- A
Broadcast zoning
Why wrong: Broadcast zoning is not a standard zoning type in Fibre Channel.
- B
LUN zoning
Why wrong: LUN zoning is not a standard term; zoning is done at the WWN or port level.
- C
Hard zoning by WWPN
Hard zoning by WWPN ensures that only devices with the specified WWPNs can communicate, regardless of physical port.
- D
Soft zoning by port ID
Why wrong: Soft zoning based on port ID is not persistent across port changes and provides weaker security.
Question 131 of 1,000
350-601 Storage Network Practice Question
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.
A storage administrator is configuring zoning on a Cisco MDS switch. They need to ensure that only the specified WWPNs can communicate, even if a device is moved to a different physical port. Which zoning method should be used?
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
✓
Hard zoning by WWPN
Hard zoning based on WWPN is persistent across port changes, while soft zoning based on port ID is less secure and changes if the device moves.
Key principle: Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Broadcast zoning
Why it's wrong here
Broadcast zoning is not a standard zoning type in Fibre Channel.
- ✗
LUN zoning
Why it's wrong here
LUN zoning is not a standard term; zoning is done at the WWN or port level.
- ✓
Hard zoning by WWPN
Why this is correct
Hard zoning by WWPN ensures that only devices with the specified WWPNs can communicate, regardless of physical port.
Related concept
CIDR notation defines the prefix length.
- ✗
Soft zoning by port ID
Why it's wrong here
Soft zoning based on port ID is not persistent across port changes and provides weaker security.
Common exam traps
Common exam trap: usable hosts are not the same as total addresses
Subnetting questions often tempt you into counting all addresses. In normal IPv4 subnets, the network and broadcast addresses are not usable host addresses.
Detailed technical explanation
How to think about this question
Subnetting questions test whether you can identify the network, broadcast address, usable range, mask and correct subnet. Slow down enough to calculate the block size correctly.
KKey Concepts to Remember
- CIDR notation defines the prefix length.
- Block size helps identify subnet boundaries.
- Network and broadcast addresses are not usable hosts in normal IPv4 subnets.
- The required host count determines the smallest suitable subnet.
TExam Day Tips
- Write the block size before choosing the subnet.
- Check whether the question asks for hosts, subnets or a specific address range.
- Do not confuse /24, /25, /26 and /27 host counts.
Key takeaway
Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.
Real-world example
How this comes up in practice
A network engineer segments a warehouse floor into three subnets: 20 scanners, 5 printers, and 2 management hosts. Picking the wrong mask wastes addresses or leaves too few usable hosts. Exam questions test whether you can apply CIDR notation, calculate block size, and identify the correct usable-host range for a given prefix.
What to study next
Got this wrong? Here's your next step.
Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related 350-601 subnetting questions on CIDR, address ranges, and subnet selection.
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FAQ
Questions learners often ask
What does this 350-601 question test?
Storage Network — This question tests Storage Network — CIDR notation defines the prefix length..
What is the correct answer to this question?
The correct answer is: Hard zoning by WWPN — Hard zoning based on WWPN is persistent across port changes, while soft zoning based on port ID is less secure and changes if the device moves.
What should I do if I get this 350-601 question wrong?
Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related 350-601 subnetting questions on CIDR, address ranges, and subnet selection.
What is the key concept behind this question?
CIDR notation defines the prefix length.
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Last reviewed: Jul 4, 2026
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