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Interior Gateway ProtocolsmediumMultiple SelectObjective-mapped

JNCIP-ENT Interior Gateway Protocols Practice Question

Which TWO types of OSPF areas allow the generation of Type-7 LSAs? (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

Not-So-Stubby Area (NSSA)

Type-7 LSAs are exclusively generated within Not-So-Stubby Areas (NSSA) and NSSA totally stubby areas by ASBRs connecting external routes.

Answer analysis

Option-by-option breakdown

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

  • Standard OSPF Non-backbone Area

    Why it's wrong here

    Standard areas use Type-5 LSAs.

  • Not-So-Stubby Area (NSSA)

    Why this is correct

    NSSAs allow ASBRs to inject external routes using Type-7 LSAs.

  • Standard OSPF Backbone Area (Area 0)

    Why it's wrong here

    Backbone area uses Type-5 LSAs for external routes, not Type-7.

  • NSSA Totally Stubby Area

    Why this is correct

    NSSA totally stubby areas also support Type-7 LSAs while blocking Type-3 summaries.

  • OSPF Stub Area

    Why it's wrong here

    Stub areas block external and Type-7 LSAs entirely.

Visual reference

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

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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 JNCIP-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 JNCIP-ENT exam.