JNCIS-ENT IS IS Practice Question
In a multi-access network, which PDU is responsible for the DIS election?
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
✓
IIH PDU
The IIH (IS-IS Hello) PDU contains the priority field used for DIS election on broadcast segments.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
CSNP
Why it's wrong here
CSNPs are used for database synchronization.
- ✗
LSP
Why it's wrong here
LSPs are for Link State information, not election.
- ✓
IIH PDU
Why this is correct
IIH PDUs carry the priority information for DIS election.
- ✗
PSNP
Why it's wrong here
PSNPs are for partial sequence number acknowledgment.
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.