- A
The static route has a preference of 5.
Why wrong: Preference 5 is normal and would not prevent installation.
- B
The route is hidden due to an import policy.
Why wrong: Import policies apply to dynamic routes, not static routes.
- C
The static route is configured with the 'discard' option.
Why wrong: A 'discard' route would still appear in the routing table.
- D
The next-hop IP is not on a directly connected subnet.
The next-hop is not reachable via a directly connected interface, so the route is not installed unless 'resolve' is used.
Question 43 of 514
JNCIA-JUNOS Routing Fundamentals Practice Question
This JNCIA-JUNOS practice question tests your understanding of routing fundamentals. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 is configured with next-hop 10.0.0.1, but the route does not appear in the routing table. The interface ge-0/0/0 has IP 192.168.1.2/24 and is up. What is the most likely reason?
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 next-hop IP is not on a directly connected subnet.
D is correct because Junos requires the next-hop IP of a static route to be reachable via a directly connected subnet for the route to be installed in the routing table. Since the next-hop 10.0.0.1 is not on the same subnet as the interface ge-0/0/0 (192.168.1.2/24), the route remains hidden and does not appear in the routing table.
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 static route has a preference of 5.
Why it's wrong here
Preference 5 is normal and would not prevent installation.
- ✗
The route is hidden due to an import policy.
Why it's wrong here
Import policies apply to dynamic routes, not static routes.
- ✗
The static route is configured with the 'discard' option.
Why it's wrong here
A 'discard' route would still appear in the routing table.
- ✓
The next-hop IP is not on a directly connected subnet.
Why this is correct
The next-hop is not reachable via a directly connected interface, so the route is not installed unless 'resolve' is used.
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.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume any IP address can be used as a next-hop for a static route, but Junos strictly enforces that the next-hop must be on a directly connected subnet unless recursive resolution is explicitly configured.
Detailed technical explanation
How to think about this question
In Junos, a static route's next-hop must be on a directly connected subnet for the route to be considered 'reachable' and installed in the inet.0 routing table. This is verified by the kernel checking the ARP table or neighbor discovery cache; if the next-hop is not directly connected, the route is placed in a hidden state (shown with 'show route hidden'). A common workaround is to use a static route with a next-hop that is reachable via another static route (recursive next-hop resolution) or to configure a qualified next-hop with a different preference.
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 segments a warehouse floor into three subnets: 20 scanners, 5 printers, and 2 management hosts. Picking the wrong mask wastes addresses or leaves too few usable hosts. Exam questions test whether you can apply CIDR notation, calculate block size, and identify the correct usable-host range for a given prefix.
Visual reference
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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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 next-hop IP is not on a directly connected subnet. — D is correct because Junos requires the next-hop IP of a static route to be reachable via a directly connected subnet for the route to be installed in the routing table. Since the next-hop 10.0.0.1 is not on the same subnet as the interface ge-0/0/0 (192.168.1.2/24), the route remains hidden and does not appear in the routing table.
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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