- A
TrustSec SGT assignment
Why wrong: TrustSec assigns SGTs but typically requires reauthentication for changes unless CoA is used.
- B
RADIUS Accounting
Why wrong: RADIUS Accounting is used for logging and does not trigger authorization changes.
- C
CoA (Change of Authorization)
Correct. CoA dynamically changes authorization attributes like VLAN or ACL.
- D
MAB
Why wrong: MAB is an authentication method, not a mechanism for dynamic authorization changes.
Question 27 of 988
350-701 Endpoint Security and Identity Practice Question
This 350-701 practice question tests your understanding of endpoint security and identity. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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.
In a Cisco ISE deployment, after a device passes posture assessment, ISE needs to dynamically change the VLAN assignment for the device. Which protocol or feature enables ISE to send a new authorization policy to the network access device without requiring the endpoint to reauthenticate?
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
✓
CoA (Change of Authorization)
Change of Authorization (CoA) allows ISE to send real-time authorization changes (e.g., VLAN change) to the NAD using RADIUS Disconnect or Change of Authorization messages, without requiring the client to reauthenticate.
Key principle: Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
TrustSec SGT assignment
Why it's wrong here
TrustSec assigns SGTs but typically requires reauthentication for changes unless CoA is used.
- ✗
RADIUS Accounting
Why it's wrong here
RADIUS Accounting is used for logging and does not trigger authorization changes.
- ✓
CoA (Change of Authorization)
- ✗
MAB
Why it's wrong here
MAB is an authentication method, not a mechanism for dynamic authorization changes.
Common exam traps
Common exam trap: authentication is not authorization
Logging in proves the user can authenticate. It does not automatically mean the user is allowed to enter privileged or configuration mode. Watch for AAA authorization, privilege level and command authorization details.
Detailed technical explanation
How to think about this question
This kind of question is testing the difference between identity and permission. A user may successfully log in to a router because authentication is working, but still fail to enter configuration mode because authorization is missing, misconfigured or mapped to a lower privilege level.
KKey Concepts to Remember
- Authentication checks who the user is.
- Authorization controls what the user is allowed to do after login.
- Privilege levels affect access to EXEC and configuration commands.
- AAA, TACACS+ and RADIUS can separate login success from command access.
TExam Day Tips
- Do not assume successful login means full administrative access.
- Look for words such as cannot enter configuration mode, privilege level, authorization or command access.
- Separate login problems from permission problems before choosing the answer.
Key takeaway
Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
Real-world example
How this comes up in practice
A help-desk technician troubleshoots why a newly connected PC cannot reach shared printers on the same floor. The cable is good, the switch port is active, but the PC is in VLAN 20 and the printers are in VLAN 10. The uplink trunk only allows VLAN 10. A trunk being up does not mean every VLAN crosses it.
Visual reference
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.
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related 350-701 questions on access control and AAA configuration.
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Endpoint Security and Identity — study guide chapter
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Endpoint Security and Identity practice questions
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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 — Authentication checks who the user is..
What is the correct answer to this question?
The correct answer is: CoA (Change of Authorization) — Change of Authorization (CoA) allows ISE to send real-time authorization changes (e.g., VLAN change) to the NAD using RADIUS Disconnect or Change of Authorization messages, without requiring the client to reauthenticate.
What should I do if I get this 350-701 question wrong?
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related 350-701 questions on access control and AAA configuration.
What is the key concept behind this question?
Authentication checks who the user is.
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Last reviewed: Jul 4, 2026
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