The answer is that MPLS is enabled and operational on GigabitEthernet0/0 and GigabitEthernet0/1. This conclusion is drawn directly from the show mpls interfaces output, where the IP column indicates whether MPLS label imposition is enabled for IP forwarding on that interface, and the Operational column confirms whether the MPLS protocol session is actually active and passing traffic. In this output, both GigabitEthernet0/0 and GigabitEthernet0/1 show "Yes" in both the IP and Operational columns, while GigabitEthernet0/2 shows "No" in both, meaning MPLS is neither configured nor functioning there. On the ENCOR 350-401 exam, this command tests your ability to quickly verify MPLS interface status and distinguish between configuration (IP column) and operational state, a common trap being to assume an interface is working just because it has an IP address. Remember the memory tip: "IP says it's ready, Operational says it's running"—both must be "Yes" for MPLS to be truly active.
350-401 MPLS Practice Question
This 350-401 practice question tests your understanding of mpls. Examine the command output carefully: the correct answer depends on what the output actually shows, not on general recall alone. 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.
A network engineer runs the following command on Router R4:
R4# show mpls interfaces
Interface IP Tunnel BGP Static Operational
GigabitEthernet0/0 Yes No No No Yes
GigabitEthernet0/1 Yes No No No Yes
GigabitEthernet0/2 No No No No No
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
MPLS is enabled and operational on GigabitEthernet0/0 and GigabitEthernet0/1.
The command shows which interfaces are enabled for MPLS. The 'IP' column indicates if MPLS is enabled for IP forwarding. 'Operational' shows if MPLS is actually up. Gi0/2 has MPLS disabled (IP: No) and is not operational.
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.
✓
MPLS is enabled and operational on GigabitEthernet0/0 and GigabitEthernet0/1.
Why this is correct
Both interfaces show IP: Yes and Operational: Yes.
Related concept
Read the scenario before looking for a memorised answer.
✗
MPLS is enabled on all three interfaces, but only Gi0/0 and Gi0/1 are operational.
Why it's wrong here
Gi0/2 has IP: No, meaning MPLS is not enabled on that interface.
✗
BGP and Static label switching are enabled on Gi0/0 and Gi0/1.
Why it's wrong here
The BGP and Static columns show 'No' for both interfaces.
✗
Tunnel interfaces are configured on Gi0/0 and Gi0/1.
Why it's wrong here
The Tunnel column shows 'No' for both.
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
The BGP and Static columns show 'No' for both interfaces.
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 350-401 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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this 350-401 question in full detail.
Identify which 350-401 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.
MPLS — This question tests MPLS — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: MPLS is enabled and operational on GigabitEthernet0/0 and GigabitEthernet0/1. — The command shows which interfaces are enabled for MPLS. The 'IP' column indicates if MPLS is enabled for IP forwarding. 'Operational' shows if MPLS is actually up. Gi0/2 has MPLS disabled (IP: No) and is not operational.
What should I do if I get this 350-401 question wrong?
Identify which 350-401 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.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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