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Spanning TreeeasyMultiple ChoiceObjective-mapped

JNCIS-ENT Spanning Tree Practice Question

What is the default bridge priority value assigned to Juniper EX Series switches when RSTP is enabled?

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

32768

The default bridge priority for JUNOS devices running STP, RSTP, or MSTP is 32768.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • 61440

    Why it's wrong here

    61440 is near the high end of the priority scale and is not the default setting.

  • 0

    Why it's wrong here

    A priority of 0 must be explicitly configured or achieved via lower increments like 4096.

  • 32768

    Why this is correct

    32768 is the IEEE default bridge priority value used across JUNOS routing and switching platforms.

  • 4096

    Why it's wrong here

    4096 is a common step size for manual priority adjustments, not the default.

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.