JNCIS-ENT OSPF Practice Question
Which TWO actions occur during OSPF link-state database flooding on a Junos routing device? (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
✓
The router updates its link-state database (LSDB) with the received LSA and acknowledges it.
When an LSA update is received, the router adds or updates it in its LSDB, schedules an SPF calculation (or runs incremental SPF), and floods the LSA out all other participating OSPF interfaces.
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 router converts the link-state database into BGP path attributes.
Why it's wrong here
Incorrect. OSPF and BGP operate independently unless explicit redistribution is configured.
- ✗
The router immediately deletes all static routes from the routing table.
Why it's wrong here
Incorrect. Static routes are independent of OSPF database flooding.
- ✗
The router resets all active neighbor adjacencies across the entire device.
Why it's wrong here
Incorrect. Flooding updates do not reset adjacencies.
- ✓
The router updates its link-state database (LSDB) with the received LSA and acknowledges it.
Why this is correct
Correct. LSDBs are updated and acknowledged via LSAcks.
- ✓
The router floods the LSA out all other OSPF-enabled interfaces belonging to that area.
Why this is correct
Correct. Reliable flooding propagates the LSA across the area.
Visual reference
About these practice questions
Courseiva writes every JNCIS-ENT question from scratch — 506 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.