The correct command is `set routing-options static route 10.10.10.0/24 next-hop 192.168.1.1`, because Junos uses a hierarchical configuration structure where static routes are defined under the `routing-options` stanza, requiring the destination prefix in CIDR notation followed by the `next-hop` keyword and the gateway address. This syntax directly installs the route into the inet.0 routing table, and any deviation—such as omitting the subnet mask or using a non-CIDR format—will cause a commit error. On the JNCIA-Junos exam, this static route configuration command syntax is a frequent topic, often testing your ability to distinguish the correct hierarchy from common traps like using `set protocols static` or forgetting the `/24` mask. A reliable memory tip is to think of the phrase “Options, then route”—you must navigate to `routing-options` before you can add a static route, and always pair the network with its CIDR prefix length.
JNCIA-JUNOS Junos Configuration Basics Practice Question
This JNCIA-JUNOS practice question tests your understanding of junos configuration basics. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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.
An administrator is configuring a static route to a remote network 10.10.10.0/24 via next-hop 192.168.1.1. Which command correctly adds this route?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "which command"
Why it matters: Tests specific CLI syntax. Recall the exact command and its required context — near-synonyms and partial matches are common distractors.
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 static route 10.10.10.0/24 next-hop 192.168.1.1
Option D is correct because the Junos syntax for configuring a static route uses the hierarchy `set routing-options static route <destination-prefix> next-hop <address>`. The prefix must include the subnet mask in CIDR notation (e.g., /24). This command installs a route to 10.10.10.0/24 with next-hop 192.168.1.1 into 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.
✗
set routing-options route 10.10.10.0/24 static next-hop 192.168.1.1
Why it's wrong here
Incorrect order of keywords.
✗
set routing-options static route 10.10.10.0 next-hop 192.168.1.1 mask 255.255.255.0
Why it's wrong here
The prefix must be in CIDR notation, not with separate mask.
✗
set routing-options static next-hop 192.168.1.1
Why it's wrong here
Missing the route prefix.
✓
set routing-options static route 10.10.10.0/24 next-hop 192.168.1.1
The clue word "which command" 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 familiar with Cisco IOS may try to use a separate `mask` parameter (as in Option B) or place the route directly under `routing-options route` (as in Option A), failing to recognize Junos requires the `static route` hierarchy and CIDR notation in the destination.
Trap categories for this question
Keyword trap
Incorrect order of keywords.
Detailed technical explanation
How to think about this question
Junos stores static routes in the `route` table under `routing-options static`, and each route is identified by its destination prefix. The next-hop can be an IP address, a discard, or an interface. Unlike Cisco IOS, Junos does not use a separate `mask` keyword; the prefix length is always part of the destination. This design aligns with the unified forwarding table (RIB) model, where all routes are stored with their prefix length.
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 small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
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.
Junos Configuration Basics — This question tests Junos Configuration Basics — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: set routing-options static route 10.10.10.0/24 next-hop 192.168.1.1 — Option D is correct because the Junos syntax for configuring a static route uses the hierarchy `set routing-options static route <destination-prefix> next-hop <address>`. The prefix must include the subnet mask in CIDR notation (e.g., /24). This command installs a route to 10.10.10.0/24 with next-hop 192.168.1.1 into 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: "which command". Tests specific CLI syntax. Recall the exact command and its required context — near-synonyms and partial matches are common distractors.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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