PCNSE Practice Question: Securing Users and Applications with Authentication
An organization needs to enforce authentication for application-based policies. Users are in multiple AD groups. Which authentication enforcement method best scales and minimizes administrative overhead?
⚠ Common exam trap
Test-takers frequently confuse User-ID (which passively maps users to IPs) with Authentication Policy (which actively enforces authentication), leading them to choose SSL Decryption or Kerberos SSO as the enforcement mechanism rather than the policy that triggers the authentication challenge.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Authentication Policy with user group mapping
Authentication Policy with user group mapping (Option E) is the correct answer because it allows the firewall to enforce authentication based on user group membership without requiring per-user credentials at the firewall. By integrating with Active Directory via LDAP or Kerberos, the firewall can map users to groups and apply authentication policies that scale across thousands of users, minimizing administrative overhead as group changes are automatically reflected.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Single Sign-On with Kerberos
Why it's wrong here
Kerberos SSO requires realm setup and may not scale as well for many groups.
- ✗
Captive Portal with RADIUS
Why it's wrong here
RADIUS may require additional server configuration and does not natively support group mapping.
- ✗
SSL Decryption with User-ID
Why it's wrong here
SSL decryption does not enforce authentication.
- ✗
GlobalProtect with client certificate
Why it's wrong here
Client certificates require management and are not group-aware.
- ✓
Authentication Policy with user group mapping
Why this is correct
Authentication Policy can match source-user groups from LDAP, scaling easily with group membership.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This PCNSE practice question is part of Courseiva's free Palo Alto Networks certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PCNSE exam.