JNCIS-ENT BGP Practice Question
When evaluating the BGP path selection algorithm on a Junos device, which THREE attributes are evaluated BEFORE the router considers the IGP metric to the BGP next hop? (Choose three)
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
✓
Multi-Exit Discriminator (MED)
The path selection order in Junos is: 1. Local Preference, 2. AS Path length, 3. Origin type, 4. MED, 5. iBGP over eBGP, 6. IGP metric to next hop. Therefore, local preference, AS path length, and MED are evaluated before the IGP metric.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
IGP metric to next hop
Why it's wrong here
IGP metric is evaluated later in the algorithm.
- ✗
Router ID
Why it's wrong here
Router ID is evaluated much later in the tie-breaking steps.
- ✓
Multi-Exit Discriminator (MED)
Why this is correct
MED is evaluated after origin type and before iBGP/eBGP preference.
- ✓
AS path length
Why this is correct
AS path length is evaluated second.
- ✓
Local Preference
Why this is correct
Local Preference is evaluated first in BGP path selection.
About these practice questions
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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.