- A
In VRF-lite, each VRF maintains its own independent routing table.
Correct because the core concept of VRF-lite is per-VRF routing tables for path isolation.
- B
Interfaces are assigned to a VRF using the 'ip vrf forwarding' command under interface configuration.
Correct because 'ip vrf forwarding <vrf-name>' associates an interface with a specific VRF.
- C
VRF-lite requires MPLS enabled on all interfaces.
Why wrong: Incorrect because VRF-lite is specifically designed to work without MPLS.
- D
VRF-lite can only use static routes for inter-VRF communication.
Why wrong: Incorrect because dynamic routing protocols like OSPF, EIGRP, and BGP can be used within VRFs.
- E
A router can have at most two VRFs configured.
Why wrong: Incorrect because Cisco IOS supports many VRFs (the exact limit depends on platform and memory).
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.
Which two statements about VRF-lite configuration are true? (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
In VRF-lite, each VRF maintains its own independent routing table.
VRF-lite provides path isolation on a single router without MPLS. The correct answers describe that VRF-lite uses separate routing tables and that interfaces are assigned to VRFs. The incorrect options wrongly claim that VRF-lite requires MPLS or that it supports only static routing.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
In VRF-lite, each VRF maintains its own independent routing table.
Why this is correct
Correct because the core concept of VRF-lite is per-VRF routing tables for path isolation.
Related concept
Static NAT maps one inside address to one outside address.
- ✓
Interfaces are assigned to a VRF using the 'ip vrf forwarding' command under interface configuration.
Why this is correct
Correct because 'ip vrf forwarding <vrf-name>' associates an interface with a specific VRF.
Related concept
Static NAT maps one inside address to one outside address.
- ✗
VRF-lite requires MPLS enabled on all interfaces.
Why it's wrong here
Incorrect because VRF-lite is specifically designed to work without MPLS.
- ✗
VRF-lite can only use static routes for inter-VRF communication.
- ✗
A router can have at most two VRFs configured.
Why it's wrong here
Incorrect because Cisco IOS supports many VRFs (the exact limit depends on platform and memory).
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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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: In VRF-lite, each VRF maintains its own independent routing table. — VRF-lite provides path isolation on a single router without MPLS. The correct answers describe that VRF-lite uses separate routing tables and that interfaces are assigned to VRFs. The incorrect options wrongly claim that VRF-lite requires MPLS or that it supports only static routing.
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.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
About these practice questions
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Last reviewed: Jun 18, 2026
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