20+ practice questions focused on Junos Configuration Basics — one of the most tested topics on the Juniper Networks Certified Associate Junos JNCIA-Junos exam. Each question includes a detailed explanation so you learn why the right answer is correct.
Start Junos Configuration Basics PracticeA network engineer is configuring a new Juniper device. They intend to apply a firewall filter to an interface to only allow SSH traffic from a specific management subnet. Which configuration approach best follows Juniper best practices?
Explanation: To restrict SSH access to the device, the filter should be applied to the loopback interface (lo0) because all local control-plane traffic is received on lo0. Applying to a single physical interface (ge-0/0/0) only filters traffic on that interface and does not protect SSH access from other interfaces. The correct configuration is: define the filter under 'firewall family inet' and apply it under 'interfaces lo0 unit 0 family inet filter input filter-name'.
A junior engineer is asked to change the hostname of a Juniper device from 'Router-1' to 'Core-Router'. Which command sequence correctly commits the change?
Explanation: A, B, and D are all valid ways to change the hostname and commit. A and D use the full path 'set system host-name Core-Router; commit' from the top of configuration mode. B uses 'edit system' to enter the [edit system] hierarchy, then 'set host-name Core-Router; commit' — this is also valid because 'set host-name' is interpreted relative to [edit system] and commit commits the candidate configuration. Option C is invalid because the Junos statement is 'host-name', not 'hostname'.
A network administrator wants to view the current candidate configuration that has not yet been committed. Which command should be used?
Explanation: The candidate configuration is the configuration being edited but not yet committed. To view it, you must be in configuration mode and use the 'show' command. The 'show configuration' command is used in operational mode to display the active committed configuration. Therefore, none of the provided options is correct.
After making several configuration changes, an engineer wants to see what changes were made in the candidate configuration compared to the last committed configuration. Which command should be used?
Explanation: The 'show configuration | compare' command displays the differences between the candidate configuration and the active committed configuration. This pipe filter compares the current candidate configuration against the last committed configuration, showing added, changed, or deleted lines with '+' and '-' prefixes, which directly meets the engineer's requirement.
Which TWO statements are true regarding the Junos OS commit model?
Explanation: Junos OS allows multiple users to enter configure private mode, where each user has an independent candidate configuration. This prevents conflicts and allows simultaneous edits without interfering with each other's changes. Option E is correct because the 'commit' command activates the candidate configuration, making it the active configuration on the device.
+15 more Junos Configuration Basics questions available
Practice all Junos Configuration Basics questions1. Baseline your knowledge
Start with 10 questions to gauge your current understanding of Junos Configuration Basics. This tells you whether you need a concept refresher or just practice.
2. Review every explanation
For each question — right or wrong — read the full explanation. Understanding why an answer is correct is more valuable than knowing the answer itself.
3. Focus on exam traps
Junos Configuration Basics questions on the JN0-106 frequently use trap wording. Look for subtle differences in answers that test your precision, not just general knowledge.
4. Reach 80% consistently
Do repeated sessions until you score 80%+ three times in a row. Then move to mixed-mode practice to test cross-topic recall under realistic conditions.
The exact number varies per candidate. Junos Configuration Basics is tested as part of the Juniper Networks Certified Associate Junos JNCIA-Junos blueprint. Practicing with targeted Junos Configuration Basics questions ensures you can handle any format or difficulty that appears.
Yes. Courseiva provides free JN0-106 practice questions across all exam topics and domains. The platform includes topic-based practice, mock exams, missed-question review, bookmarked questions, and readiness tracking — no account required.
Difficulty is subjective, but Junos Configuration Basics is a high-priority exam concept tested in multiple ways — direct recall, scenario analysis, and command-output interpretation. Consistent practice is the best way to build confidence.
Launch a full Junos Configuration Basics practice session with instant scoring and detailed explanations.
Start Junos Configuration Basics Practice →