JNCIS-ENT Tunnels Practice Question
Which TWO Junos configuration hierarchies are involved when setting up a functional GRE tunnel with an IP address? (Choose two)
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
✓
edit chassis
Interfaces hierarchy configures both the gr- tunnel unit parameters and the physical/transport routing.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
edit chassis
Why this is correct
Chassis configuration is required to enable tunnel services on supported FPCs/PICs.
- ✗
edit system services tftp
Why it's wrong here
TFTP has no relationship with GRE tunnel configuration.
- ✓
edit interfaces gr-0/0/0 unit 0
Why this is correct
The interface unit hierarchy is where tunnel source, destination, and family inet addresses are configured.
- ✗
edit firewall
Why it's wrong here
Firewall configuration is optional.
- ✗
edit protocols bgp
Why it's wrong here
BGP is optional and not part of basic tunnel setup.
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.