JNCIP-ENT Interior Gateway Protocols Practice Question
An engineer needs to prevent Type-5 LSAs from entering an OSPF stub area while still allowing external routes to be reached via a default route. Which configuration statement under [edit protocols ospf area] achieves this on a Juniper device?
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
✓
set stub
Configuring 'stub' without the 'no-summaries' keyword makes the area a standard stub area, which blocks Type-5 LSAs and injects a default route (Type-3 summary default).
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
set totally-stubby
Why it's wrong here
The correct Junos statement for a totally stubby area is 'set stub no-summaries'.
- ✗
set stub default-metric 10
Why it's wrong here
This modifies the cost of the injected default route in a stub area, but the area must first be declared as a stub.
- ✓
set stub
Why this is correct
The 'stub' command under the area hierarchy defines the area as a stub, blocking external LSAs and injecting a default route.
- ✗
set nssa default-lsa type-7
Why it's wrong here
This applies to NSSA areas, not standard stub areas.
Visual reference
About these practice questions
One of 332 original JNCIP-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 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.