350-601 Storage Network Practice Question
An FCoE link between a Nexus switch and a storage array fails to come up. The switch is configured as an FCF. The administrator runs 'show interface ethernet 1/1' and sees the interface is up/up. Which command will most likely reveal the root cause?
⚠ Common exam trap
Cisco often tests the distinction between physical interface status (up/up) and FCoE virtual link status, leading candidates to incorrectly focus on Layer 1 or Layer 2 issues rather than the FCoE control plane (FIP/FLOGI).
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 fcoe database
The FCoE link failing to come up despite the interface being up/up indicates a Layer 2 or FCoE-specific issue, not a physical or basic connectivity problem. The 'show fcoe database' command displays the FCoE login information and the state of virtual links (VFCs) mapped to the physical interface, which is essential for diagnosing why the FCF-to-storage array FCoE session is not established.
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 vlan id 100
Why it's wrong here
Incorrect: VLAN existence is necessary but not sufficient.
- ✗
show lldp neighbors interface ethernet 1/1
Why it's wrong here
Incorrect: LLDP neighbor shows device but not FCoE status.
- ✓
show fcoe database
Why this is correct
Correct: Shows FCoE session and VLAN status.
- ✗
show spanning-tree interface ethernet 1/1
Why it's wrong here
Incorrect: Spanning tree does not affect FCoE.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 350-601 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 350-601 exam.