Question 1mediumdrag order
Read the full VRF explanation →Question 1,206 of 2,015
Quick Answer
The answer is to enable ip nat inside source list with the VRF keyword as the final step. This is correct because VRF-aware NAT requires the router to associate the translation with a specific routing instance; without the VRF keyword appended to the ip nat inside source command, the router applies the translation globally rather than within the designated VRF, breaking traffic isolation. On the ENCOR 350-401 exam, this drag-and-drop task tests your understanding that VRF-aware NAT configuration steps must follow a strict sequence: first define the VRF, then assign inside and outside interfaces under that VRF, configure the NAT pool and access list, and finally enable NAT with the VRF keyword. A common trap is placing the VRF keyword on the interface configuration instead of the NAT source command, which prevents the translation from binding to the correct routing table. Remember the mnemonic “V-I-P-N-A” — VRF, Interfaces, Pool, NAT-list, Activate — to lock in the order from first to last.
CCNP VRF and Path Isolation Practice Question
This 350-401 practice question tests your understanding of vrf and path isolation. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Drag and drop the steps of VRF-aware NAT configuration steps into the correct order, from first to last.
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"first"Why it matters: Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
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
✓
Define VRF and assign route distinguisher
The correct order starts with defining the VRF, then configuring the inside and outside interfaces under the VRF, defining the NAT pool (if used), applying the access list for translation, and finally enabling NAT inside source with the VRF keyword.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
- Static NAT maps one inside address to one outside address.
- PAT allows many inside hosts to share one public address using ports.
- Inside local and inside global describe the private and translated addresses.
- NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
- Identify inside and outside interfaces first.
- Check whether the scenario needs static NAT, dynamic NAT or PAT.
- Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
How this comes up in practice
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
What to study next
Got this wrong? Here's your next step.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related 350-401 NAT questions on configuration and troubleshooting.
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VRF and Path Isolation — study guide chapter
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VRF and Path Isolation practice questions
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FAQ
Questions learners often ask
What does this 350-401 question test?
VRF and Path Isolation — This question tests VRF and Path Isolation — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Define VRF and assign route distinguisher — The correct order starts with defining the VRF, then configuring the inside and outside interfaces under the VRF, defining the NAT pool (if used), applying the access list for translation, and finally enabling NAT inside source with the VRF keyword.
What should I do if I get this 350-401 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related 350-401 NAT questions on configuration and troubleshooting.
Are there clue words in this question I should notice?
Yes — watch for: "first". Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Same concept, more angles
2 more ways this is tested on 350-401
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. Drag and drop the steps of VRF-aware NAT configuration steps into the correct order, from first to last.
medium- ✓ A.Create VRF and assign route distinguisher
- ✓ B.Configure ip nat inside/outside on VRF interfaces
- ✓ C.Define NAT pool or access-list for translation
- ✓ D.Apply ip nat inside source list pool vrf
- ✓ E.Verify with show ip nat translations vrf
Why A: The correct order first defines the VRF, then configures the NAT inside and outside interfaces under the VRF, defines the NAT pool or ACL for translation, applies the NAT rule referencing the VRF, and finally verifies the translation with show ip nat translations vrf.
Variation 2. Drag and drop the steps of VRF-aware NAT configuration for path isolation into the correct order, from first to last.
medium- ✓ A.Create VRF and assign route distinguisher
- ✓ B.Configure NAT inside/outside interfaces under VRF
- ✓ C.Define NAT pool and access list
- ✓ D.Apply NAT rules with 'ip nat inside source'
- ✓ E.Verify NAT translations per VRF
Why A: First, you create the VRF and assign an RD. Then, you configure the NAT inside and outside interfaces under the VRF. Next, you define the NAT pool and access list for translation. After that, you apply the NAT rules with 'ip nat inside source' referencing the VRF. Finally, you verify NAT translations using 'show ip nat translations vrf'.
Last reviewed: Jun 18, 2026
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