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300-410 Practice Question: Which statement accurately describes the behavior…
Which statement accurately describes the behavior of the ip nat inside source static command when configuring static NAT for a single inside host?
⚠ Common exam trap
Cisco often tests the misconception that static NAT requires an access list or that it behaves like dynamic NAT with timeouts, leading candidates to incorrectly choose options A or C.
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
✓
It creates a permanent mapping that remains in the NAT table until the configuration is removed.
The `ip nat inside source static` command creates a permanent one-to-one mapping between an inside local IP address and an inside global IP address. This static entry remains in the NAT table indefinitely until the administrator explicitly removes it with the `no ip nat inside source static` command, making option B correct.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
It dynamically allocates the global address from a pool and removes the entry after an idle timeout.
Why it's wrong here
This describes dynamic NAT, not static NAT.
- ✓
It creates a permanent mapping that remains in the NAT table until the configuration is removed.
Why this is correct
Correct. Static NAT entries are permanent and do not age out.
- ✗
It requires the use of an access list to define which traffic is translated.
Why it's wrong here
Access lists are used with dynamic NAT, not static NAT.
- ✗
It translates only TCP and UDP traffic by default.
Why it's wrong here
Static NAT translates all IP traffic, not only TCP and UDP.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 300-410 practice question is part of Courseiva's free Cisco 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 300-410 exam.