SDSI Secure Infrastructure Design Practice Question
When designing a network segmentation strategy using Cisco TrustSec, what is an SGT tag used for?
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
✓
To enforce security policy based on identity
SGTs are used as the source of truth in security group ACLs (SGACLs) to permit or deny traffic based on the tag value.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
To map IP addresses to MAC addresses
Why it's wrong here
That is the function of the ARP table.
- ✗
To identify the VLAN ID
Why it's wrong here
SGTs are independent of VLANs.
- ✗
To configure port security
Why it's wrong here
Port security is locally managed on the switch, not tag-based.
- ✓
To enforce security policy based on identity
Why this is correct
SGTs allow for group-based policy enforcement across the network.
Visual reference
About these practice questions
This SDSI question is part of Courseiva's 298-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official Cisco exam blueprint
This SDSI 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 SDSI exam.