About This Domain
Domain 2 — Security — accounts for 21% of the LINUXPLUS certification exam. This domain evaluates your understanding of file permissions and acls, selinux/apparmor, firewall (iptables, firewalld, nftables), and related concepts. Linux security hardening. To pass this section you need practical knowledge of how these technologies work together.
What You'll Be Tested On
- File permissions and ACLs
- SELinux/AppArmor
- Firewall (iptables, firewalld, nftables)
- SSH hardening and key-based auth
Key Technologies in This Domain
Study Strategy for Domain 2
While 21% might seem like a smaller portion, every point counts toward the passing score.
Exam Tips for Domain 2
Know chmod, chown, and how to interpret permission octals.
Frequently Asked Questions
How many questions come from Domain 2?
Domain 2 (Security) makes up 21% of the LINUXPLUS exam.
What should I focus on for Domain 2?
Key topics include Security.
How should I prepare for Security questions?
Review key topics, then practice with domain-specific questions focusing on real-world scenarios.
What's the best order to study LINUXPLUS domains?
Start with highest-weighted: System Management (32%), Security (21%), Scripting and Automation (19%), Networking (14%), Troubleshooting (14%).
Practice Domain 2 Questions
Test your knowledge of Security with practice questions from our LINUXPLUS question bank.
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