Prepare for the CompTIA Linux+ with your personal AI tutor
Practice topic by topic, with every answer explained. The first topic is free, and every other topic is included in Astra AI Sigma.
Understand it. Don’t just memorize it.
On the CompTIA Linux+ you score when you understand what the question is really asking. The questions are grouped by topic, and the tutor shows you how to approach each one.
305 practice questions across 5 topics. The first topic is free.
What does the prep cover?
The main content areas of the CompTIA Linux+.
System management covered.
Boot process, storage, packages and services.
Security made clear.
Permissions, users, SELinux and firewalls.
Scripting and automation step by step.
Bash scripts, Git and configuration tools.
Troubleshooting with practice.
Performance, storage and network issues.
Practice until it sticks.
You answer questions grouped by the topics of the CompTIA Linux+ and see right away where you stand.
Questions with instant feedback.
You answer a question and get feedback right away. If you miss it, you see where it went wrong and how to approach it next time.
Stuck? Ask the tutor.
Not sure what chmod 750 actually does? Just ask. The tutor explains it bit by bit.
A mock exam, before the real one.
When you want to know where you stand, take a mock exam and see which topics still need work.
A little every day, without the stress.
A little every day beats a whole weekend of cramming right before the exam. You can see your progress topic by topic.
How does the prep work?
From topic to real understanding, in three steps.
1. Pick a topic
Start with the one that worries you most, or go in order.
2. Answer questions
Work through questions on that topic and see right away what you got right and what you missed.
3. Actually understand it
Your personal AI tutor explains every answer and tracks your progress topic by topic.
The first topic is free
You try the first topic with a free Astra AI account. The other topics unlock with Astra AI Sigma.
Frequently asked questions
For sysadmins and engineers who manage Linux systems.
The prep covers the main content areas of the CompTIA Linux+: system management (boot process, storage, packages and services); security (permissions, users, SELinux and firewalls); scripting and automation (bash scripts, Git and configuration tools); troubleshooting (performance, storage and network issues).
They are grouped by topic: 305 questions across 5 topics, so you can work through the whole exam one area at a time.
You try the first topic with a free Astra AI account. If you want to keep going with the other topics, you unlock them with Astra AI Sigma.
No. The tutor explains why an answer is right or wrong and helps you solve the next similar question on your own.
Astra AI Sigma gives you every official exam prep in the app, such as IB Math, plus everything in Astra AI Plus.