mediumMultiple ChoiceObjective-mapped
300-410 Practice Question: Consider this OSPF configuration on router R4:…
Consider this OSPF configuration on router R4:
router ospf 1 network 192.168.1.0 0.0.0.255 area 0 neighbor 10.0.0.2
What is the effect of the neighbor statement?
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 neighbor command is ignored because the network type is broadcast by default on Ethernet interfaces.
The neighbor command is used in OSPF for non-broadcast multi-access (NBMA) networks to manually specify neighbors. However, the interface used to reach 10.0.0.2 must be configured with the appropriate network type (e.g., point-to-multipoint or non-broadcast). If the network type is broadcast or point-to-point, the neighbor command is ignored.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
R4 will attempt to form an OSPF adjacency with 10.0.0.2 over any interface that can reach it.
Why it's wrong here
Incorrect. The neighbor command is only effective on interfaces with network type NBMA or point-to-multipoint.
- ✓
The neighbor command is ignored because the network type is broadcast by default on Ethernet interfaces.
Why this is correct
Correct. On Ethernet, OSPF uses multicast discovery; the neighbor command is not needed and is ignored.
- ✗
R4 will send unicast OSPF packets to 10.0.0.2, but only if the interface is in area 0.
Why it's wrong here
Incorrect. The neighbor command does not change the multicast behavior on broadcast networks.
- ✗
The configuration is invalid because the neighbor command must include a priority.
Why it's wrong here
Incorrect. The neighbor command can be used without priority.
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
About these practice questions
One of 1,966 original 300-410 practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. 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.