JNCIS-ENT Spanning Tree Practice Question
You suspect that a network loop has formed due to a misconfigured RSTP topology on your EX Series switches. Which command shows real-time topology change notifications and counts on the 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 statistics
The command 'show spanning-tree statistics' displays counters related to topology changes, BPDU transmission, and reception per interface.
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 bridge mac-table
Why it's wrong here
Displays MAC address table entries, not spanning tree topology changes.
- ✗
show spanning-tree interface detail
Why it's wrong here
Provides state and role information, but statistics counters are best viewed via statistics.
- ✗
show rstp neighbor
Why it's wrong here
Not a valid Junos operational command.
- ✓
show spanning-tree statistics
Why this is correct
This command provides counts for topology changes and BPDU packets processed.
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.