ISC Infrastructure And System Security Practice Question
In a VMware NSX-T environment, you need to implement a 'Distributed Firewall' (DFW) policy that separates traffic based on the application tier regardless of which ESXi host the VM is running on. What is the primary object used to achieve this logical grouping?
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
✓
NSX Groups
NSX-T uses 'Groups' based on dynamic criteria (tags, VM names, etc.) to apply DFW rules consistently across the infrastructure.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
VLAN ID
Why it's wrong here
VLANs are tied to physical network segments and do not provide the abstraction needed for DFW policies.
- ✓
NSX Groups
Why this is correct
NSX Groups allow for dynamic membership based on tags or attributes, enabling policy application regardless of host location.
- ✗
Logical Switch Port ID
Why it's wrong here
While possible, referencing individual ports is not scalable or logical for application-tier grouping.
- ✗
Physical NIC MAC Address
Why it's wrong here
MAC addresses are tied to hardware and do not facilitate application-level abstraction in NSX-T.
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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 (ISC)² exam blueprint
This ISC practice question is part of Courseiva's free (ISC)² 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 ISC exam.