Question 1,977 of 2,152

VRF-Lite →mediumMultiple ChoiceObjective-mapped

Quick Answer

The correct answer is that the interface is placed into VRF CUSTOMER_A, and the IP address is assigned correctly. This is because the ip vrf forwarding command associates the interface with a specific VRF, effectively binding it to that VRF’s separate routing table and forwarding instance. A critical technical detail is that this command clears any previously configured IP address on the interface, so the address must be re-applied after the VRF assignment, as shown in the configuration where the IP is configured after the VRF command. On the Cisco CCNP ENARSI 300-410 exam, this tests your understanding of VRF-lite configuration and the order-of-operations trap where candidates forget that the IP address is wiped out when the VRF is applied. A common memory tip is “VRF first, then IP—never the other way around,” ensuring you always reconfigure the address after binding the interface to the VRF.

300-410 VRF-Lite Practice Question

This 300-410 practice question tests your understanding of vrf-lite. 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.

Given the following partial configuration on router R1: ```

interface GigabitEthernet0/0
 ip vrf forwarding CUSTOMER_A
 ip address 192.168.1.1 255.255.255.0

``` What is the effect of this configuration?

Question 1mediummultiple choice

Read the full VRF explanation →

A
The interface is placed into VRF CUSTOMER_A, and the IP address is assigned correctly.
This is correct. The VRF association is applied before the IP address, so the IP address is associated with the VRF.
B
The interface is placed into VRF CUSTOMER_A, but the IP address is ignored because it must be configured before the VRF command.
Why wrong: Incorrect. The order shown (VRF first, then IP) is the correct order to avoid IP address removal.
C
The VRF name is misspelled; it should be 'vrf forwarding CUSTOMER_A' under the interface.
Why wrong: Incorrect. The command syntax is correct: 'ip vrf forwarding <name>'.
D
The configuration will fail because VRF CUSTOMER_A must be created globally first.
Why wrong: Incorrect. The VRF must be defined globally with 'ip vrf CUSTOMER_A' before it can be used on an interface. The configuration shown assumes it exists; if not, the command will be rejected.

Full breakdown with real-world context →

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

✓

The interface is placed into VRF CUSTOMER_A, and the IP address is assigned correctly.

The 'ip vrf forwarding' command associates the interface with a VRF. It removes the IP address if one was previously configured, requiring it to be re-applied. This ensures traffic on this interface is forwarded using the VRF's routing table.

Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

✓
The interface is placed into VRF CUSTOMER_A, and the IP address is assigned correctly.
Why this is correct
This is correct. The VRF association is applied before the IP address, so the IP address is associated with the VRF.
Related concept
Read the scenario before looking for a memorised answer.
✗
The interface is placed into VRF CUSTOMER_A, but the IP address is ignored because it must be configured before the VRF command.
Why it's wrong here
Incorrect. The order shown (VRF first, then IP) is the correct order to avoid IP address removal.
✗
The VRF name is misspelled; it should be 'vrf forwarding CUSTOMER_A' under the interface.
Why it's wrong here
Incorrect. The command syntax is correct: 'ip vrf forwarding <name>'.
✗
The configuration will fail because VRF CUSTOMER_A must be created globally first.
Why it's wrong here
Incorrect. The VRF must be defined globally with 'ip vrf CUSTOMER_A' before it can be used on an interface. The configuration shown assumes it exists; if not, the command will be rejected.

Common exam traps

Common exam trap: answer the scenario, not the keyword

Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.

Trap categories for this question

Command / output trap
Incorrect. The order shown (VRF first, then IP) is the correct order to avoid IP address removal.

Detailed technical explanation

How to think about this question

This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.

KKey Concepts to Remember

Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
Use explanations to understand the rule behind the answer.

TExam Day Tips

Underline the problem statement mentally.
Watch for words such as best, first, most likely and least administrative effort.
Review why wrong options are wrong, not only why the correct option is correct.

Key takeaway

Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

Real-world example

How this comes up in practice

A practitioner preparing for the 300-410 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.

What to study next

Got this wrong? Here's your next step.

Identify which 300-410 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.

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FAQ

Questions learners often ask

What does this 300-410 question test?

VRF-Lite — This question tests VRF-Lite — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: The interface is placed into VRF CUSTOMER_A, and the IP address is assigned correctly. — The 'ip vrf forwarding' command associates the interface with a VRF. It removes the IP address if one was previously configured, requiring it to be re-applied. This ensures traffic on this interface is forwarded using the VRF's routing table.

What should I do if I get this 300-410 question wrong?

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

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