- A
A service endpoint for Microsoft.Storage on the subnet.
A service endpoint extends the VNet identity to the supported Azure service and keeps traffic on the Microsoft backbone. It does not create a private IP or require DNS changes, which matches this requirement. The storage account can remain on its public endpoint while still accepting traffic only from the allowed subnet.
- B
A private endpoint and a private DNS zone.
Why wrong: A private endpoint would provide private IP access, but the question explicitly says not to create one. It also typically requires DNS changes to resolve the service name privately.
- C
A NAT gateway attached to the subnet.
Why wrong: A NAT gateway controls outbound source IP translation. It does not provide service-specific connectivity over the Microsoft backbone or restrict access to the storage account.
- D
A VPN gateway connection to the storage account resource group.
Why wrong: VPN gateways create network-to-network or user-to-network tunnels. They are not the Azure feature used to access a PaaS storage account over the backbone without private endpointing.
AZ-104 Implement and Manage Virtual Networking Practice Question
This AZ-104 practice question tests your understanding of implement and manage virtual networking. 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. 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 VM in a subnet must access an Azure Storage account without creating a private endpoint. The organization is fine with the storage account remaining on its public endpoint, but traffic should stay on the Azure backbone rather than the public internet. Which feature should you use?
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
A service endpoint for Microsoft.Storage on the subnet.
A service endpoint for Microsoft.Storage on the subnet extends the virtual network identity to the storage account, allowing traffic from the subnet to the storage account's public endpoint to traverse the Azure backbone network instead of the public internet. This meets the requirement of keeping traffic on the Azure backbone without creating a private endpoint, as service endpoints use the public endpoint but route traffic through Microsoft's network.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
A service endpoint for Microsoft.Storage on the subnet.
Why this is correct
A service endpoint extends the VNet identity to the supported Azure service and keeps traffic on the Microsoft backbone. It does not create a private IP or require DNS changes, which matches this requirement. The storage account can remain on its public endpoint while still accepting traffic only from the allowed subnet.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
A private endpoint and a private DNS zone.
Why it's wrong here
A private endpoint would provide private IP access, but the question explicitly says not to create one. It also typically requires DNS changes to resolve the service name privately.
- ✗
A NAT gateway attached to the subnet.
- ✗
A VPN gateway connection to the storage account resource group.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse service endpoints with private endpoints, assuming both require private IPs, but service endpoints keep the public endpoint while routing traffic over the Azure backbone.
Detailed technical explanation
How to think about this question
Service endpoints work by adding the subnet's virtual network ID to the storage account's firewall rules, enabling the storage account to accept traffic from that subnet as trusted. The traffic flows over the Azure backbone because the destination IP (the storage account's public endpoint) is resolved via Azure's internal routing, which uses BGP to prefer the Microsoft network over the internet. A subtle behavior is that service endpoints do not provide private IP connectivity; the storage account still uses its public DNS name, but the route is optimized.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
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
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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.
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Implement and Manage Virtual Networking — study guide chapter
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FAQ
Questions learners often ask
What does this AZ-104 question test?
Implement and Manage Virtual Networking — This question tests Implement and Manage Virtual Networking — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: A service endpoint for Microsoft.Storage on the subnet. — A service endpoint for Microsoft.Storage on the subnet extends the virtual network identity to the storage account, allowing traffic from the subnet to the storage account's public endpoint to traverse the Azure backbone network instead of the public internet. This meets the requirement of keeping traffic on the Azure backbone without creating a private endpoint, as service endpoints use the public endpoint but route traffic through Microsoft's network.
What should I do if I get this AZ-104 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
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Last reviewed: Jun 11, 2026
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