350-701 Practice Question: Secure Network Access, Visibility and Enforcement
An engineer is deploying Cisco ISE for guest access. The guest portal uses a self-provisioned username and password. To ensure secure credential transmission, which protocol should be enforced on the portal?
⚠ Common exam trap
Cisco often tests the distinction between securing the control plane (RADIUS/TLS) versus securing the user-facing portal (HTTPS), leading candidates to confuse RADIUS over TLS with web encryption.
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
✓
HTTPS with a valid certificate
HTTPS with a valid certificate ensures that the username and password submitted by the guest are encrypted in transit between the browser and the Cisco ISE portal. This prevents man-in-the-middle attacks and credential sniffing, which is critical for a self-provisioned guest portal where users create their own credentials over an untrusted network.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
DNSSEC
Why it's wrong here
Provides DNS authentication, not encryption.
- ✗
RADIUS over TLS
Why it's wrong here
Used between NAS and ISE, not client to portal.
- ✓
HTTPS with a valid certificate
Why this is correct
Encrypts credentials between client and portal.
- ✗
HTTP with redirect to captive portal
Why it's wrong here
HTTP transmits credentials in cleartext.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 350-701 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 350-701 exam.