mediumMultiple ChoiceObjective-mapped
300-410 Practice Question: Runs the following command to verify MPLS L3VPN…
A network engineer runs the following command to verify MPLS L3VPN operation:
R1# show mpls ldp bindings
Output: lib entry: 10.1.1.0/24, rev 2 local binding: label: 101 remote binding: lsr: 10.0.0.2:0, label: 201 lib entry: 10.2.2.0/24, rev 4 local binding: label: 102 remote binding: lsr: 10.0.0.2:0, label: 202 lib entry: 10.3.3.0/24, rev 6 local binding: label: 103 remote binding: lsr: 10.0.0.2:0, label: imp-null
What does this output indicate?
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 router has learned labels for three prefixes from LSR 10.0.0.2
The show mpls ldp bindings command displays the Label Information Base (LIB) entries. Each entry shows a prefix, the local label assigned by this router, and the remote label learned from a specific LSR (10.0.0.2). The third entry shows 'imp-null' for the remote label, meaning the neighbor is using implicit null (label 3) for that prefix, typically for BGP-free core or PHP.
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 router has learned labels for three prefixes from LSR 10.0.0.2
Why this is correct
The output shows three LIB entries with remote bindings from 10.0.0.2.
- ✗
The router is using MPLS TE
Why it's wrong here
No TE-related information is shown.
- ✗
The router is a route reflector
Why it's wrong here
This output does not indicate BGP route reflection.
- ✗
The router has a label for 10.3.3.0/24 that is implicit null
Why it's wrong here
The local label is 103; the remote label from 10.0.0.2 is imp-null, not the local label.
Go deeper
Related to this question
Learn chapter
Introduction to ENARSI Exam and Network Fundamentals
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.
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.
About these practice questions
Courseiva writes every 300-410 question from scratch — 1,966 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
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.