CompTIA certification XK0-006 exam targeted exercises

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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 Linux+
Passing Score:720 (on a scale of 100โ€“900)
Real Exam Qty:Maximum of 90
Available Languages:English
Exam Price:USD 348
Exam Format:Multiple-choice, Performance-based
Certificate Validity Period:3 years
Exam Duration:90 minutes
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

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CompTIA XK0-006 Exam Syllabus Topics:

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

CompTIA Linux+ Certification Exam Sample Questions (Q144-Q149):

NEW QUESTION # 144
SIMULATION 3
You are a systems administrator and have created an uncompressed backup of the application directory. Several hours later, you must restore the application from backup.
INSTRUCTIONS
Within each tab, click on an object to form the appropriate command used to create the backup and restore the application.
Command objects may only be used once, but the spacebar object may be used multiple times.
Not all objects will be used. Click the arrow to remove any unwanted objects from your command.
If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.

Answer:

Explanation:


-cvf creates (-c) a verbose (-v) archive file (-f) named /backups/application.tar.
-C /opt/ application changes to /opt/ so only the relative application directory is saved, avoiding absolute paths.
-xvf extracts (-x) the same archive, and -C /opt/ restores the contents back into the original location.


NEW QUESTION # 145
A Linux administrator needs to create accounts for a list of new users. The user account names have been defined in the USER_LIST variable as follows:
USER_LIST= " alice bob charles "
Which of the following commands should the administrator use to successfully create the user accounts?

Answer: A

Explanation:
Automating user creation is a frequent administrative task. In shell scripting, when you have a space- separated list of items stored in a variable, the for loop is the most efficient way to iterate through them.
According to CompTIA Linux+ V8, the syntax for < variable > in < list > ; do < commands > ; done allows the shell to split the list by whitespace and assign each item to the variable sequentially.
In the command for username in $USER_LIST; do useradd -m " $username " ; done:
* The shell expands $USER_LIST into alice, bob, and charles.
* In the first iteration, username is set to alice, and useradd -m " alice " is executed.
* The process repeats for bob and then charles.
* The -m flag ensures a home directory is created for each user, which is a best practice.
The other options are syntactically incorrect or unsuitable. Options A and B attempt to use while and until with echo, but they lack the read command required to actually assign the piped input to the username variable (e.g., while read username). Option C (select) is used for creating interactive menus for users to choose from, not for automated batch processing.
Therefore, the for loop is the verified and standard method for this task in a Linux environment.


NEW QUESTION # 146
Which of the following is a protocol for accessing distributed directory services containing a hierarchy of users, groups, machines, and organizational units?

Answer: A

Explanation:
Directory services are a key part of enterprise Linux environments and are covered under the Security domain in Linux+ V8. The Lightweight Directory Access Protocol (LDAP) is specifically designed to access and manage distributed directory information.
LDAP directories store structured, hierarchical data such as users, groups, computers, and organizational units. Linux systems commonly use LDAP for centralized authentication, authorization, and identity management. LDAP is also the foundation for services like Active Directory and FreeIPA.
The other options are incorrect. SMB is a file and printer sharing protocol. TLS is an encryption protocol used to secure communications. Kerberos (KRB-5) is an authentication protocol often used alongside LDAP but does not store directory information itself.
Linux+ V8 documentation highlights LDAP as the primary protocol for directory-based identity services.
Therefore, the correct answer is C.


NEW QUESTION # 147
Which of the following Ansible components contains a list of hosts and host groups?

Answer: A

Explanation:
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.


NEW QUESTION # 148
A systems administrator is working on an SFTP server configuration. Which of the following commands will best enable the connectivity to that service from the 10.10.0.0/24 network?

Answer: C

Explanation:
The command sudo ufw allow from 10.10.0.0/24to any port 22 explicitly opens TCP port 22 (used by SFTP/SSH) only for hosts in the 10.10.0.0/24 network.


NEW QUESTION # 149
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