JNCIS-ENT Protocol Independent Routing Practice Question
When configuring Filter-Based Forwarding (FBF), which THREE components are absolutely mandatory for successful operation? (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
✓
A firewall filter with 'then routing-instance <name>' action.
FBF requires a forwarding instance, a firewall filter with a routing-instance action, and the application of that filter to an interface input.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
A firewall filter with 'then routing-instance <name>' action.
Why this is correct
The filter action dictates where intercepted traffic is sent.
- ✓
A routing instance of type 'forwarding' or 'virtual-router'.
Why this is correct
The target routing instance must be declared.
- ✓
Application of the firewall filter as input on the ingress interface.
Why this is correct
The filter must be applied to the incoming interface to intercept traffic.
- ✗
BGP multipath enabled across all core interfaces.
Why it's wrong here
BGP multipath is not required for FBF.
- ✗
An RSVP-TE LSP tunnel configured between the routers.
Why it's wrong here
RSVP is optional and unrelated to basic FBF.
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.