hardMultiple ChoiceObjective-mapped
300-410 Independent Label Distribution Control Practice Question
In MPLS, what is the default label distribution control mode for LDP on Cisco IOS-XE?
⚠ Common exam trap
Many candidates mistakenly think Ordered is the default for LDP, but it is actually Independent. Ordered is used in MPLS TE or when explicitly configured.
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
✓
Independent Label Distribution Control mode
The default label distribution control mode for LDP on Cisco IOS-XE is Independent. In Independent mode, a router can advertise a label for a FEC as soon as it has forwarding information (e.g., a route) for that FEC, without waiting for a label from its next hop. Ordered mode, on the other hand, requires the router to wait for a label from the next hop before advertising, which is not the default for LDP (though it is used for RSVP-TE and other applications).
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
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Ordered Label Distribution Control mode
Why it's wrong here
Ordered Label Distribution Control mode is not the default for LDP on Cisco IOS-XE. It requires explicit configuration or is used with other protocols like RSVP-TE.
- ✓
Independent Label Distribution Control mode
Why this is correct
Independent Label Distribution Control mode is the default for LDP on Cisco IOS-XE. Routers can advertise labels without waiting for downstream labels, which is the correct answer.
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Liberal Label Retention mode
Why it's wrong here
Liberal Label Retention mode is a label retention mode, not a control mode. It retains all received labels even if not used, but it is not related to the ordering of label advertisement.
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Conservative Label Retention mode
Why it's wrong here
Conservative Label Retention mode is another label retention mode where only labels from next-hop peers are retained. It is not a label distribution control mode and is not the default for LDP.
Go deeper
Related to this question
Learn chapter
OSPF Route Summarization and Filtering
Key term
MPLS Label Distribution
MPLS Label Distribution is the process by which routers exchange labels that tell them how to forward packets across a network without looking at the IP address each time.
Key term
LDP Protocol
LDP, or Label Distribution Protocol, is a protocol that routers use to automatically exchange labels that enable MPLS (Multiprotocol Label Switching) to create fast, efficient paths for data packets across a network.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 300-410 practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 300-410 exam.