- A
Private endpoint, because it is the only way to allow one subnet.
Why wrong: Private endpoints are not required when the goal is only to restrict access to a subnet without assigning a private IP to the service.
- B
Service endpoint, because it allows the subnet to access the storage service securely over the Azure backbone.
A service endpoint lets you restrict storage access to a specific subnet without creating a private IP for the service in the virtual network.
- C
User-assigned managed identity, because it controls subnet access.
Why wrong: Managed identities are for authentication, not for subnet-based network access control.
- D
Blob soft delete, because it helps restrict where traffic comes from.
Why wrong: Soft delete protects deleted data, but it does not control network access or source subnet restrictions.
Quick Answer
The answer is to enable a service endpoint, because it allows the subnet to access the storage service securely over the Azure backbone without creating a private IP address for the service in the virtual network. A service endpoint extends the virtual network identity to Azure Storage, letting the storage account firewall restrict traffic to that specific subnet while traffic flows over Microsoft’s core network rather than the public internet. On the AZ-104 exam, this scenario tests your understanding of the core difference between service endpoints and private endpoints: service endpoints do not assign a private IP to the PaaS resource, making them the correct choice when the requirement explicitly avoids a private IP. A common trap is confusing this with a private endpoint, which does create a private IP and is used for fully isolating the service into the VNet. Memory tip: “Service endpoint = subnet identity without a private IP; Private endpoint = a private IP for the service itself.”
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 storage account should accept traffic only from one subnet, but the team does not want to create a private IP address for the service in the virtual network. What should they enable?
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
Service endpoint, because it allows the subnet to access the storage service securely over the Azure backbone.
Service endpoints allow a subnet to access Azure PaaS services (like Storage) over the Azure backbone without requiring a private IP address. By enabling a Microsoft.Storage service endpoint on the subnet and configuring the storage account firewall to allow traffic only from that subnet, the team meets the requirement securely and cost-effectively.
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.
- ✗
Private endpoint, because it is the only way to allow one subnet.
Why it's wrong here
Private endpoints are not required when the goal is only to restrict access to a subnet without assigning a private IP to the service.
- ✓
Service endpoint, because it allows the subnet to access the storage service securely over the Azure backbone.
Why this is correct
A service endpoint lets you restrict storage access to a specific subnet without creating a private IP for the service in the virtual network.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
User-assigned managed identity, because it controls subnet access.
Why it's wrong here
Managed identities are for authentication, not for subnet-based network access control.
- ✗
Blob soft delete, because it helps restrict where traffic comes from.
Why it's wrong here
Soft delete protects deleted data, but it does not control network access or source subnet restrictions.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is confusing private endpoints (which assign a private IP) with service endpoints (which do not), leading candidates to incorrectly choose private endpoint when the question explicitly prohibits creating a private IP address.
Detailed technical explanation
How to think about this question
Service endpoints use the Azure backbone to route traffic from the subnet to the storage account, bypassing the public internet while still using the service’s public endpoint. The subnet’s traffic is identified by the source IP address being replaced with the virtual network’s service endpoint prefix, which the storage account firewall evaluates. This approach is ideal when you need subnet-level access without the cost or complexity of a private endpoint, but it does not provide the same private IP isolation as a private endpoint.
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 startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
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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Implement and Manage Virtual Networking practice questions
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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: Service endpoint, because it allows the subnet to access the storage service securely over the Azure backbone. — Service endpoints allow a subnet to access Azure PaaS services (like Storage) over the Azure backbone without requiring a private IP address. By enabling a Microsoft.Storage service endpoint on the subnet and configuring the storage account firewall to allow traffic only from that subnet, the team meets the requirement securely and cost-effectively.
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 →
Same concept, more angles
4 more ways this is tested on AZ-104
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A web app in VNet1 must access a storage account by using a private IP address, and the storage account has public network access disabled. The app resolves the storage FQDN from inside the VNet. What should you deploy?
medium- A.A service endpoint on the subnet so the storage account gets a private IP.
- ✓ B.A private endpoint for the storage account and the required private DNS zone linkage.
- C.A storage account firewall rule that allows the VNet and a public DNS record update.
- D.A SAS token created for the application service principal.
Why B: A private endpoint assigns the storage account a private IP address from the VNet, enabling access via a private IP while public network access is disabled. The required private DNS zone linkage ensures the storage FQDN resolves to that private IP from within the VNet, meeting both requirements.
Variation 2. An application in AppSubnet must access an Azure Storage account over the public endpoint, but only traffic from that subnet should be allowed, and the traffic should stay on the Microsoft backbone. The administrator does not want to create a private IP for the service. Which two actions should be taken? Select two.
hard- ✓ A.Enable a service endpoint for Microsoft.Storage on AppSubnet.
- ✓ B.Configure the storage account firewall to allow AppSubnet.
- C.Create a private endpoint in AppSubnet.
- D.Disable public network access on the storage account.
- E.Assign a public IP address to the storage account.
Why A: Enabling a service endpoint for Microsoft.Storage on AppSubnet (Option A) allows traffic from that subnet to reach the Azure Storage account over the Microsoft backbone, bypassing the public internet. This satisfies the requirement that traffic stays on the Microsoft backbone without needing a private IP for the service.
Variation 3. An existing application in AppSubnet1 must access an Azure Storage account. The team does not want to add a private endpoint or change DNS records, but they do want to allow access only from AppSubnet1. Which configuration should the administrator use?
medium- ✓ A.Enable the Microsoft.Storage service endpoint on AppSubnet1 and restrict the storage account to selected virtual networks.
- B.Create a private endpoint and remove all public network access from the storage account.
- C.Add a network security group rule that allows outbound TCP 443 to the storage account.
- D.Enable peering between AppSubnet1 and the storage account network.
Why A: Option A is correct because enabling the Microsoft.Storage service endpoint on AppSubnet1 allows traffic from that subnet to be routed directly to the Azure Storage service over the Azure backbone network, bypassing the internet. By then restricting the storage account's firewall to 'selected virtual networks' and adding AppSubnet1's virtual network and subnet, access is limited exclusively to that subnet without needing a private endpoint or DNS changes.
Variation 4. An application in a subnet must access an Azure Storage account over a private IP. The storage account must not be reachable through its public endpoint, and access should be limited to that subnet only. Which configuration should the administrator implement?
medium- A.Create a service endpoint for Microsoft.Storage on the subnet and keep the public endpoint enabled.
- ✓ B.Create a private endpoint in the subnet and disable public network access on the storage account.
- C.Use a shared access signature token and leave network settings unchanged.
- D.Associate the storage account with a NAT gateway to control inbound access.
Why B: Option B is correct because a private endpoint assigns a private IP from the subnet to the storage account, effectively bringing the service into the virtual network. Disabling public network access ensures the storage account is only reachable via that private endpoint, meeting the requirement to block public endpoint access and limit access to the specific subnet.
Last reviewed: Jun 11, 2026
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