XK0-006 Prüfungs-Guide & XK0-006 Fragenpool

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CompTIA XK0-006 Exam Overview:

Certification Vendor: CompTIA
Exam Name: CompTIA Linux+ Certification Exam
Exam Number: XK0-006
Related Certifications: CompTIA Server+
CompTIA Network+
CompTIA A+
Exam Duration: 90 minutes
Passing Score: 720 (scale 100–900)
Exam Price: $358 USD
Available Languages: English
Exam Format: Performance-based questions, Multiple-choice
Certificate Validity Period: 3 years
Real Exam Qty: Up to 90
Recommended Training: CompTIA CertMaster Learn
CompTIA Official Study Materials
Exam Registration: CompTIA Official Registration
Pearson VUE Exam Scheduling
Sample Questions: CompTIA XK0-006 Sample Questions
Exam Way: Online proctored or onsite at Pearson VUE testing centers
Pre Condition: No mandatory prerequisites; 12 months of hands-on Linux experience or CompTIA A+/Network+/Server+ recommended
Official Syllabus URL: https://www.comptia.org/certifications/linux

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CompTIA XK0-006 Prüfungsplan:

Thema Einzelheiten
Thema 1
  • Troubleshooting: Addresses diagnosing and resolving issues across system health, hardware, storage, networking, security configurations, and performance optimization.
Thema 2
  • Services and User Management: Covers day-to-day Linux administration including file management, user accounts, processes, software, services, and container operations.
Thema 3
  • Security: Focuses on securing Linux systems through authentication, firewalls, OS hardening, account policies, cryptography, and compliance checks.
Thema 4
  • Automation, Orchestration, and Scripting: Covers task automation with tools like Ansible, shell and Python scripting, Git version control, and responsible AI-assisted development.

 

CompTIA Linux+ Certification Exam XK0-006 Prüfungsfragen mit Lösungen (Q121-Q126):

121. Frage
A DevOps engineer made some changes to files on a local repository. The engineer realizes that the changes broke the application and the changes need to be reverted back. Which of the following commands is the best way to accomplish this task?

  • A. git pull
  • B. git rebase
  • C. git reset
  • D. git stash

Antwort: C

Begründung:
The git reset command reverts changes in the local repository to a previous commit, effectively discarding the problematic modifications and restoring the application to a working state.

 

122. Frage
A new drive was recently added to a Linux system. Using the environment and tokens provided, complete the following tasks:
* Create an appropriate device label.
* Format and create an ext4 file system on the new partition.
The current working directory is /.

Antwort:

Begründung:

Explanation:

To create an appropriate device label, format and create an ext4 file system on the new partition, you can use the following commands:
To create a GPT (GUID Partition Table) label on the new drive /dev/sdc, you can use the parted command with the -s option (for script mode), the device name (/dev/sdc), the mklabel command, and the label type (gpt). The command is:
parted -s /dev/sdc mklabel gpt
To create a primary partition of 10 GB on the new drive /dev/sdc, you can use the parted command with the -s option, the device name (/dev/sdc), the mkpart command, the partition type (primary), the file system type (ext4), and the start and end points of the partition (1 and 10G). The command is:
parted -s /dev/sdc mkpart primary ext4 1 10G
To format and create an ext4 file system on the new partition /dev/sdc1, you can use the mkfs command with the file system type (ext4) and the device name (/dev/sdc1). The command is:
mkfs.ext4 /dev/sdc1
You can verify that the new partition and file system have been created by using the lsblk command, which will list all block devices and their properties.

 

123. Frage
Which of the following Ansible components contains a list of hosts and host groups?

  • A. Inventory
  • B. Fact
  • C. Collection
  • D. Playbook

Antwort: A

Begründung:
In Ansible, the inventory defines the list of managed nodes (hosts) and groups of hosts. It is the source from which Ansible knows what systems to configure or manage.

 

124. Frage
A systems administrator is creating a backup copy of the /home/ directory. Which of the following commands allows the administrator to archive and compress the directory at the same time?

  • A. rsync -z /backups/home.tar.xz /home/
  • B. dd of=/backups/home.tar.xz if=/home/
  • C. cpio -o /backups/home.tar.xz /home/
  • D. tar -cJf /backups/home.tar.xz /home/

Antwort: D

Begründung:
Creating backups is a core responsibility in Linux system management, and the Linux+ V8 objectives emphasize proper use of archiving and compression tools. The tar utility is the standard Linux tool for creating archive files, and it also supports compression through various options.
The command tar -cJf /backups/home.tar.xz /home/ correctly combines both archiving and compression in a single step. The -c option creates a new archive, -J specifies XZ compression, and -f allows the administrator to define the output file name. This results in a compressed archive of the entire /home/ directory, which is efficient for storage and transfer.
The other options are incorrect. cpio is an archiving tool but does not perform compression by itself without additional commands or pipelines. rsync -z compresses data during transfer but does not create an archive file.
The dd command performs low-level copying of raw data and is not suitable for directory-based backups.
Linux+ V8 documentation highlights tar as the preferred utility for filesystem backups due to its flexibility, reliability, and support for multiple compression algorithms. Therefore, the correct answer is C.

 

125. Frage
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?

  • A. Closing port 80 on the network switch to block traffic
  • B. Disabling and removing the Telnet service on the server
  • C. Changing the system administrator's password to prevent unauthorized access
  • D. Configuring a firewall to block traffic on port 23 on the server

Antwort: B

Begründung:
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.

 

126. Frage
......

XK0-006 Fragenpool: https://www.zertpruefung.ch/XK0-006_exam.html

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