JN0-106 Routing Fundamentals Practice Question
Which two statements about static routes in Junos OS are correct?
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
✓
Static routes have a default preference of 5.
Static routes have a default preference of 5 in Junos OS. Option C is correct: when a static route uses an interface as the next-hop (e.g., ge-0/0/0), the router uses ARP to resolve the MAC address of the next-hop device. Option D is correct: a static route with a next-hop of 0.0.0.0 is a discard route that silently drops packets. Option A is incorrect: a static route with a next-hop of 127.0.0.1 creates a reject route (sends ICMP unreachable), not an unreachable route. Option E is incorrect: static routes cannot have a preference value of 0 because preference 0 is reserved for directly connected routes.
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 static route with a next-hop of 127.0.0.1 is an unreachable route.
Why it's wrong here
A static route with a next-hop of 127.0.0.1 creates a reject route that sends ICMP unreachable messages, not an unreachable route.
- ✓
Static routes have a default preference of 5.
Why this is correct
Correct. Static routes in Junos OS have a default preference of 5.
- ✓
A static route configured with a next-hop of an interface name (e.g., ge-0/0/0) uses Address Resolution Protocol (ARP) to resolve the next-hop MAC address.
Why this is correct
Correct. When a static route uses an interface name as the next-hop, ARP is used to resolve the MAC address.
- ✓
A static route with a next-hop of 0.0.0.0 is a discard route.
Why this is correct
Correct. A static route configured with a next-hop of 0.0.0.0 is a discard route that silently drops packets.
- ✗
Static routes can have a preference value of 0.
Why it's wrong here
Incorrect. Preference 0 is reserved for directly connected routes; static routes cannot use it.
Visual reference
Quick reference
Access Control Model Comparison
| Model | Acronym | Who Controls Access? | Best For |
|---|---|---|---|
| Discretionary Access Control | DAC | Resource owner | Small teams, file shares |
| Mandatory Access Control | MAC | System / security labels | Classified govt / military |
| Role-Based Access Control | RBAC | Administrator (via roles) | Enterprise environments |
| Attribute-Based Access Control | ABAC | Policy engine (user + resource attributes) | Fine-grained, dynamic policies |
| Rule-Based Access Control | RuBAC | System rules / ACLs | Firewall rules, network ACLs |
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This JN0-106 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 JN0-106 exam.