JNCIS-ENT OSPF Practice Question
An administrator is troubleshooting an OSPF adjacency issue on an interface connecting two Juniper vMX routers. Both routers are stuck in the 2-Way state on a broadcast segment. Which configuration parameter must match on both routers for the adjacency to progress beyond 2-Way?
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 hello-interval and dead-interval timers must match
On broadcast networks, OSPF routers elected as DR and BDR form adjacencies with all routers, while DROther routers form adjacencies only with the DR and BDR. However, basic OSPF interface parameters like Hello and Dead intervals, area ID, and authentication must match for any adjacency to form. Specifically, the Hello and Dead timers must match across the link.
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 interface metric must be identical
Why it's wrong here
OSPF interface metrics can be asymmetric and do not prevent neighbor state transitions.
- ✗
The interface priority must be set to zero on both nodes
Why it's wrong here
Priority only affects DR/BDR election and does not prevent 2-Way to Full transitions if misconfigured, provided they are not both zero (which causes DROther-DROther states to remain at 2-Way).
- ✗
The router-id must be identical on both routers
Why it's wrong here
Router IDs must be unique within an OSPF domain, not identical.
- ✓
The hello-interval and dead-interval timers must match
Why this is correct
OSPF requires hello and dead intervals to match on an interface for neighbors to establish an adjacency.
Visual reference
About these practice questions
This JNCIS-ENT question is part of Courseiva's 506-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. 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 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.