hardMultiple ChoiceObjective-mapped
350-701 Practice Question: Uses Cisco ISE with TrustSec to assign Security…
An organization uses Cisco ISE with TrustSec to assign Security Group Tags (SGTs) to endpoints based on their role. An endpoint initially receives an SGT for 'Employees' but after a posture check reveals missing antivirus updates, ISE changes the SGT to 'Quarantine'. Which ISE feature dynamically updates the SGT?
⚠ Common exam trap
Cisco often tests the distinction between the feature that triggers the change (posture assessment) and the protocol that enforces the change (CoA), leading candidates to mistakenly select 'Posture assessment' as the answer.
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
✓
Change of Authorization (CoA)
Change of Authorization (CoA) is the correct answer because it is the RADIUS-based mechanism (RFC 5176) that allows Cisco ISE to dynamically update an endpoint's Security Group Tag (SGT) after a posture check. When the posture assessment detects missing antivirus updates, ISE sends a CoA request to the network access device (e.g., switch or wireless LAN controller) to reauthenticate the session or push a new SGT, effectively moving the endpoint from 'Employees' to 'Quarantine' without requiring the user to manually reconnect.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Change of Authorization (CoA)
Why this is correct
CoA allows ISE to update session attributes, including SGT, without reauthentication.
- ✗
Posture assessment
Why it's wrong here
Posture assessment evaluates compliance but does not directly change SGTs; CoA does.
- ✗
Guest access
Why it's wrong here
Guest access is for temporary users, not SGT management.
- ✗
Profiling
Why it's wrong here
Profiling identifies device type, not SGT assignment changes.
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.
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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.