- A
SGT classification on the switch
Why wrong: SGT classification is the result, not a component; it is done after receiving the SGT.
- B
802.1X authentication
802.1X is typically used to authenticate the user before SGT assignment.
- C
RADIUS communication between ISE and switch
ISE uses RADIUS to send SGT information to the switch.
- D
Change of Authorization (CoA)
CoA allows ISE to dynamically change the SGT after authentication.
- E
VLAN assignment
Why wrong: VLAN is traditional but not required for TrustSec; SGT is used instead.
Question 610 of 988
350-701 Endpoint Security and Identity Practice Question
This 350-701 practice question tests your understanding of endpoint security and identity. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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.
A network engineer is configuring Cisco TrustSec on a switch to enforce segmentation. Which THREE components are required for TrustSec to assign a Security Group Tag (SGT) to a user after successful authentication via ISE?
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
✓
802.1X authentication
B is correct because 802.1X authentication is the foundational mechanism that initiates the identity-based access control flow. When a user connects to the switch port, 802.1X (using EAP over LAN) authenticates the user against ISE, which then triggers the assignment of a Security Group Tag (SGT) via RADIUS attributes. Without 802.1X, the switch has no user identity to classify, and TrustSec cannot enforce segmentation at the user level.
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.
- ✗
SGT classification on the switch
Why it's wrong here
SGT classification is the result, not a component; it is done after receiving the SGT.
- ✓
802.1X authentication
Why this is correct
802.1X is typically used to authenticate the user before SGT assignment.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
RADIUS communication between ISE and switch
Why this is correct
ISE uses RADIUS to send SGT information to the switch.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Change of Authorization (CoA)
Why this is correct
CoA allows ISE to dynamically change the SGT after authentication.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
VLAN assignment
Why it's wrong here
VLAN is traditional but not required for TrustSec; SGT is used instead.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the misconception that SGT classification on the switch is a prerequisite for SGT assignment, when in fact classification is the downstream action that applies the tag after ISE has assigned it via RADIUS and CoA.
Detailed technical explanation
How to think about this question
Under the hood, the SGT is delivered from ISE to the switch via the RADIUS Access-Accept packet using the Cisco-AV-Pair attribute (e.g., 'cts:security-group-tag=value'). The Change of Authorization (CoA) is critical for dynamic SGT updates without requiring the user to re-authenticate, as it allows ISE to push a new SGT to the switch in real time using RFC 3576. In a real-world scenario, if a user moves from a 'guest' to 'employee' role, CoA enables the switch to update the SGT on the fly, maintaining continuous segmentation.
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 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.
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: 802.1X authentication — B is correct because 802.1X authentication is the foundational mechanism that initiates the identity-based access control flow. When a user connects to the switch port, 802.1X (using EAP over LAN) authenticates the user against ISE, which then triggers the assignment of a Security Group Tag (SGT) via RADIUS attributes. Without 802.1X, the switch has no user identity to classify, and TrustSec cannot enforce segmentation at the user level.
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
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.
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