JN0-106 Junos Configuration Basics Practice Question
Which configuration group feature allows an administrator to apply common configuration settings to multiple interfaces without repeating the configuration?
⚠ Common exam trap
Test-takers frequently confuse `groups` (the definition container) with `apply-groups` (the activation command), often selecting Option A because they think defining the group is sufficient, but without `apply-groups`, the group configuration is never applied.
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
✓
apply-groups
The `apply-groups` statement is the correct feature because it allows an administrator to define a common configuration template within a `groups` hierarchy and then apply that template to multiple interfaces (or other configuration sections) using the `apply-groups` command. This avoids repeating the same configuration statements across individual interfaces, streamlining management and reducing errors.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
groups statement
Why it's wrong here
The "groups" statement is a container that defines a named configuration group with reusable settings, but it does not activate those settings at any hierarchy level. Merely defining a group has no effect until an "apply-groups" statement references it, so this option fails to accomplish the task of applying configuration. Groups are not automatically inherited; they must be explicitly applied.
- ✗
interface-range
Why it's wrong here
The "interface-range" feature allows bulk configuration of multiple interfaces by matching a naming pattern, but it requires explicit definition of the range with a name and interface match criteria. It does not apply an arbitrary group of configuration statements across the hierarchy; it is limited to interface configuration and does not provide a general mechanism for applying a pre-defined configuration group.
- ✓
apply-groups
Why this is correct
The "apply-groups" statement is the correct feature; it references a named group defined under the "groups" hierarchy and applies that group's configuration to the current hierarchy level. When placed at a particular level, it causes the configuration from the referenced group to be merged or overlaid, providing inheritance and override capabilities. This is the standard method for reusing configuration blocks and applying them to multiple levels.
- ✗
apply-path
Why it's wrong here
The "apply-path" statement dynamically generates configuration for interfaces based on the actual values found in a specified configuration path, such as the list of interfaces that have an IP address. It is used within certain configuration statements (like firewall filters or routing options) to reference existing configuration objects without hard-coding their names. However, it does not apply a static configuration group; it is a dynamic referencing mechanism for interface names, not for applying an entire configuration snippet.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This JN0-106 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 JN0-106 exam.