JNCIA-SEC Network Address Translation Practice Question
Which TWO statements are correct regarding the evaluation order and behavior of NAT in Junos OS? (Choose two)
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
✓
Destination NAT is evaluated before Source NAT.
Junos evaluates Destination NAT first and Static NAT last. Rules within rule-sets are evaluated top-down.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Source NAT rule-sets ignore source zones during packet processing.
Why it's wrong here
Source zones are mandatory and actively evaluated.
- ✓
Destination NAT is evaluated before Source NAT.
Why this is correct
Destination NAT takes precedence in the processing sequence over Source NAT.
- ✗
All NAT rules are evaluated simultaneously using longest-prefix matching.
Why it's wrong here
Junos uses sequential rule evaluation, not simultaneous longest-prefix NAT matching.
- ✗
Static NAT is evaluated before Destination NAT.
Why it's wrong here
Static NAT is evaluated last among NAT types.
- ✓
Rules within a NAT rule-set are evaluated sequentially in top-down order.
Why this is correct
Junos processes rules in the order they are configured.
Visual reference
About these practice questions
This JNCIA-SEC question is part of Courseiva's 513-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
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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.