Quick Answer
The answer is P2MP, or Point-to-Multipoint, because the output of the show mpls ldp capabilities command explicitly lists this capability as “not advertised,” indicating the router does not support it. In MPLS LDP, capabilities are exchanged between peers to agree on supported features; if a capability like P2MP is not advertised, the router cannot participate in multicast LSP signaling or traffic engineering for point-to-multipoint label switched paths. On the ENCOR 350-401 exam, this command tests your ability to read LDP capability output and distinguish between advertised and unsupported features—a common trap is confusing “not advertised” with “disabled” or assuming all capabilities are enabled by default. A useful memory tip is to think of P2MP as “Point-to-Many Paths”—if it’s not advertised, the router can only handle point-to-point LSPs, so remember “no P2MP, no multicast MPLS.”
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 R7:
R7# show mpls ldp capabilities
LDP Capabilities: Dynamic Capability: advertised Typed Wildcard FEC: advertised MTU Signaling: advertised P2MP: not advertised MPLS OAM: advertised LDP Graceful Restart: advertised Helper mode: enabled Restart mode: enabled Reconnect time: 120 sec Recovery time: 180 sec
Based on this output, which capability is NOT supported by this router?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "NOT"
Why it matters: Negative qualifier — you are looking for the one option that does NOT apply. Most options will be true; only one is false for this scenario.
LDP Graceful Restart
Why wrong: It is advertised, as shown.
MTU Signaling
Why wrong: It is advertised.
P2MP (Point-to-Multipoint)
It is listed as 'not advertised'.
Dynamic Capability
Why wrong: It is advertised.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
P2MP (Point-to-Multipoint)
The output lists capabilities that are advertised. P2MP (Point-to-Multipoint) is explicitly listed as 'not advertised', meaning it is not supported.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
LDP Graceful Restart
Why it's wrong here
It is advertised, as shown.
MTU Signaling
Why it's wrong here
It is advertised.
P2MP (Point-to-Multipoint)
Why this is correct
It is listed as 'not advertised'.
Clue confirmation
The clue word "NOT" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Dynamic Capability
Why it's wrong here
It is advertised.
Common exam traps
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
It is advertised, as shown.
Detailed technical explanation
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.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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.
What to study next
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 — study guide chapter
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FAQ
MPLS — This question tests MPLS — Read the scenario before looking for a memorised answer..
The correct answer is: P2MP (Point-to-Multipoint) — The output lists capabilities that are advertised. P2MP (Point-to-Multipoint) is explicitly listed as 'not advertised', meaning it is not supported.
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.
Yes — watch for: "NOT". Negative qualifier — you are looking for the one option that does NOT apply. Most options will be true; only one is false for this scenario.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 18, 2026
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