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JNCIS-ENT Spanning Tree Practice Question

Which TWO actions occur when you configure an interface as an edge port in RSTP? (Choose two.)

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

The port does not generate topology change notifications when its link goes up or down.

Edge ports transition immediately to the forwarding state and do not trigger topology changes when their link status changes.

Answer analysis

Option-by-option breakdown

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

  • The port does not generate topology change notifications when its link goes up or down.

    Why this is correct

    Edge port state changes do not trigger TCNs.

  • The port automatically becomes a backup port.

    Why it's wrong here

    Edge ports function as designated ports for end devices, not backup ports.

  • The port transitions immediately to the forwarding state.

    Why this is correct

    Edge ports bypass listening and learning states.

  • The port's bridge priority is automatically set to 0.

    Why it's wrong here

    Edge configuration has no effect on bridge priorities.

  • The port stops transmitting BPDUs entirely under all circumstances.

    Why it's wrong here

    Edge ports still transmit BPDUs unless bpdu-guard or explicit disabling is applied.

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.