Question 1hardmultiple choice
Full question →hardmultiple choiceObjective-mapped
A storage account has public network access disabled. A VM in VNet-Prod must reach Blob storage by using the storage account name, but nslookup from the VM still returns the public endpoint address. What should the administrator do?
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
Enable a service endpoint for Microsoft.Storage on the subnet and keep public network access disabled.
Service endpoints do not create a private IP or change DNS resolution to a private address, so they do not fix this name-resolution problem.
B
Best answer
Create a private endpoint for the blob service and link the private DNS zone to VNet-Prod.
A private endpoint gives Blob storage a private IP in the virtual network, and the private DNS zone ensures the storage account name resolves to that private address. Both pieces are required when public access is disabled and clients must connect by name.
C
Distractor review
Add an inbound NSG rule that allows TCP 443 from the VM to the storage account.
NSGs control traffic within the virtual network, but they do not change the storage account's endpoint or the DNS resolution path for the storage name.
D
Distractor review
Turn on the trusted Microsoft services exception for the storage account firewall.
The trusted services exception does not provide private DNS resolution or private IP connectivity for a VM in 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.
Question 1
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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
You need to create a storage account that provides the lowest-cost redundant storage for non-critical data and only needs protection against local disk or server failure within a single datacenter. Which redundancy option should you choose?
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: Create a private endpoint for the blob service and link the private DNS zone to VNet-Prod. — When public network access is disabled, the VM must use a private endpoint to reach the storage service. The private endpoint assigns a private IP inside the VNet, and the associated private DNS zone changes name resolution so the storage account FQDN resolves to that private address. Without both the endpoint and DNS integration, the VM keeps resolving the public endpoint and cannot connect as required. Why others are wrong: Service endpoints only extend VNet identity to the service; they do not create a private IP or alter DNS. NSGs cannot make a public FQDN resolve privately. Trusted services bypass firewall checks for some Microsoft-managed traffic, but they do not help an ordinary VM resolve or reach Blob storage privately.
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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