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JNCIS-ENT IS IS Practice Question

You need to redistribute OSPF routes into IS-IS. Where do you configure this?

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

Under the 'protocols isis export' hierarchy.

Redistribution is configured under the 'policy-options' and applied under 'protocols isis export'.

Answer analysis

Option-by-option breakdown

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

  • Under the 'protocols isis export' hierarchy.

    Why this is correct

    This is where the export policy is applied.

  • Under the OSPF configuration only.

    Why it's wrong here

    You must apply the policy under IS-IS as well.

  • It is not possible to redistribute OSPF into IS-IS.

    Why it's wrong here

    Redistribution is a standard feature.

  • Under the interface level.

    Why it's wrong here

    Redistribution is a routing protocol setting, not an interface setting.

Visual reference

R1 R2 R3 R4 10 100 10 100 OSPF picks R1→R2→R4 (cost 20) over R1→R3→R4 (cost 200)

About these practice questions

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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.