This 350-601 practice question tests your understanding of storage network. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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.
An engineer needs to design a resilient Fibre Channel SAN that eliminates single points of failure between two MDS switches and a storage array with two controllers. What is the minimum number of FC port channels required to achieve this goal?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "minimum / minimize"
Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
Three
Why wrong: Unnecessary; two suffices.
Two
Two port channels allow each controller to connect to both switches.
One
Why wrong: One port channel would connect only one controller to only one switch.
Four
Why wrong: Overkill; two is sufficient for redundancy.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Two
For redundancy, each storage controller connects to both switches. Two port channels (each from a controller to a switch) are needed. Option A (1) provides only one link per controller. Option C (3) and D (4) are overkill. Option B is correct.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Three
Why it's wrong here
Unnecessary; two suffices.
Two
Why this is correct
Two port channels allow each controller to connect to both switches.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Static NAT maps one inside address to one outside address.
One
Why it's wrong here
One port channel would connect only one controller to only one switch.
Four
Why it's wrong here
Overkill; two is sufficient for redundancy.
Common exam traps
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
What to study next
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related 350-601 NAT questions on configuration and troubleshooting.
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FAQ
Storage Network — This question tests Storage Network — Static NAT maps one inside address to one outside address..
The correct answer is: Two — For redundancy, each storage controller connects to both switches. Two port channels (each from a controller to a switch) are needed. Option A (1) provides only one link per controller. Option C (3) and D (4) are overkill. Option B is correct.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related 350-601 NAT questions on configuration and troubleshooting.
Yes — watch for: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
Static NAT maps one inside address to one outside address.
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Last reviewed: Jun 24, 2026
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