Question 1hardmultiple choice
Full question →hardmultiple choiceObjective-mapped
An application in a VNet must access an Azure Storage account over a private IP address. Public network access is disabled on the storage account, and the app must resolve the normal blob FQDN to that private address only from within the VNet. What should the administrator configure?
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
Distractor review
A service endpoint on the subnet and a storage account firewall rule for the subnet.
Service endpoints do not create a private IP address and do not change DNS to a private endpoint address.
B
Best answer
A private endpoint for the blob service and a linked private DNS zone for the VNet.
A private endpoint gives the storage service a private IP inside the VNet, which satisfies the private connectivity requirement. Linking the corresponding private DNS zone ensures the standard blob FQDN resolves to that private address for workloads in the VNet. That combination is the normal solution when public access is disabled and applications must keep using the service's standard name.
C
Distractor review
Allow trusted Microsoft services on the storage account and keep the public endpoint enabled.
Trusted Microsoft services is not private VNet connectivity and does not provide a private IP or private DNS resolution.
D
Distractor review
Create a public DNS record that maps the blob FQDN to the storage account's public IP address.
A public record would defeat the requirement for private-only name resolution inside the VNet.
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: A private endpoint for the blob service and a linked private DNS zone for the VNet. — Private endpoints are designed for exactly this pattern: a PaaS service is exposed through a private IP in the consumer VNet, while the public endpoint can remain disabled. However, the application also needs the normal blob hostname to resolve correctly from inside the VNet. That requires a private DNS zone linked to the VNet, so name resolution returns the private endpoint address instead of the public IP. Why others are wrong: A service endpoint keeps using the service’s public endpoint and does not create a private IP. Trusted Microsoft services is a broad exception list and does not satisfy private-only access from a specific VNet. A public DNS record would point clients back to the public address, which contradicts the requirement to use private connectivity and private resolution only inside the VNet.
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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