JNCIA-SEC Network Address Translation Practice Question
An administrator wants to ensure that a source NAT pool dynamically assigns ports across multiple pool IP addresses to prevent port exhaustion on a single IP. Which feature configuration on the source NAT pool accomplishes load distribution of ports across multiple pool addresses?
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
✓
Configuring multiple pool IP addresses enables automatic port distribution across the pool by default.
In Junos, source NAT pools with multiple IP addresses can utilize port-loading or port-distribution features, or default pool round-robin mechanisms, but configuring port distribution ensures efficient spread across all pool IPs.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Interface-based NAT must be combined with pool-based NAT to achieve port load balancing.
Why it's wrong here
Combining interface and pool NAT is not required or standard for pool distribution.
- ✗
Static NAT must be enabled alongside the source NAT pool to load balance ports.
Why it's wrong here
Static NAT provides one-to-one mapping and does not load balance ports.
- ✗
The 'round-robin-ports' statement must be explicitly configured under the pool.
Why it's wrong here
Junos does not use a command called 'round-robin-ports'; distribution across pool IPs is handled inherently.
- ✓
Configuring multiple pool IP addresses enables automatic port distribution across the pool by default.
Why this is correct
When a source NAT pool has multiple IPs, Junos automatically distributes port allocations across the addresses in the pool.
Visual reference
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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.