Quick Answer
The answer is the exit command used at the top of the configuration hierarchy. This is correct because in Junos, the configuration mode is a separate CLI environment where changes are made to candidate configurations. When you type exit while at the top of the hierarchy (the [edit] prompt), the system interprets this as a request to leave configuration mode and return to operational mode, effectively ending the configuration session. On the JNCIA-Junos exam, this question tests your understanding of Junos CLI navigation and the distinction between operational and configuration modes. A common trap is confusing exit with commit or quit; exit only works cleanly when you are not nested within a configuration stanza. A helpful memory tip is to think of the configuration hierarchy as a building: you must be on the ground floor (the top) before you can exit through the front door.
This JNCIA-JUNOS practice question tests your understanding of user interfaces. 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.
Which THREE are valid methods to exit configuration mode in Junos? (Choose three.)
exit configuration-mode
Exits configuration mode.
commit and-quit
Commits and exits.
commit check
Why wrong: Does not exit configuration mode.
exit (at the top of the hierarchy)
Exits configuration mode.
quit
Why wrong: Not a standard command.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
exit configuration-mode
Option A is correct because 'exit configuration-mode' is a valid operational mode command that explicitly exits from configuration mode back to operational mode. This command is used when you are at the top of the configuration hierarchy and want to leave the configuration CLI session.
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.
exit configuration-mode
Why this is correct
Exits configuration mode.
Related concept
Read the scenario before looking for a memorised answer.
commit and-quit
Why this is correct
Commits and exits.
Related concept
Read the scenario before looking for a memorised answer.
commit check
Why it's wrong here
Does not exit configuration mode.
exit (at the top of the hierarchy)
Why this is correct
Exits configuration mode.
Related concept
Read the scenario before looking for a memorised answer.
quit
Why it's wrong here
Not a standard command.
Common exam traps
The trap here is that Cisco engineers often expect 'quit' to work (as it does in IOS), but Junos does not recognize 'quit' as a valid command, and 'commit check' is a validation command that does not exit configuration mode.
Trap categories for this question
Command / output trap
Not a standard command.
Detailed technical explanation
Junos uses a hierarchical CLI with two primary modes: operational mode (user@host>) and configuration mode (user@host#). The 'exit' command at the top of the configuration hierarchy returns to operational mode, while 'exit configuration-mode' achieves the same result explicitly. The 'commit and-quit' command commits the candidate configuration and then automatically exits configuration mode, which is useful for applying changes and leaving the configuration session in one step.
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
User Interfaces — This question tests User Interfaces — Read the scenario before looking for a memorised answer..
The correct answer is: exit configuration-mode — Option A is correct because 'exit configuration-mode' is a valid operational mode command that explicitly exits from configuration mode back to operational mode. This command is used when you are at the top of the configuration hierarchy and want to leave the configuration CLI session.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 11, 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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