JNCIP-ENT Interior Gateway Protocols Practice Question
You need to adjust the OSPF cost on a specific interface to manipulate path selection. Which command sets the OSPF cost on an interface?
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
✓
set protocols ospf area 0.0.0.0 interface xe-0/0/0.0 cost 50
OSPF interface cost is explicitly configured under the interface hierarchy within protocols ospf using the 'cost' statement.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
set routing-options interface xe-0/0/0.0 ospf-cost 50
Why it's wrong here
This is an invalid configuration path.
- ✓
set protocols ospf area 0.0.0.0 interface xe-0/0/0.0 cost 50
Why this is correct
The 'cost' command explicitly sets the OSPF cost for that interface.
- ✗
set interfaces xe-0/0/0.0 ospf-cost 50
Why it's wrong here
OSPF cost must be set under protocols ospf.
- ✗
set protocols ospf area 0.0.0.0 interface xe-0/0/0.0 metric 50
Why it's wrong here
The keyword is 'cost', not 'metric', for interface OSPF cost settings.
Visual reference
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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 JNCIP-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 JNCIP-ENT exam.