Courseiva provides practice questions to reinforce the Linux Foundation Certified System Administrator LFCS concepts tested in the real exam. The real LFCS is hands-on and performance-based — these questions build the knowledge foundation for your lab preparation.
Performance-based exam
The real LFCS exam is entirely performance-based — you complete practical Linux system administration tasks in a live environment. There are no multiple-choice questions. Courseiva practice questions reinforce the concepts tested, but hands-on lab practice with filesystems, networking, user management, and service configuration is still required.
Use these questions as a knowledge check
Answer each question, read the explanation carefully, and connect the concept back to the relevant lab task. These questions build the knowledge foundation for hands-on LFCS lab practice.
This free LFCS mock exam uses the same question distribution as the real Linux Foundation Certified System Administrator LFCS exam. Each session draws questions proportionally from all 6 official blueprint domains published by Linux Foundation, so the topic mix you see accurately reflects what you'll face on test day.
LFCS Domain Distribution
User and Group Management
Operation of Running Systems
Essential Commands
Networking
Service Configuration
Storage Management
Every question is written by certified engineers against the 2026 LFCS exam objectives. These are original practice questions — not dumps — so you build real understanding rather than memorising answers.
Both the mock exam and practice test use the same question bank. The difference is in how you use them — and when to use each during your LFCS study plan.
Practice test — for learning
Use the LFCS practice test when you are studying a domain. Answer questions, read every explanation immediately, and build understanding. Do 10–30 questions per domain per session. This is your primary study tool for the first 4 weeks.
Go to practice test →Concept review — for knowledge check
Use the LFCS concept review sessions to benchmark your knowledge coverage across all topics. Work through a full question set, review every explanation, and use weak areas to guide your hands-on lab practice priorities.
Start 120-question concept review →Try these sample questions from the mock exam bank. Commit to an answer before revealing the explanation.
A developer was removed from the 'developers' group but still needs to run commands that require membership in that group. The user has logged out and back in, but the issue persists. What is the most likely cause?
Select an answer to reveal the explanation
A system administrator needs to ensure that a specific service, 'myapp', starts automatically after a system crash and also restarts if it fails. Which systemd unit directive should be used to achieve this behavior?
Select an answer to reveal the explanation
A user reports that a script fails with 'Permission denied' when executed. The script has permissions -rw-r--r-- and is owned by the user. Which command should the user run to make the script executable for the owner only?
Select an answer to reveal the explanation
A system administrator notices that a web server is not reachable from the internet but is reachable from the internal network. The server's IP is 10.0.1.10/24, and the gateway is 10.0.1.1. Which command should be used to verify the default gateway configuration?
Select an answer to reveal the explanation
A system administrator configures a web server using systemd. After creating a custom service unit file, the administrator runs `systemctl daemon-reload` but the service still fails to start with a 'Unit not found' error. What is the most likely cause?
Select an answer to reveal the explanation
A system administrator is tasked with setting up a new 2TB disk for a database server. The database requires high read/write performance and redundancy. The server has a hardware RAID controller, but the administrator wants to use Linux software RAID for flexibility. Which of the following RAID levels should the administrator choose to maximize performance while providing fault tolerance, assuming the disk will be part of a larger array in the future?
Select an answer to reveal the explanation
Answer all 6 questions to see your domain score breakdown
Passing LFCS requires both conceptual understanding and hands-on competency. Use these questions to reinforce concepts, then immediately practise the corresponding lab tasks. Candidates who combine concept review with lab exercises pass at significantly higher rates.
Use these questions to confirm you understand the theory behind each LFCS topic before attempting it in a lab. If you cannot explain why an answer is correct, revisit the concept before moving to the hands-on exercise.
After each concept question block, immediately run the equivalent command or configuration in a lab environment. Theory without practice does not pass performance-based exams.
Note which topics have low accuracy in these questions. Those are also the lab tasks most likely to trip you up. Prioritise additional hands-on practice in those areas.
The real LFCS exam runs 120 minutes. During the exam, read each task description carefully, manage your time across tasks, and move on if stuck — come back rather than losing all remaining time.
Time limit
120 min
Official exam duration
Linux Foundation Certified System Administrator LFCS is a performance-based exam. Your score is based on whether tasks are completed correctly in a live environment, not on multiple-choice answers. Strong concept coverage — tested through these questions — is one part of preparation. Hands-on lab practice is still required.
Yes. Courseiva provides free LFCS mock exam questions across all official exam domains. The platform includes timed simulation, per-domain score breakdown, missed-question review, and readiness tracking. No account required — free forever, supported by advertising.
The practice test is optimised for learning: you see explanations after each question immediately. The mock exam is optimised for simulation: you answer all questions under time pressure and review at the end. Use practice tests for studying and mock exams for benchmarking.
These questions test your conceptual knowledge. Aim to fully understand every explanation before attempting the hands-on lab exam. High accuracy here indicates solid concept coverage, but hands-on lab practice is still required to pass LFCS.
Most candidates preparing for LFCS work through these concept questions multiple times while simultaneously doing hands-on lab exercises. Repeat topics where your accuracy is low, then confirm understanding with a lab exercise on the same topic.
No — all Courseiva questions are original, written by certified engineers against public Linux Foundation exam blueprints. Exam dumps are memorised real exam questions shared illegally. Using dumps violates your Linux Foundation certification agreement and can result in your certification being revoked. Our questions make you genuinely competent, not just test-day lucky.
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