JNCIS-ENT BGP Practice Question
A network engineer configures BGP confederations to scale an enterprise network. Which BGP path attribute is stripped or modified when an update leaves a sub-AS within the confederation and enters another sub-AS?
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
✓
CONFED_SEQUENCE
CONFED_SEQUENCE and CONFED_SET attributes are used within a confederation and are stripped when the update leaves the confederation boundary to a normal eBGP peer.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
AS_PATH
Why it's wrong here
AS_PATH is modified, but confederation specific path segments are stripped or modified specifically.
- ✓
CONFED_SEQUENCE
Why this is correct
CONFED_path segments are removed or converted when crossing the boundary out of the confederation.
- ✗
LOCAL_PREF
Why it's wrong here
LOCAL_PREF is stripped when crossing eBGP boundaries, but confederations preserve it across sub-AS boundaries.
- ✗
MED
Why it's wrong here
MED is an optional non-transitive attribute that may be stripped across AS boundaries depending on configuration.
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.