SISE Web Auth And Guest Services Practice Question
A guest user reports they receive a certificate warning when redirected to the ISE Guest portal. What is the most common cause of this issue?
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 ISE server certificate is self-signed or not trusted by the client device.
Guest portals use HTTPS. If the ISE certificate is not signed by a trusted CA, the browser will display a warning.
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 ISE portal is configured for HTTP instead of HTTPS.
Why it's wrong here
ISE forces HTTPS for guest portals.
- ✗
The DNS server is not resolving the ISE FQDN.
Why it's wrong here
This would lead to a 'page not found' error, not a certificate warning.
- ✓
The ISE server certificate is self-signed or not trusted by the client device.
Why this is correct
Browsers require trusted certificates for secure connections.
- ✗
The switch is not configured for SSL interception.
Why it's wrong here
Switches do not perform SSL interception for CWA.
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.