- A
SGACLs define policies based on source and destination security group tags.
Correct; SGACLs use SGTs to determine access rights.
- B
SGACLs are typically downloaded from the Cisco ISE policy server to network devices.
Correct; ISE pushes SGACL definitions to switches and routers.
- C
SGACLs are applied directly to switch ports using the ip access-group command.
Why wrong: Incorrect; SGACLs are not interface ACLs; they are applied to SGT pairs via the Cisco TrustSec policy.
- D
SGACLs can be used to permit or deny traffic between different security groups.
Correct; SGACLs enforce permit or deny actions between SGTs.
- E
SGACLs can rewrite the security group tag in the packet header.
Why wrong: Incorrect; SGACLs do not modify packets; they only enforce policy. SGT rewriting is done by other mechanisms.
350-401 802.1X 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 security group access control lists (SGACLs) are true? (Choose three.)
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
SGACLs define policies based on source and destination security group tags.
SGACLs are applied based on source and destination SGTs, they are downloaded from the Cisco ISE, and they can be used to permit or deny traffic. Option A is correct because SGACLs are policy rules based on SGTs. Option B is correct because ISE distributes SGACLs to network devices. Option D is correct because SGACLs enforce permit/deny decisions. Option C is incorrect because SGACLs are not applied to interfaces like traditional ACLs; they are applied to SGT pairs. Option E is incorrect because SGACLs do not modify packets; they just enforce policy.
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.
- ✓
SGACLs define policies based on source and destination security group tags.
Why this is correct
Correct; SGACLs use SGTs to determine access rights.
Related concept
Static NAT maps one inside address to one outside address.
- ✓
SGACLs are typically downloaded from the Cisco ISE policy server to network devices.
Why this is correct
Correct; ISE pushes SGACL definitions to switches and routers.
Related concept
Static NAT maps one inside address to one outside address.
- ✗
SGACLs are applied directly to switch ports using the ip access-group command.
Why it's wrong here
Incorrect; SGACLs are not interface ACLs; they are applied to SGT pairs via the Cisco TrustSec policy.
- ✓
SGACLs can be used to permit or deny traffic between different security groups.
Why this is correct
Correct; SGACLs enforce permit or deny actions between SGTs.
Related concept
Static NAT maps one inside address to one outside address.
- ✗
SGACLs can rewrite the security group tag in the packet header.
Why it's wrong here
Incorrect; SGACLs do not modify packets; they only enforce policy. SGT rewriting is done by other mechanisms.
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.
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802.1X and TrustSec — study guide chapter
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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: SGACLs define policies based on source and destination security group tags. — SGACLs are applied based on source and destination SGTs, they are downloaded from the Cisco ISE, and they can be used to permit or deny traffic. Option A is correct because SGACLs are policy rules based on SGTs. Option B is correct because ISE distributes SGACLs to network devices. Option D is correct because SGACLs enforce permit/deny decisions. Option C is incorrect because SGACLs are not applied to interfaces like traditional ACLs; they are applied to SGT pairs. Option E is incorrect because SGACLs do not modify packets; they just enforce policy.
What should I do if I get this 350-401 question wrong?
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.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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Last reviewed: Jun 18, 2026
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