- A
Change of Authorization (CoA)
CoA allows ISE to update session attributes, including SGT, without reauthentication.
- B
Posture assessment
Why wrong: Posture assessment evaluates compliance but does not directly change SGTs; CoA does.
- C
Guest access
Why wrong: Guest access is for temporary users, not SGT management.
- D
Profiling
Why wrong: Profiling identifies device type, not SGT assignment changes.
Question 818 of 988
350-701 Endpoint Security and Identity Practice Question
This 350-701 practice question tests your understanding of endpoint security and identity. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
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?
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.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
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.
Common exam traps
Common exam trap: answer the scenario, not the keyword
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.
Detailed technical explanation
How to think about this question
Under the hood, CoA uses UDP port 3799 and can be sent as a Disconnect-Request or a CoA-Request with specific RADIUS attributes (e.g., Cisco-AVPair for SGT). In TrustSec environments, the SGT is often mapped to a VLAN or downloaded via SXP (SGT Exchange Protocol), and CoA ensures the enforcement point applies the new tag immediately. A real-world scenario is when a corporate laptop fails antivirus checks during a periodic re-assessment; ISE sends a CoA to the switch to change the SGT from 'Employees' to 'Quarantine', restricting access to remediation servers only.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A junior network technician can log in to a core router but cannot reach the enable prompt or configuration mode. The AAA server is authenticating the login — but the authorisation policy only grants privilege level 1, not 15. Authentication (who you are) is working; authorisation (what you can do) is not.
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.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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Endpoint Security and Identity — study guide chapter
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FAQ
Questions learners often ask
What does this 350-701 question test?
Endpoint Security and Identity — This question tests Endpoint Security and Identity — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: 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.
What should I do if I get this 350-701 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jul 4, 2026
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