The answer is to use a service endpoint for Microsoft.Storage combined with storage firewall rules. This configuration is correct because a service endpoint extends your virtual network’s private address space and identity to Azure Storage over the Microsoft backbone, allowing you to restrict the storage account to a specific subnet while keeping the public endpoint firewall locked down to deny all other traffic. On the AZ-500 exam, this scenario tests your understanding of network segmentation and the difference between service endpoints and Private Link—a common trap is confusing the two, but remember that service endpoints work with the public endpoint’s firewall rules, whereas Private Link uses a private IP. A quick memory tip: “Service endpoint + firewall rule = subnet-only access; Private Link = private IP only.”
AZ-500 Secure networking Practice Question
This AZ-500 practice question tests your understanding of secure 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 be reachable only from a specific subnet over the Microsoft backbone, while keeping the public endpoint firewall restricted. Which feature should be used?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Service endpoint for Microsoft.Storage with storage firewall rules
A service endpoint for Microsoft.Storage extends your virtual network private address space and the identity of your VNet to the Azure Storage service over the Microsoft backbone. By combining the service endpoint with a storage firewall rule that restricts access to only that specific subnet, you ensure the storage account is reachable only from that subnet while keeping the public endpoint firewall restricted to deny all other traffic.
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.
✗
Application Security Group
Why it's wrong here
This does not meet the stated requirement as directly as the correct option.
✗
Azure Bastion
Why it's wrong here
This does not meet the stated requirement as directly as the correct option.
✓
Service endpoint for Microsoft.Storage with storage firewall rules
Why this is correct
Correct for the stated requirement.
Related concept
Read the scenario before looking for a memorised answer.
✗
Public IP prefix
Why it's wrong here
This does not meet the stated requirement as directly as the correct option.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse service endpoints with private endpoints, but the question explicitly requires keeping the public endpoint firewall restricted, which is exactly what service endpoints support by allowing selective subnet access through firewall rules without creating a private IP connection.
Detailed technical explanation
How to think about this question
When you enable a service endpoint for Microsoft.Storage on a subnet, Azure adds the subnet's virtual network ID to the storage account's firewall allow list, and traffic from that subnet to the storage account is routed directly over the Azure backbone network rather than through the internet. The storage firewall rules then evaluate the source IP or virtual network identity; if the request comes from the allowed subnet, it is permitted even if the public endpoint firewall is otherwise set to deny all. This setup is commonly used in hub-and-spoke architectures where a central storage account must be accessed only from a specific application subnet.
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-500 question in full detail.
Secure networking — This question tests Secure networking — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Service endpoint for Microsoft.Storage with storage firewall rules — A service endpoint for Microsoft.Storage extends your virtual network private address space and the identity of your VNet to the Azure Storage service over the Microsoft backbone. By combining the service endpoint with a storage firewall rule that restricts access to only that specific subnet, you ensure the storage account is reachable only from that subnet while keeping the public endpoint firewall restricted to deny all other traffic.
What should I do if I get this AZ-500 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.
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Question Discussion
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