Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A team has an existing storage account with the public endpoint enabled. They want to allow access only from a specific subnet in a virtual network, but they do not want to create a private endpoint or manage private DNS zones. Which configuration should the administrator use?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
Best answer
Enable a service endpoint for Microsoft.Storage on the subnet and add the subnet to the storage account network rules.
This is the correct pattern when you want to keep using the public endpoint while restricting traffic to a specific subnet. The service endpoint identifies the subnet as trusted, and the storage account firewall can then allow that subnet explicitly. It avoids the overhead of private endpoint DNS management while still reducing exposure.
B
Distractor review
Create a private endpoint and disable the public endpoint.
This would work for private access, but the scenario explicitly says not to create a private endpoint or manage private DNS zones.
C
Distractor review
Assign a SAS token to the subnet so only resources there can connect.
SAS is an authorization token for users or applications, not a subnet-based network control. It cannot restrict access by network location.
D
Distractor review
Use an Azure Policy assignment to block public traffic to the storage account.
Azure Policy can enforce configuration, but it does not create the network path required for subnet-only connectivity. The right control here is storage networking configuration.
Common exam trap
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.
Technical deep dive
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.
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More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
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Question 2
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Question 3
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Question 4
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Question 5
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Question 6
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FAQ
Questions learners often ask
What does this AZ-104 question test?
CIDR notation defines the prefix length.
What is the correct answer to this question?
The correct answer is: Enable a service endpoint for Microsoft.Storage on the subnet and add the subnet to the storage account network rules. — Service endpoints are the correct choice when you want to limit access to a subnet without moving the storage account to a private endpoint model. They keep the service on its public endpoint but let Azure recognize traffic from the specified subnet as allowed when the storage firewall is configured accordingly. This gives network restriction with less DNS complexity than private endpoints. Why others are wrong: Private endpoints are effective but explicitly excluded by the requirement. SAS tokens do not control subnet membership and cannot replace a network rule. Azure Policy can enforce settings, but it does not itself provide the subnet-to-storage connectivity needed for this scenario.
What should I do if I get this AZ-104 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
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