The answer is to verify that the uplink Fibre Channel ports on the fabric interconnects are configured to allow VSAN 400. When a new VSAN is added in UCS, the vHBA goes down because the physical FC uplink ports act as trunk ports that must explicitly carry the new VSAN; if the VSAN is not added to the allowed list on those uplinks, the fabric interconnect drops all traffic for that VSAN, breaking connectivity to the storage array. This scenario tests your understanding of UCS Fibre Channel VSAN trunking and vHBA state management, a common trap on the Cisco DCCOR 350-601 exam where candidates mistakenly reboot the server or re-zone instead of checking the uplink port VSAN membership. Remember the memory tip: “No VSAN on the uplink means no link for the vHBA”—always verify the FC uplink port’s allowed VSAN list before troubleshooting further.
350-601 Compute Practice Question
This 350-601 practice question tests your understanding of compute. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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.
A financial services company operates a Cisco UCS 6454 Fabric Interconnect cluster with two FI-A and FI-B, connected to multiple UCS B-Series blades. The environment uses UCS Manager 4.2(1a). Recently, the company migrated to a new storage array connected via Fibre Channel. The storage team configured 8 virtual SANs (VSANs) and created a new VSAN 400 for a critical application. After the migration, the application server running on a UCS blade cannot discover the storage LUNs. The server's vHBA is configured correctly with the proper WWPN, and the zone set is active on the SAN switches. The engineer checks the UCS Manager and sees that the vHBA is down. Which action should the engineer take to resolve the issue?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Verify that the uplink Fibre Channel ports on the fabric interconnects are configured to allow VSAN 400.
Option B is correct because the vHBA being down indicates no Fibre Channel connectivity. The most likely cause is that the FC uplink ports on the fabric interconnects are not configured to allow VSAN 400. Option A is not appropriate because rebooting the server does not address the underlying connectivity issue. Option C is unnecessary and would require re-zoning. Option D is an escalation step not justified without evidence of a bug.
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.
✗
Upgrade UCS Manager to the latest version to fix a known bug.
Why it's wrong here
No indication of a bug; more likely a configuration error.
✓
Verify that the uplink Fibre Channel ports on the fabric interconnects are configured to allow VSAN 400.
Why this is correct
The FC uplink ports must be members of the VSAN for traffic to pass.
Related concept
Read the scenario before looking for a memorised answer.
✗
Reboot the server blade to force re-discovery of the storage.
Why it's wrong here
Rebooting does not fix the missing VSAN configuration on uplinks.
✗
Recreate the vHBA in the service profile with a different WWPN.
Why it's wrong here
The vHBA is configured correctly; changing WWPN complicates zoning.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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 practitioner preparing for the 350-601 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which 350-601 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Compute — This question tests Compute — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Verify that the uplink Fibre Channel ports on the fabric interconnects are configured to allow VSAN 400. — Option B is correct because the vHBA being down indicates no Fibre Channel connectivity. The most likely cause is that the FC uplink ports on the fabric interconnects are not configured to allow VSAN 400. Option A is not appropriate because rebooting the server does not address the underlying connectivity issue. Option C is unnecessary and would require re-zoning. Option D is an escalation step not justified without evidence of a bug.
What should I do if I get this 350-601 question wrong?
Identify which 350-601 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.