- A
show ospf neighbors
Why wrong: Not valid; need 'ip ospf'.
- B
show ip ospf neighbors
Correct command.
- C
show running-config ospf
Why wrong: Shows configuration, not neighbors.
- D
show ip route ospf
Why wrong: Shows OSPF routes.
Question 406 of 1,000
350-601 Network Practice Question
This 350-601 practice question tests your understanding of network. Examine the command output carefully: the correct answer depends on what the output actually shows, not on general recall alone. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which command is used to verify the OSPF neighbor state in NX-OS?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"which command"Why it matters: Tests specific CLI syntax. Recall the exact command and its required context — near-synonyms and partial matches are common distractors.
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 ip ospf neighbors
In NX-OS, the correct command to verify OSPF neighbor state is 'show ip ospf neighbors'. This command displays the OSPF neighbor table, including neighbor ID, priority, state (e.g., FULL, 2WAY), and dead timer. The 'ip' keyword is mandatory in NX-OS to specify the IPv4 address family, distinguishing it from other protocols like OSPFv3 for IPv6.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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 ospf neighbors
Why it's wrong here
Not valid; need 'ip ospf'.
- ✓
show ip ospf neighbors
Why this is correct
Correct command.
Clue confirmation
The clue word "which command" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
show running-config ospf
Why it's wrong here
Shows configuration, not neighbors.
- ✗
show ip route ospf
Why it's wrong here
Shows OSPF routes.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the exact syntax difference between IOS and NX-OS, where NX-OS requires the 'ip' keyword in OSPF commands (e.g., 'show ip ospf neighbors' vs. the IOS-compatible 'show ip ospf neighbor'), and candidates mistakenly use the IOS-style command without the 'ip' keyword.
Trap categories for this question
Command / output trap
Shows configuration, not neighbors.
Detailed technical explanation
How to think about this question
The OSPF neighbor state machine includes states such as Down, Attempt, Init, 2-Way, ExStart, Exchange, Loading, and Full. The 'show ip ospf neighbors' command in NX-OS also shows the 'DR/BDR' designation and the interface on which the neighbor is formed. In real-world scenarios, this command is critical for troubleshooting adjacency issues, such as mismatched MTU, area IDs, or authentication, which can cause neighbors to remain stuck in ExStart or Loading states.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A network engineer at a university connects two campus buildings via a fibre link. Both routers run OSPF, but no adjacency forms — even though both routers can ping each other. The engineer finds one router is in area 0 and the other in area 1. OSPF adjacency requires matching area numbers, hello/dead timers, and network type. IP reachability alone is not enough.
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.
What to study next
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FAQ
Questions learners often ask
What does this 350-601 question test?
Network — This question tests Network — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: show ip ospf neighbors — In NX-OS, the correct command to verify OSPF neighbor state is 'show ip ospf neighbors'. This command displays the OSPF neighbor table, including neighbor ID, priority, state (e.g., FULL, 2WAY), and dead timer. The 'ip' keyword is mandatory in NX-OS to specify the IPv4 address family, distinguishing it from other protocols like OSPFv3 for IPv6.
What should I do if I get this 350-601 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "which command". Tests specific CLI syntax. Recall the exact command and its required context — near-synonyms and partial matches are common distractors.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jul 4, 2026
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