JNCIA-SEC Junos OS Security Objects Practice Question
An administrator creates a security zone and defines both a zone-specific address book and a global address book. The same address name exists in both address books with conflicting subnets. When a security policy references this address name from a different security zone, which address definition is selected?
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
✓
The global address book entry is selected because the policy is evaluated outside the local zone context.
When traffic originates from a zone other than the zone where the zone-specific address book resides, the global address book entry is used because the zone-specific book only applies to traffic originating from or associated with its specific zone context.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Both subnets are logically ORed together.
Why it's wrong here
Subnets are not merged in this scenario.
- ✗
The zone-specific address book entry is always selected.
Why it's wrong here
Zone-specific address books take precedence for traffic associated with that zone, but global takes precedence when evaluated from other zones.
- ✗
Junos drops the traffic due to ambiguous address resolution.
Why it's wrong here
Junos resolves ambiguity using clear precedence rules between global and zone-specific address books.
- ✓
The global address book entry is selected because the policy is evaluated outside the local zone context.
Why this is correct
Global entries serve as the fallback/default when evaluating zones that do not own the local address book.
Visual reference
About these practice questions
One of 520 original JNCIA-SEC practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official Juniper Networks exam blueprint
This JNCIA-SEC 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-SEC exam.