JNCIS-ENT Spanning Tree Practice Question
Which command allows an operator to view the designated root bridge identifier and port roles for all active VLANs under RSTP?
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 bridge
The command 'show spanning-tree interface' or 'show spanning-tree bridge' displays root bridge information. Specifically, 'show spanning-tree bridge' displays the root bridge identifier.
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 bridge
Why this is correct
This command shows the root bridge ID, bridge priority, and designated root parameters.
- ✗
show spanning-tree statistics
Why it's wrong here
This command displays packet statistics and BPDU counters.
- ✗
show spanning-treemstp region
Why it's wrong here
Used for MSTP regions, not basic RSTP global parameters.
- ✗
show spanning-tree interface detail
Why it's wrong here
Provides per-interface parameters rather than summary bridge/root parameters.
Visual reference
About these practice questions
One of 519 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.