JNCIS-ENT BGP Practice Question
What is the primary function of the BGP OPEN message?
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
✓
To establish a peering session and negotiate capabilities such as ASNs and timers.
The OPEN message is the first message sent after a TCP connection is established, used to negotiate BGP parameters such as ASN, hold time, and router ID.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
To advertise reachability and path attributes for network prefixes.
Why it's wrong here
This describes the UPDATE message.
- ✗
To maintain the connection state and verify liveliness at regular intervals.
Why it's wrong here
This describes the KEEPALIVE message.
- ✗
To signal fatal errors and immediately terminate the BGP session.
Why it's wrong here
This describes the NOTIFICATION message.
- ✓
To establish a peering session and negotiate capabilities such as ASNs and timers.
Why this is correct
The OPEN message negotiates session parameters between peers.
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.