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300-410 Practice Question: Which TWO commands can be used to verify OSPFv3…
Which TWO commands can be used to verify OSPFv3 interface parameters and troubleshoot adjacency issues? (Choose TWO.)
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
✓
show ipv6 ospf interface
The 'show ipv6 ospf interface' command displays OSPFv3 interface parameters, and 'debug ipv6 ospf hello' can be used to troubleshoot hello packet issues. The other commands are either invalid or for OSPFv2 only.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
show ipv6 ospf interface
Why this is correct
Correct. This command displays OSPFv3 interface parameters such as area, cost, hello interval, dead interval, and neighbor state.
- ✓
debug ipv6 ospf hello
Why this is correct
Correct. This debug command shows hello packet exchanges, which is useful for troubleshooting adjacency formation issues.
- ✗
show ip ospf interface
Why it's wrong here
Incorrect. This command is for OSPFv2, not OSPFv3. For OSPFv3, the 'ipv6' keyword is required.
- ✗
debug ip ospf adj
Why it's wrong here
Incorrect. This debug command is for OSPFv2 adjacency events, not OSPFv3. For OSPFv3, use 'debug ipv6 ospf adj'.
- ✗
show ipv6 ospf database
Why it's wrong here
Incorrect. While this command shows the OSPFv3 link-state database, it does not display interface-specific parameters needed for troubleshooting adjacency issues.
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.
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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.