DevOps Linux Essentials - Practice Questions 2026
Course Description
Mastering Linux is the non-negotiable first step for any aspiring DevOps Engineer. Welcome to the DevOps Linux Essentials - Practice Questions, a comprehensive suite designed to bridge the gap between theoretical knowledge and production-level expertise.
These practice exams are meticulously crafted to simulate the pressure and complexity of real-world environments. Whether you are aiming for a certification or preparing for a high-stakes technical interview, these tests provide the rigorous validation you need to succeed.
Why Serious Learners Choose These Practice Exams
Serious learners understand that memorizing commands is not enough; you must understand the "why" behind every configuration. This course stands out because it focuses on logic, security, and automation. We prioritize deep conceptual understanding, ensuring that you don't just pass a test, but actually gain the confidence to manage Linux servers in a professional DevOps pipeline.
Course Structure
Our curriculum is organized into six logical stages to ensure a steady learning curve and comprehensive coverage:
Basics / Foundations: This section focuses on the essential navigation of the Linux filesystem, file permissions, and basic command-line utilities. It ensures your "ground floor" knowledge is unshakable.
Core Concepts: Here, we dive into user management, group policies, and package management. You will tackle questions regarding the installation and maintenance of software across different distributions.
Intermediate Concepts: This stage introduces shell scripting, process management, and networking basics. You will learn to manipulate data streams and manage system resources efficiently.
Advanced Concepts: This module covers SSH security, system logging, storage management (LVM), and kernel tuning. It is designed for those looking to master system optimization.
Real-world Scenarios: These questions place you in the shoes of a DevOps Engineer. You will solve issues related to log rotation, troubleshooting connectivity, and automating repetitive tasks.
Mixed Revision / Final Test: A high-pressure, randomized exam covering all previous topics to test your retention and readiness for the actual certification or job role.
Sample Practice Questions
Question 1
A DevOps engineer needs to change the ownership of a directory named /data and all its contents to the user 'jenkins' and group 'devops'. Which command should be used?
Option 1: chown jenkins:devops /data
Option 2: chmod -R jenkins:devops /data
Option 3: chown -R jenkins:devops /data
Option 4: chown -r devops:jenkins /data
Option 5: setfacl -m u:jenkins:rwx /data
Correct Answer: Option 3
Correct Answer Explanation: The chown command is used to change file ownership. The -R (recursive) flag is required to apply the change to the directory and all files/subdirectories within it. The syntax user:group correctly assigns both.
Wrong Answers Explanation:
Option 1: This only changes the ownership of the directory itself, not its contents.
Option 2: chmod is used for changing permissions (read/write/execute), not ownership.
Option 3: This is the correct method.
Option 4: The -r flag is lowercase (which is invalid for chown in many versions) and the user/group order is swapped.
Option 5: setfacl modifies Access Control Lists, which is for fine-grained permissions, not primary ownership.
Question 2
Which of the following signals is sent when a user executes the kill -9 <PID> command?
Option 1: SIGTERM
Option 2: SIGINT
Option 3: SIGKILL
Option 4: SIGHUP
Option 5: SIGSTOP
Correct Answer: Option 3
Correct Answer Explanation: The -9 flag explicitly sends the SIGKILL signal. This signal cannot be caught, blocked, or ignored by the process, resulting in an immediate termination.
Wrong Answers Explanation:
Option 1: SIGTERM is the default signal (signal 15) which allows for a graceful shutdown.
Option 2: SIGINT (signal 2) is equivalent to pressing Ctrl+C.
Option 4: SIGHUP (signal 1) is used to notify a process that its controlling terminal has closed or to reload configurations.
Option 5: SIGSTOP (signal 19) pauses the process rather than terminating it.
Question 3
You need to find all files larger than 100MB in the /var/log directory. Which command is most appropriate?
Option 1: find /var/log -size +100M
Option 2: ls -lh /var/log | grep 100M
Option 3: locate -s 100M /var/log
Option 4: find /var/log -threshold 100M
Option 5: search /var/log --big 100M
Correct Answer: Option 1
Correct Answer Explanation: The find command is the standard utility for searching files based on attributes. The -size flag with +100M correctly filters for files greater than 100 Megabytes.
Wrong Answers Explanation:
Option 2: ls combined with grep is unreliable for filtering by size as the output format of ls -lh can vary and may not catch all files in subdirectories.
Option 3: locate uses a database and does not support real-time size filtering.
Option 4: -threshold is not a valid flag for the find command.
Option 5: search is not a standard native Linux command for this purpose.
Course Features
Welcome to the best practice exams to help you prepare for your DevOps Linux Essentials. We are committed to your success and provide a premium learning environment:
Unlimited Retakes: You can retake the exams as many times as you want to ensure mastery.
Original Question Bank: This is a huge, original question bank updated regularly to reflect modern DevOps standards.
Instructor Support: You get direct support from instructors if you have questions or need clarification on complex topics.
Detailed Explanations: Each question has a detailed explanation so you learn from your mistakes immediately.
Mobile Access: Fully mobile-compatible with the Udemy app, allowing you to study on the go.
Risk-Free: 30-day money-back guarantee if you are not satisfied with the quality of the content.
We hope that by now you're convinced! And there are a lot more questions inside the course.
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