The answer is to disassociate service profiles from the blades, upgrade the Fabric Interconnect, then re-associate the service profiles. This is correct because disassociating the service profile detaches the logical UCS management configuration from the physical hardware, allowing the single fabric interconnect to be upgraded without disrupting the running workloads; the blades continue to run their OS and applications independently, and re-association restores management connectivity without requiring a reboot. On the Cisco DCCOR 350-601 exam, this scenario tests your understanding of stateless computing and the separation of the data plane from the management plane in a single fabric interconnect environment—a common trap is assuming you must shut down the blades or migrate VMs, which is unnecessary since the fabric interconnect only handles management traffic. A useful memory tip: think of the service profile as a “software identity card” that you temporarily remove from the blade, upgrade the hardware, then hand the card back—no reboot, no disruption.
350-601 Compute Practice Question
This 350-601 practice question tests your understanding of compute. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 company recently deployed Cisco UCS B-Series blades with a single Fabric Interconnect. During a maintenance window, the Fabric Interconnect must be upgraded. Which action ensures minimal disruption to running workloads?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Disassociate service profiles from blades, upgrade the Fabric Interconnect, then re-associate the service profiles.
Option A is correct because disassociating service profiles from the blades detaches the logical configuration from the physical hardware, allowing the single Fabric Interconnect to be upgraded without affecting the running workloads. The blades continue to run their current operating system and applications, and once the upgrade is complete, re-associating the service profiles restores management connectivity without requiring a reboot or workload interruption.
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.
✓
Disassociate service profiles from blades, upgrade the Fabric Interconnect, then re-associate the service profiles.
Why this is correct
Blades continue running; only management connectivity is lost temporarily.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use the UCS Manager GUI to migrate all service profiles to a second Fabric Interconnect.
Why it's wrong here
With a single FI, there is no second FI to migrate to.
✗
Shut down all blades gracefully, upgrade the Fabric Interconnect, then power on blades.
Why it's wrong here
This causes service disruption.
✗
Change the boot order of blades to boot from NFS image, then upgrade FI.
Why it's wrong here
Unrelated to minimizing disruption.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the misconception that shutting down blades or migrating to a second Fabric Interconnect is required, but the key is that disassociating service profiles decouples management from the running workload, enabling a non-disruptive upgrade on a single Fabric Interconnect.
Detailed technical explanation
How to think about this question
When a service profile is disassociated from a blade, the blade retains its last booted operating system and continues to run independently of UCS Manager. The Fabric Interconnect upgrade can then be performed using a standard firmware upgrade process (e.g., via CLI or GUI), and after the upgrade, re-associating the service profile re-establishes the management channel without requiring a blade reboot. This approach leverages the stateless nature of UCS, where the service profile holds all identity and policy information, allowing the blade to be re-associated seamlessly.
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 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 exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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: Disassociate service profiles from blades, upgrade the Fabric Interconnect, then re-associate the service profiles. — Option A is correct because disassociating service profiles from the blades detaches the logical configuration from the physical hardware, allowing the single Fabric Interconnect to be upgraded without affecting the running workloads. The blades continue to run their current operating system and applications, and once the upgrade is complete, re-associating the service profiles restores management connectivity without requiring a reboot or workload interruption.
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.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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