hardMultiple ChoiceObjective-mapped
300-410 Practice Question: In MPLS L3VPN, which OSPF network type is used by…
In MPLS L3VPN, which OSPF network type is used by default on a Frame Relay point-to-point subinterface when OSPF is enabled?
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
✓
Point-to-point
On a point-to-point subinterface over Frame Relay, the default OSPF network type is point-to-point, which does not require DR/BDR election.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Broadcast
Why it's wrong here
Broadcast is not the default on point-to-point subinterfaces.
- ✗
Non-broadcast
Why it's wrong here
Non-broadcast is the default on physical Frame Relay interfaces, not subinterfaces.
- ✓
Point-to-point
Why this is correct
Correct. Point-to-point subinterfaces default to point-to-point network type.
- ✗
Point-to-multipoint
Why it's wrong here
Point-to-multipoint is not the default; it must be explicitly configured.
Visual reference
Quick reference
Routing Protocol Comparison
| Protocol | Metric | Max Hops | Algorithm | Type |
|---|---|---|---|---|
| RIP v2 | Hop count | 15 | Bellman-Ford | Distance vector |
| OSPF | Cost (bandwidth) | Unlimited | Dijkstra (SPF) | Link state |
| EIGRP | Composite metric | Unlimited | DUAL | Hybrid |
| IS-IS | Cost | Unlimited | Dijkstra | Link state |
| BGP | Policy / attributes | Unlimited | Path vector | Path vector |
RIP's 15-hop limit makes it unsuitable for large networks. OSPF and EIGRP dominate modern enterprise deployments.
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 Layer 3 VPN
A technology that uses Multiprotocol Label Switching to create secure, scalable virtual private networks that connect multiple sites at the network layer, where the service provider manages routing between customer sites.
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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.