Courseiva
Layer 2 Switching And VLANshardMultiple ChoiceObjective-mapped

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

Switch VLAN 10 Sales (192.168.10.0/24) PC-A PC-B VLAN 20 HR (192.168.20.0/24) PC-C PC-D Router VLANs isolate traffic — inter-VLAN routing requires a Layer 3 device

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 →

How Courseiva writes practice questions · Editorial policy

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.