SISE Web Auth And Guest Services Practice Question
A Guest user is stuck in a loop and cannot access the internet after authenticating. The NAD log shows the session is bouncing between the redirect state and authorized state. What is the most likely cause?
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
✓
The Redirect ACL does not permit traffic to the ISE PSN IP.
If the Redirect ACL is not properly configured to exclude the ISE PSN IP, the traffic to the ISE portal might get redirected again, causing a loop.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The guest user account is expired.
Why it's wrong here
This would deny access, not cause a loop.
- ✗
The switch is configured for redundant ISE nodes.
Why it's wrong here
Redundancy does not cause redirect loops.
- ✓
The Redirect ACL does not permit traffic to the ISE PSN IP.
Why this is correct
If traffic to ISE is captured by the redirect rule, a loop occurs.
- ✗
The CoA port is blocked by a firewall.
Why it's wrong here
This would cause authentication to fail, not a redirect loop.
Visual reference
About these practice questions
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official Cisco exam blueprint
This SISE practice question is part of Courseiva's free Cisco 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 SISE exam.