JNCIS-ENT OSPF Practice Question
Which OSPF packet type is responsible for discovering neighbors and maintaining adjacencies on a Junos 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
✓
Hello (Type 1)
OSPF Hello packets (Packet Type 1) are sent periodically to discover neighbors, establish bidirectional communication, and maintain adjacencies.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Link-State Update (Type 4)
Why it's wrong here
Incorrect. LSU packets carry the actual LSA advertisements.
- ✓
Hello (Type 1)
Why this is correct
Correct. Hello packets discover neighbors and maintain adjacencies.
- ✗
Link-State Request (Type 3)
Why it's wrong here
Incorrect. LSR packets request specific LSAs from a neighbor after comparing DBDs.
- ✗
Database Description (Type 2)
Why it's wrong here
Incorrect. DBD packets contain summary information about the link-state database during synchronization.
Visual reference
About these practice questions
Courseiva writes every JNCIS-ENT question from scratch — 519 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or 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.