JNCIS-ENT Protocol Independent Routing Practice Question
You are configuring an aggregate route and want to ensure that a discard next-hop is automatically applied when there are no contributing routes, preventing routing loops. Which configuration statement should you use under routing-options?
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 routing-options aggregate route 10.0.0.0/16 discard
To secure an aggregate route and silently drop traffic when no more-specific routes exist, the discard option is appended to the aggregate route configuration.
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 static route 10.0.0.0/16 drop
Why it's wrong here
Drop is not a valid parameter under static routes in this format.
- ✗
set routing-options aggregate route 10.0.0.0/16 passive
Why it's wrong here
Passive is not a valid option for aggregate routes in Junos.
- ✓
set routing-options aggregate route 10.0.0.0/16 discard
Why this is correct
The discard keyword instructs Junos to silently drop packets matching the aggregate route when no contributing components are active.
- ✗
set routing-options aggregate route 10.0.0.0/16 reject
Why it's wrong here
Reject sends an ICMP unreachable message, whereas discard drops packets silently; discard is typically preferred for aggregate safety.
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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.