP on a Linux server, the systems administrator can use the firewall-cmd --add-port=1234/tcp command. This command will add a rule to the default zone (usually public) that allows incoming traffic on port 1234/TCP. The rule will only be effective until the next reload or restart of firewalld. To make the rule permanent, the administrator can add the --permanent option to the command.


NEW QUESTION # 30
An administrator thinks that the user Joe may be running an unauthorized process on a Linux server. Which of the following commands should the administrator run to confirm this idea?

  • A. ps -ax 'Joe'
  • B. jobs -n 'Joe'
  • C. lsof -p 'Joe'
  • D. top -u 'Joe'

Answer: D

Explanation:
The correct command is:
bash
top -u Joe
This command shows all running processes for the user Joe in real-time.
* Option A (lsof -p 'Joe') is incorrect because lsof uses process IDs (-p), not usernames.
* Option C (jobs) lists background jobs for the current shell, not across users.
* Option D is invalid syntax; ps -ax does not accept a username directly.
Reference:CompTIA Linux+ XK0-005 Official Study Guide, Domain 5.0 - Troubleshooting
"To view active processes per user, use top -u username."


NEW QUESTION # 31
A systems administrator is receiving tickets from users who cannot reach the application app that should be listening on port 9443/tcp on a Linux server.
To troubleshoot the issue, the systems administrator runs netstat and receives the following output:

Based on the information above, which of the following is causing the issue?

  • A. The application is listening on port 1234.
  • B. The IP address 0.0.0.0 is not valid.
  • C. The application is not running.
  • D. The application is listening on the loopback interface.

Answer: D

Explanation:
The server is in a "Listen" state on port 9943 using its loopback address. The "1234" is a process-id The cause of the issue is that the application is listening on the loopback interface. The loopback interface is a virtual network interface that is used for internal communication within the system. The loopback interface has the IP address 127.0.0.1, which is also known as localhost. The netstat output shows that the application is listening on port 9443 using the IP address 127.0.0.1. This means that the application can only accept connections from the same system, not from other systems on the network. This can prevent the users from reaching the application and cause the issue. The administrator should configure the application to listen on the IP address 0.0.0.0, which means all available interfaces, or on the specific IP address of the system that is reachable from the network. This will allow the application to accept connections from other systems and resolve the issue. The cause of the issue is that the application is listening on the loopback interface. This is the correct answer to the question. The other options are incorrect because they are not supported by the outputs. The IP address 0.0.0.0 is valid and means all interfaces, the application is not listening on port 1234, and the application is running as shown by the process ID 1234. References: CompTIA Linux+ (XK0-005) Certification Study Guide, Chapter 12: Managing Network Connections, page 383.


NEW QUESTION # 32
......

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