Quick Answer
The answer is the request support information command. This is the correct choice because it captures a comprehensive snapshot of the current operational state, including the active configuration, system logs, routing tables, and interface statistics, then packages everything into a single compressed file like /var/tmp/support-info-date-time.tgz, which is the standard format Juniper support expects for troubleshooting. On the JNCIA-Junos exam, this command tests your understanding of operational monitoring and diagnostic procedures, often appearing as a straightforward recall question. A common trap is confusing it with show commands or request system snapshot, which capture only specific data or backup images rather than a full operational state. To remember it, think of the word “support” in the command—when you need to request help from Juniper, you request support information to give them the complete picture.
This JNCIA-JUNOS practice question tests your understanding of junos os 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.
Which command saves the current operational state information to a file that can be provided to Juniper support for troubleshooting?
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.
request support information
This command gathers operational data into a file for support.
monitor traffic
Why wrong: This captures live traffic, not system state.
show system information
Why wrong: This displays information but does not save to a file.
file copy
Why wrong: This copies files; it does not generate a support file.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
request support information
The 'request support information' command collects a comprehensive snapshot of the current operational state, including configuration, logs, routing tables, and interface statistics, and packages it into a file (e.g., /var/tmp/support-info-date-time.tgz) that can be directly provided to Juniper support for troubleshooting. This is the standard Junos method for gathering diagnostic data.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
request support information
Why this is correct
This command gathers operational data into a file for support.
Clue confirmation
The clue word "which command" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
monitor traffic
Why it's wrong here
This captures live traffic, not system state.
show system information
Why it's wrong here
This displays information but does not save to a file.
file copy
Why it's wrong here
This copies files; it does not generate a support file.
Common exam traps
The trap here is that candidates may confuse 'show system information' with a support data collection tool, not realizing it only displays a brief summary and does not generate a comprehensive, saveable file for support.
Detailed technical explanation
The 'request support information' command executes a series of internal scripts that gather data from multiple subsystems, including the kernel, routing protocol daemon (RPD), and chassis daemon, then compresses the output into a tar.gz archive. In real-world scenarios, this file is essential for Juniper JTAC to analyze issues like routing loops, memory leaks, or hardware faults without requiring the engineer to manually collect each piece of data.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the JNCIA-JUNOS exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
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
Junos OS Fundamentals — This question tests Junos OS Fundamentals — Read the scenario before looking for a memorised answer..
The correct answer is: request support information — The 'request support information' command collects a comprehensive snapshot of the current operational state, including configuration, logs, routing tables, and interface statistics, and packages it into a file (e.g., /var/tmp/support-info-date-time.tgz) that can be directly provided to Juniper support for troubleshooting. This is the standard Junos method for gathering diagnostic data.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
This JNCIA-JUNOS 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 JNCIA-JUNOS exam.
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