- A
Enable a service endpoint for Microsoft.Storage on the subnet and keep public network access disabled.
Why wrong: 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
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
Add an inbound NSG rule that allows TCP 443 from the VM to the storage account.
Why wrong: 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
Turn on the trusted Microsoft services exception for the storage account firewall.
Why wrong: The trusted services exception does not provide private DNS resolution or private IP connectivity for a VM in the VNet.
Quick Answer
The correct answer is to create a private endpoint for the blob service and link the private DNS zone to VNet-Prod. This is necessary because when a storage account has public network access disabled, the VM must resolve the storage account name to a private IP address within its own virtual network; the nslookup returning the public endpoint indicates that DNS resolution is still pointing to the public IP, bypassing the private connectivity. On the AZ-104 exam, this scenario tests your understanding of how private endpoint DNS resolution for a storage account works—specifically that a private endpoint assigns a private IP from the subnet, and linking the privatelink.blob.core.windows.net zone to the VNet ensures DNS queries resolve to that private IP. A common trap is assuming disabling public access alone forces private routing, but DNS must be explicitly redirected. Memory tip: think “private endpoint + private zone = private resolution.”
AZ-104 Implement and Manage Storage Practice Question
This AZ-104 practice question tests your understanding of implement and manage storage. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. A key principle to apply: private endpoints assign a private IP to an Azure service within a VNet.. 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 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
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Create a private endpoint for the blob service and link the private DNS zone to VNet-Prod.
Option B is correct because the VM's nslookup returns the public endpoint address, indicating that DNS resolution is not pointing to the private IP of the storage account. Creating a private endpoint for the blob service assigns a private IP from the VNet-Prod subnet to the storage account, and linking a private DNS zone (privatelink.blob.core.windows.net) to VNet-Prod ensures that DNS queries from the VM resolve the storage account name to that private IP, bypassing the public endpoint entirely.
Key principle: Private endpoints assign a private IP to an Azure service within a VNet.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Enable a service endpoint for Microsoft.Storage on the subnet and keep public network access disabled.
Why it's wrong here
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.
- ✓
Create a private endpoint for the blob service and link the private DNS zone to VNet-Prod.
Why this is correct
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.
Related concept
Private endpoints assign a private IP to an Azure service within a VNet.
- ✗
Add an inbound NSG rule that allows TCP 443 from the VM to the storage account.
Why it's wrong here
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.
- ✗
Turn on the trusted Microsoft services exception for the storage account firewall.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse service endpoints (which only provide source IP preservation and routing over the Azure backbone) with private endpoints (which provide a private IP and DNS resolution change), leading them to choose Option A incorrectly.
Detailed technical explanation
How to think about this question
Private endpoints use Azure Private Link to map the storage account to a private IP in the VNet, and the private DNS zone (privatelink.blob.core.windows.net) must be linked to the VNet for automatic resolution. Without the private DNS zone, the VM would still resolve the storage account name to the public IP via public DNS, even though traffic could theoretically be routed privately via the private endpoint IP if the VM used that IP directly. In real-world scenarios, this DNS misconfiguration is a common cause of connectivity failures when migrating from service endpoints to private endpoints.
KKey Concepts to Remember
- Private endpoints assign a private IP to an Azure service within a VNet.
- Private DNS zones are essential for resolving service FQDNs to private IPs.
- Linking a private DNS zone to a VNet enables private resolution for VMs in that VNet.
- Private endpoints allow secure access to Azure services over the Azure backbone, bypassing public internet.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Private endpoints assign a private IP to an Azure service within a VNet.
Real-world example
How this comes up in practice
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
Got this wrong? Here's your next step.
Review private endpoints assign a private IP to an Azure service within a VNet., then practise related AZ-104 questions on the same topic to reinforce the concept.
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FAQ
Questions learners often ask
What does this AZ-104 question test?
Implement and Manage Storage — This question tests Implement and Manage Storage — Private endpoints assign a private IP to an Azure service within a VNet..
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. — Option B is correct because the VM's nslookup returns the public endpoint address, indicating that DNS resolution is not pointing to the private IP of the storage account. Creating a private endpoint for the blob service assigns a private IP from the VNet-Prod subnet to the storage account, and linking a private DNS zone (privatelink.blob.core.windows.net) to VNet-Prod ensures that DNS queries from the VM resolve the storage account name to that private IP, bypassing the public endpoint entirely.
What should I do if I get this AZ-104 question wrong?
Review private endpoints assign a private IP to an Azure service within a VNet., then practise related AZ-104 questions on the same topic to reinforce the concept.
What is the key concept behind this question?
Private endpoints assign a private IP to an Azure service within a VNet.
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Last reviewed: Jun 11, 2026
This AZ-104 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the AZ-104 exam.
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