mediumMultiple ChoiceObjective-mapped
300-410 Practice Question: Runs the following command on Router R1: R1# show…
A network engineer runs the following command on Router R1:
R1# show ip ospf neighbor vrf BLUE Neighbor ID Pri State Dead Time Address Interface 10.0.0.2 1 FULL/DR 00:00:32 10.1.1.2 GigabitEthernet0/0 10.0.0.3 1 2WAY/DROTHER 00:00:35 10.1.2.2 GigabitEthernet0/1
Based on this output, which statement is correct?
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 OSPF adjacencies are functioning normally.
The output shows two OSPF neighbors for VRF BLUE. Neighbor 10.0.0.2 is in FULL state and is the DR on GigabitEthernet0/0. Neighbor 10.0.0.3 is in 2WAY state and is a DROTHER on GigabitEthernet0/1. The 2WAY state is normal for neighbors that are not DR/BDR on a multi-access network. No problem is evident.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Neighbor 10.0.0.3 is not forming a full adjacency because it is a DROTHER.
Why it's wrong here
DROTHERs remain in 2WAY state and do not need to become FULL; this is normal.
- ✗
Neighbor 10.0.0.2 is the Backup Designated Router.
Why it's wrong here
The state shows FULL/DR, meaning it is the Designated Router.
- ✗
Both neighbors are in the FULL state.
Why it's wrong here
Neighbor 10.0.0.3 is in 2WAY state.
- ✓
The OSPF adjacencies are functioning normally.
Why this is correct
The states are appropriate for the network type; FULL for DR and 2WAY for DROTHER.
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
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.