- A
The OSPF route has a lower metric than the static route.
Why wrong: Metric is only compared within the same protocol, not between static and OSPF.
- B
The static route's next-hop is not directly connected.
Why wrong: Next-hop reachability is sufficient via any protocol; direct connection is not required.
- C
The static route is configured with a qualified-next-hop that fails.
A qualified-next-hop condition can prevent the static route from becoming active.
- D
The static route has a higher preference than OSPF.
Why wrong: Static default preference is 5, which is lower than OSPF's 10, so static should be preferred.
Question 435 of 514
JNCIA-JUNOS Routing Fundamentals Practice Question
This JNCIA-JUNOS practice question tests your understanding of routing fundamentals. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A static route with a next-hop of 10.0.0.1 is configured, but the route is not appearing in the active routing table. The output of `show route 10.0.0.1` shows that 10.0.0.1 is reachable via an OSPF route with preference 10. What is the most likely reason the static route is not active?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"most likely"Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability 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
✓
The static route is configured with a qualified-next-hop that fails.
Option C is correct because a static route with a qualified-next-hop allows you to specify an alternative next-hop that is used only if the primary next-hop fails. If the qualified-next-hop is unreachable or fails, the static route may not become active even if the primary next-hop (10.0.0.1) is reachable via OSPF. In Junos, a static route is installed only if its next-hop is reachable; if the qualified-next-hop is configured and fails, the route may be suppressed.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The OSPF route has a lower metric than the static route.
- ✗
The static route's next-hop is not directly connected.
Why it's wrong here
Next-hop reachability is sufficient via any protocol; direct connection is not required.
- ✓
The static route is configured with a qualified-next-hop that fails.
Why this is correct
A qualified-next-hop condition can prevent the static route from becoming active.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
The static route has a higher preference than OSPF.
Why it's wrong here
Static default preference is 5, which is lower than OSPF's 10, so static should be preferred.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates assume a static route will always be installed if its next-hop is reachable, but Junos's qualified-next-hop behavior can suppress the route if the qualified next-hop fails, even when the primary next-hop is reachable via another protocol like OSPF.
Detailed technical explanation
How to think about this question
In Junos, a static route is installed only if its next-hop is reachable via the routing table. The `qualified-next-hop` feature allows you to assign a different preference or metric to a specific next-hop, and if that next-hop fails, the route may be withdrawn entirely even if the primary next-hop is reachable. This is different from Cisco IOS, where a static route with a recursive next-hop remains in the routing table as long as the recursive lookup succeeds, regardless of any backup next-hop configuration.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A network engineer at a university connects two campus buildings via a fibre link. Both routers run OSPF, but no adjacency forms — even though both routers can ping each other. The engineer finds one router is in area 0 and the other in area 1. OSPF adjacency requires matching area numbers, hello/dead timers, and network type. IP reachability alone is not enough.
Visual reference
Quick reference
Routing Protocol Comparison
| Protocol | Metric | Max Hops | Algorithm | Type |
|---|---|---|---|---|
| RIP v2 | Hop count | 15 | Bellman-Ford | Distance vector |
| OSPF | Cost (bandwidth) | Unlimited | Dijkstra (SPF) | Link state |
| EIGRP | Composite metric | Unlimited | DUAL | Hybrid |
| IS-IS | Cost | Unlimited | Dijkstra | Link state |
| BGP | Policy / attributes | Unlimited | Path vector | Path vector |
RIP's 15-hop limit makes it unsuitable for large networks. OSPF and EIGRP dominate modern enterprise deployments.
What to study next
Got this wrong? Here's your next step.
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FAQ
Questions learners often ask
What does this JNCIA-JUNOS question test?
Routing Fundamentals — This question tests Routing Fundamentals — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The static route is configured with a qualified-next-hop that fails. — Option C is correct because a static route with a qualified-next-hop allows you to specify an alternative next-hop that is used only if the primary next-hop fails. If the qualified-next-hop is unreachable or fails, the static route may not become active even if the primary next-hop (10.0.0.1) is reachable via OSPF. In Junos, a static route is installed only if its next-hop is reachable; if the qualified-next-hop is configured and fails, the route may be suppressed.
What should I do if I get this JNCIA-JUNOS question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jul 4, 2026
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