Question 1,541 of 2,015

802.1X and TrustSec →hardMultiple SelectObjective-mapped

CCNP 802.1X and TrustSec Practice Question

This 350-401 practice question tests your understanding of 802.1x and trustsec. 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.

Which three statements about Cisco TrustSec SGT propagation and enforcement are true? (Choose three.)

Question 1hardmulti select

Full question →

A
SGTs can be propagated between network devices using the SXP protocol over a TCP connection.
Correct because SXP (SGT Exchange Protocol) uses TCP (port 64999) to exchange SGT-to-IP mappings between devices that do not support inline tagging.
B
Inline tagging inserts the SGT into the Ethernet frame header between the source and destination MAC addresses.
Correct because Cisco's inline tagging method adds a 4-byte SGT tag (Cisco Meta Data) after the source MAC address in the Ethernet frame.
C
The enforcement device uses the SGT to make forwarding decisions based on the destination IP address.
Why wrong: Incorrect because SGTs are used for security policy enforcement (e.g., permit/deny), not for IP routing or forwarding decisions; routing is based on destination IP.
D
When a packet traverses a TrustSec domain, the SGT can be rewritten by intermediate devices.
Why wrong: Incorrect because the SGT is typically preserved end-to-end; intermediate devices do not rewrite the SGT unless configured to do so for specific policy reasons, but this is not a standard behavior.
E
SGTs allow the enforcement of security policies based on the identity of the source, regardless of IP address.
Correct because SGTs represent the security group of the source (e.g., based on user or device role), enabling policy that is independent of the source IP address.

Full breakdown with real-world context →

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

✓

SGTs can be propagated between network devices using the SXP protocol over a TCP connection.

SGTs can be propagated via SXP (a TCP-based protocol) or inline tagging. SXP uses a TCP connection to exchange SGT-to-IP mappings. Inline tagging inserts the SGT into the Ethernet frame. The enforcement device (e.g., a firewall or switch) uses the SGT to apply policy, not to rewrite the tag. SGTs are not used for routing decisions.

Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

✓
SGTs can be propagated between network devices using the SXP protocol over a TCP connection.
Why this is correct
Correct because SXP (SGT Exchange Protocol) uses TCP (port 64999) to exchange SGT-to-IP mappings between devices that do not support inline tagging.
Related concept
Static NAT maps one inside address to one outside address.
✓
Inline tagging inserts the SGT into the Ethernet frame header between the source and destination MAC addresses.
Why this is correct
Correct because Cisco's inline tagging method adds a 4-byte SGT tag (Cisco Meta Data) after the source MAC address in the Ethernet frame.
Related concept
Static NAT maps one inside address to one outside address.
✗
The enforcement device uses the SGT to make forwarding decisions based on the destination IP address.
Why it's wrong here
Incorrect because SGTs are used for security policy enforcement (e.g., permit/deny), not for IP routing or forwarding decisions; routing is based on destination IP.
✗
When a packet traverses a TrustSec domain, the SGT can be rewritten by intermediate devices.
Why it's wrong here
Incorrect because the SGT is typically preserved end-to-end; intermediate devices do not rewrite the SGT unless configured to do so for specific policy reasons, but this is not a standard behavior.
✓
SGTs allow the enforcement of security policies based on the identity of the source, regardless of IP address.
Why this is correct
Correct because SGTs represent the security group of the source (e.g., based on user or device role), enabling policy that is independent of the source IP address.
Related concept
Static NAT maps one inside address to one outside address.

Common exam traps

Common exam trap: NAT rules depend on direction and matching traffic

NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.

Detailed technical explanation

How to think about this question

NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.

KKey Concepts to Remember

Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.

TExam Day Tips

Identify inside and outside interfaces first.
Check whether the scenario needs static NAT, dynamic NAT or PAT.
Do not confuse NAT matching ACLs with normal packet-filtering intent.

Key takeaway

NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.

Real-world example

How this comes up in practice

A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.

What to study next

Got this wrong? Here's your next step.

Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related 350-401 NAT questions on configuration and troubleshooting.

Related 350-401 practice-question pages

Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.

Architecture practice questions

Practise 350-401 questions linked to Architecture.

Enterprise Network Design practice questions

Practise 350-401 questions linked to Enterprise Network Design.

SD-Access Architecture practice questions

Practise 350-401 questions linked to SD-Access Architecture.

SD-WAN Architecture practice questions

Practise 350-401 questions linked to SD-WAN Architecture.

QoS Architecture practice questions

Practise 350-401 questions linked to QoS Architecture.

Virtualization practice questions

Practise 350-401 questions linked to Virtualization.

Network Function Virtualization practice questions

Practise 350-401 questions linked to Network Function Virtualization.

Virtual Machines and Hypervisors practice questions

Practise 350-401 questions linked to Virtual Machines and Hypervisors.

VRF and Path Isolation practice questions

Practise 350-401 questions linked to VRF and Path Isolation.

Infrastructure practice questions

Practise 350-401 questions linked to Infrastructure.

OSPF practice questions

Practise 350-401 questions linked to OSPF.

BGP practice questions

Practise 350-401 questions linked to BGP.

Practice this exam

Start a free 350-401 practice session

Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.

10 questions 20 questions 30 questions 50 questions Timed 30

350-401 practice-test guide →Study guide →Browse all practice tests

FAQ

Questions learners often ask

What does this 350-401 question test?

802.1X and TrustSec — This question tests 802.1X and TrustSec — Static NAT maps one inside address to one outside address..

What is the correct answer to this question?

The correct answer is: SGTs can be propagated between network devices using the SXP protocol over a TCP connection. — SGTs can be propagated via SXP (a TCP-based protocol) or inline tagging. SXP uses a TCP connection to exchange SGT-to-IP mappings. Inline tagging inserts the SGT into the Ethernet frame. The enforcement device (e.g., a firewall or switch) uses the SGT to apply policy, not to rewrite the tag. SGTs are not used for routing decisions.

What should I do if I get this 350-401 question wrong?

What is the key concept behind this question?

Static NAT maps one inside address to one outside address.

About these practice questions

Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →

How Courseiva writes practice questions · Editorial policy

Last reviewed: Jun 18, 2026

Question Discussion

Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.

Loading comments…

This 350-401 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 350-401 exam.