JNCIS-ENT Layer 2 Switching And VLANs Practice Question
An EX Series switch is configured with a private VLAN primary VLAN 10 and secondary isolated VLAN 20. An administrator wants to verify the active private VLAN port associations and mappings. Which operational command displays this information?
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
✓
show vlans extensive
Private VLAN operational state and port mappings are verified using 'show ethernet-switching vlan' or specialized PVLAN operational commands.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
show private-vlan mapping
Why it's wrong here
Private-vlan mapping is not a top-level operational command in Junos.
- ✗
show ethernet-switching vlan private-vlan
Why it's wrong here
Incorrect command syntax.
- ✓
show vlans extensive
Why this is correct
Correct. Detailed and extensive VLAN output displays private VLAN primary and secondary relationships and member ports.
- ✗
show bridge-options private-vlan
Why it's wrong here
Bridge options do not have a private-vlan operational display command.
Visual reference
About these practice questions
One of 506 original JNCIS-ENT practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. 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 Juniper Networks exam blueprint
This JNCIS-ENT practice question is part of Courseiva's free Juniper Networks 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 JNCIS-ENT exam.