Updated Dec-2025 Test Engine to Practice XK0-006 Dumps & Practice Exam
Dumps Collection XK0-006 Test Engine Dumps Training With 92 Questions
NEW QUESTION # 11
Which of the following is a characteristic of Python 3?
- A. It is fully backwards compatible.
- B. It is extensible through modules.
- C. It is closed source.
- D. It is binary compatible with Java.
Answer: B
Explanation:
Python 3 is open source and supports extensibility through modules and packages, allowing developers to add functionality easily. It is not fully backward compatible with Python 2 and has no binary compatibility with Java.
NEW QUESTION # 12
Which of the following cryptographic functions ensures a hard drive is encrypted when not in use?
- A. GPG
- B. PKI certificates
- C. OpenSSL
- D. LUKS
Answer: D
Explanation:
LUKS (Linux Unified Key Setup) provides full-disk encryption, ensuring that the data on a hard drive is protected and unreadable when the system is powered off or the drive is not in use.
NEW QUESTION # 13
Which of the following best describes a use case for playbooks in a Linux system?
- A. To provide the security information required for a container
- B. To provide a set of tasks and configurations to deploy an application
- C. To provide the instructions for implementing version control on a repository
- D. To provide the storage volume information required for a pod
Answer: B
Explanation:
In Ansible, a playbook is a YAML file that defines tasks, configurations, and automation workflows. It is commonly used to deploy applications, configure systems, and manage infrastructure on Linux systems.
NEW QUESTION # 14
A systems administrator receives reports about connection issues to a secure web server. Given the following firewall and web server outputs:
Which of the following commands best resolves this issue?
- A. ufw allow 4096/tcp
- B. ufw delete deny https/tcp
- C. ufw disable
- D. ufw allow 80/tcp
Answer: B
Explanation:
The firewall output shows that port 443/tcp (HTTPS) is explicitly denied, even though the web server is correctly listening on it. Removing the deny rule for HTTPS (ufw delete deny https/tcp) resolves the issue while still keeping the firewall active and secure.
NEW QUESTION # 15
A Linux administrator wants to add a user to the Docker group without changing their primary group. Which of the following commands should the administrator use to complete this task?
- A. sudo usermod -aG docker user
- B. sudo groupmod docker user
- C. sudo usermod -g docker user
- D. sudo groupmod -G docker user
Answer: A
Explanation:
The usermod -aG command appends (-a) the user to a supplementary group (-G) without changing their primary group. This is the correct way to add a user to the docker group.
NEW QUESTION # 16
Which of the following commands should a Linux administrator use to determine the version of a kernel module?
- A. depmod bluetooth
- B. modinfo bluetooth
- C. lsmod bluetooth
- D. modprobe bluetooth
Answer: B
Explanation:
The modinfo command displays detailed information about a kernel module, including its version, author, description, and parameters.
NEW QUESTION # 17
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 stash
- B. git reset
- C. git rebase
- D. git pull
Answer: B
Explanation:
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.
NEW QUESTION # 18
An average of one out of three users in a company cannot reach the company website. A Linux administrator determines that one of the three website servers is down. The administrator inspects the DNS configuration for the website and notices the following entry:
Which of the following accurately explains the issue?
- A. The administrator has incorrectly configured the DNS server to be an iterative resolver instead of an authoritative resolver.
- B. The DNS configuration is missing corresponding AAAA records and PTR records, and this is causing clients to fail the hostname translation.
- C. One of the DNS records has not been signed with a DNSSEC-supported key, and this is causing some web browsers to reject the DNS response.
- D. DNS returns all three records in a different order each time, and the browser typically uses the first address in the DNS response.
Answer: D
Explanation:
With multiple A records, DNS performs simple round-robin ordering and returns the records in a different sequence on each query. Most clients try the first address returned-so when the downed server's IP appears first (about one in three times), those users cannot connect.
NEW QUESTION # 19
A systems administrator is deploying a web server using the following code:
Which of the following technologies is the administrator using to create this web server?
- A. Puppet
- B. Terraform
- C. Chef
- D. Ansible
Answer: C
Explanation:
The code uses Chef's Ruby DSL for defining a role with name, description, run_list, and default_attributes, which are constructs specific to Chef.
NEW QUESTION # 20
A systems administrator changed the file permissions on the myfile file:
$ sudo chmod g+w myfile
$ ls -l myfile
-rwxrwxr-x 1 admin editors C 2022-10-13 10:45 myfile
Then the administrator added an existing user test to the editors group:
$ sudo usermod -aG editors test
However, the user test is still unable to edit the file. Which of the following solutions will fix this issue?
- A. The file is only writable by the root user, and the user test needs root permissions.
- B. The group for the user test needs to be reloaded by running sudo source /etc/group.
- C. The user test needs to log out and log back in before editing the myfile file.
- D. In order to edit the file, additional permissions are required that the user test does not have.
Answer: C
Explanation:
Group membership is only applied at login time. Having added "test" to the editors group, they must log out and log back in before the new group permissions take effect.
NEW QUESTION # 21
Which of the following is a protocol for accessing distributed directory services containing a hierarchy of users, groups, machines, and organization units?
- A. LDAP
- B. KRB-5
- C. SMB
- D. TLS
Answer: A
Explanation:
LDAP (Lightweight Directory Access Protocol) is specifically designed for accessing and maintaining distributed directory services that organize users, groups, computers, and organizational units in a hierarchical structure.
NEW QUESTION # 22
A Linux administrator is attempting to capture all network traffic coming to the server from the
10.0.6.5 IP address. Which of the following commands should the administrator run on the server to achieve the goal?
- A. tcpdump net 10.0.6.5
- B. tcpdump host 10.0.6.5
- C. tcpdump addr 10.0.6.5
- D. tcpdump ip 10.0.6.5
Answer: B
Explanation:
tcpdump host 10.0.6.5applies a Berkeley Packet Filter that matches any packets to or from the IP 10.0.6.5, capturing all traffic involving that host. The netqualifier is for entire subnets, ip isn't a valid filter keyword by itself, and addris not recognized in tcpdump's filter syntax.
NEW QUESTION # 23
A Linux administrator needs to create and then connect to the app-01-imagecontainer. Which of the following commands accomplishes this task?
- A. docker exec -dc app-01-image
- B. docker run -it app-01-image
- C. docker start -td app-01-image
- D. docker build -ic app-01-image
Answer: B
Explanation:
The docker run -it command both creates a new container from the specified image and attaches to it interactively, which is exactly what the administrator needs.
NEW QUESTION # 24
A Linux administrator is making changes to local files that are part of a Git repository. The administrator needs to retrieve changes from the remote Git repository. Which of the following commands should the administrator use to save the local modifications for later review?
- A. git stash
- B. git fetch
- C. git merge
- D. git pull
Answer: A
Explanation:
The git stash command temporarily saves local modifications without committing them, allowing the administrator to safely run git pull or git fetch later and then reapply the saved changes.
NEW QUESTION # 25
Which of the following most accurately describes a webhook?
- A. An SNMP-based API for network device monitoring
- B. An authentication method for web-server communication
- C. An HTTP-based callback function
- D. A means to transmit sensitive information between systems
Answer: C
Explanation:
A webhook is an HTTP-based callback that allows one system to send real-time data or notifications to another system when an event occurs.
NEW QUESTION # 26
A systems administrator needs to validate that the dm_multipathdriver was loaded in a Linux system. Which of the following commands should the administrator use?
- A. lsmod | grep dm_multipath
- B. modprobe | grep dm_multipath
- C. insmod | grep dm_multipath
- D. modinfo | grep dm_multipath
Answer: A
Explanation:
lsmodlists currently loaded kernel modules; piping to grep dm_multipathconfirms whether that specific driver is active in the running kernel.
NEW QUESTION # 27
A systems administrator attempts to edit a file as root, but receives the following error:
Which of the following commands allows the administrator to edit the file?
- A. chattr -i /etc/resolv.conf
- B. chmod 750 /etc/resolv.conf
- C. chgrp root /etc/resolv.conf
- D. chown root /etc/resolv.conf
Answer: A
Explanation:
The lsattr output shows the immutable (i) attribute set on /etc/resolv.conf. This prevents any modifications, even by root. Running chattr -i removes the immutable flag, allowing the administrator to edit the file.
NEW QUESTION # 28
After system startup, the X Window System GUI login interface is not displaying. Which of the following commands ensures that the GUI is started during the system startup process?
- A. systemctl enable xwindow.service
- B. systemctl isolate graphical.target
- C. systemctl unmask xwindow.service
- D. systemctl set-default graphical.target
Answer: D
Explanation:
Setting the default target to graphical.targettells systemd to boot into the graphical interface on startup. The command systemctl set-default graphical.targetmakes the GUI login display automatically at boot.
NEW QUESTION # 29
Which of the following best describes JSON?
- A. A file format for exchanging information or data between systems
- B. An open-source platform that facilitates the creation and administration of isolated environments
- C. A software-based technique that allows a computer to simulate one or more machines so they appear to be real
- D. A programming language that developers use to build dynamic websites
Answer: A
Explanation:
JSON (JavaScript Object Notation) is a lightweight data-interchange format that is easy for humans to read and write, and easy for machines to parse and generate. JSON is commonly used to transmit data between a server and a client, as it is language-independent and can be used in many environments.
NEW QUESTION # 30
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