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Spanning TreeeasyMultiple ChoiceObjective-mapped

JNCIS-ENT Spanning Tree Practice Question

Which command is used to display comprehensive spanning tree status, including port roles, states, and priorities across all interfaces on an EX Series switch?

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 spanning-tree interface

The 'show spanning-tree interface' command provides detailed status, roles, and states for all interfaces participating in spanning tree.

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 spanning-tree interface

    Why this is correct

    This command displays detailed per-interface spanning tree status and role assignments.

  • show protocols rstp status

    Why it's wrong here

    Not a valid Junos operational command.

  • show spanning-tree summary

    Why it's wrong here

    Summary shows overall counts and mode, but not per-interface roles in detail.

  • show bridge spanning-tree

    Why it's wrong here

    Incorrect operational command path.

Visual reference

SW1 Root Bridge SW2 SW3 BLK DP DP RP RP STP blocks one link to prevent loops DP = Designated Port RP = Root Port BLK = Blocked

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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 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.