SDSI Risk Events And Requirements Practice Question
A security architect is adapting a design post-incident after a credential theft event. Which Cisco ISE feature should be integrated into the architecture to mitigate the risk of compromised static credentials?
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
✓
Enabling MFA integration with Cisco Duo via RADIUS.
Cisco ISE supports Multi-Factor Authentication (MFA) integration via RADIUS/TACACS+ to mitigate credential theft risk.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Deploying Cisco pxGrid to share user identity info with the firewall.
Why it's wrong here
pxGrid shares context, it does not secure the authentication process itself.
- ✗
Configuring Cisco TrustSec to segment user traffic based on IP address.
Why it's wrong here
TrustSec uses SGTs, not IP addresses, and doesn't solve credential theft.
- ✗
Implementing Cisco AnyConnect Device Posture assessment.
Why it's wrong here
Posture checks device health, not user identity integrity.
- ✓
Enabling MFA integration with Cisco Duo via RADIUS.
Why this is correct
Duo integration with ISE provides MFA for network access, mitigating static credential risk.
Quick reference
AAA Protocol Comparison
| Protocol | Port(s) | Encryption | Transport | Primary Use |
|---|---|---|---|---|
| RADIUS | 1812 / 1813 | Password only | UDP | Network access control |
| TACACS+ | 49 | Full packet | TCP | Device administration |
| Diameter | 3868 | Full session | TCP / SCTP | Carrier / mobile networks |
| 802.1X | — | EAP-based | Layer 2 | Port-based access control |
TACACS+ encrypts the entire packet; RADIUS only encrypts the password field — a key exam distinction.
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 SDSI 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 SDSI exam.