Domain 5 · 20% of Exam

Security

Enterprise security covering AAA, 802.1X, MACsec, TrustSec, and network access control.

About This Domain

Domain 5 — Security — accounts for 20% of the ENCOR certification exam. This domain evaluates your understanding of aaa with radius and tacacs+, 802.1x port-based authentication, macsec (802.1ae) link-layer encryption, and related concepts. Enterprise security covering AAA, 802.1X, MACsec, TrustSec, and network access control. To pass this section you need practical knowledge of how these services and patterns work together in real-world architectures.

What You'll Be Tested On

  • AAA with RADIUS and TACACS+
  • 802.1X port-based authentication
  • MACsec (802.1AE) link-layer encryption
  • CoPP (Control Plane Policing)
  • TrustSec and SGTs
  • Endpoint security and Cisco ISE

Key Cisco Technologies in This Domain

Study Strategy for Domain 5

While 20% might seem like a smaller portion of the exam, every point counts toward the passing score. Focus on understanding core concepts and common exam scenarios for this domain.

Exam Tips for Domain 5

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802.1X involves three parties: supplicant, authenticator, authentication server.

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CoPP protects the router CPU from denial-of-service attacks on the control plane.

Frequently Asked Questions

How many questions on the ENCOR exam come from Domain 5?

Domain 5 (Security) makes up 20% of the ENCOR exam. The exam has 65 scored questions, so approximately 13 questions will come from this domain.

What services should I focus on for Domain 5?

The key services for this domain include Security, Wireless. Make sure you understand how each service works, its use cases, and how they integrate with one another.

How should I prepare for Security questions?

Start by reviewing the key topics listed above, then practice with domain-specific questions. Focus on understanding real-world scenarios rather than memorizing facts.

What's the best order to study the ENCOR domains?

Many candidates start with the highest-weighted domains first. For the ENCOR exam, the domains in order of weight are: Architecture (15%), Virtualization (10%), Infrastructure (30%), Network Assurance (10%), Security (20%), Automation (15%).

Practice Domain 5 Questions

Test your knowledge of Security with practice questions from our ENCOR question bank.

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