- A
Create a private endpoint and disable public network access on the storage account.
Why wrong: This changes the access model to private IP access instead of keeping the public endpoint available.
- B
Enable a service endpoint on the subnet and add a virtual network rule for that subnet on the storage account firewall.
A service endpoint lets resources in the subnet access the storage account through the service's public endpoint while presenting the subnet's Azure identity to the firewall. By adding a virtual network rule for that subnet, the storage account allows traffic from that subnet and blocks traffic from others. This satisfies the requirement to keep the public endpoint and restrict access to a single subnet.
- C
Place the subnet behind a NAT gateway and use a shared public IP.
Why wrong: A NAT gateway controls outbound internet translation, not authorization to a storage account.
- D
Add a VPN gateway and route storage traffic through the branch office.
Why wrong: A VPN gateway is for hybrid connectivity and does not by itself restrict storage access to one subnet.
Quick Answer
The correct answer is to enable a service endpoint on the subnet and add a virtual network rule for that subnet on the storage account firewall. This configuration works because a service endpoint extends the virtual network’s private address space to the storage account, routing traffic from the subnet over the Azure backbone instead of the public internet, while still keeping the storage account’s public endpoint accessible. The virtual network rule then acts as a firewall filter, explicitly restricting inbound traffic to only that specific subnet, which satisfies the requirement of allowing only that subnet through the public endpoint. On the AZ-104 exam, this scenario tests your understanding of how service endpoints differ from private endpoints—a common trap is confusing the two, as private endpoints remove public access entirely, while service endpoints keep the public endpoint open but locked down by network rules. A helpful memory tip is to think of a service endpoint as a “VIP lane” on the Azure backbone that still uses the public door, but with a bouncer (the virtual network rule) checking IDs from only your subnet.
AZ-104 Implement and Manage Storage Practice Question
This AZ-104 practice question tests your understanding of implement and manage storage. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 team has Windows VMs in a subnet that need to access an Azure Storage account. The storage account should remain reachable through its public endpoint, but only traffic from that one subnet should be allowed. Which configuration best meets the requirement?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"best"Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
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
Enable a service endpoint on the subnet and add a virtual network rule for that subnet on the storage account firewall.
Option B is correct because a service endpoint extends the virtual network private address space to the storage account, allowing traffic from the specified subnet to reach the storage account via the Azure backbone while keeping the public endpoint accessible. By adding a virtual network rule on the storage account firewall, you restrict access to only traffic originating from that subnet, meeting the requirement of allowing only that subnet through the public endpoint.
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.
- ✗
Create a private endpoint and disable public network access on the storage account.
Why it's wrong here
This changes the access model to private IP access instead of keeping the public endpoint available.
- ✓
Enable a service endpoint on the subnet and add a virtual network rule for that subnet on the storage account firewall.
Why this is correct
A service endpoint lets resources in the subnet access the storage account through the service's public endpoint while presenting the subnet's Azure identity to the firewall. By adding a virtual network rule for that subnet, the storage account allows traffic from that subnet and blocks traffic from others. This satisfies the requirement to keep the public endpoint and restrict access to a single subnet.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Place the subnet behind a NAT gateway and use a shared public IP.
- ✗
Add a VPN gateway and route storage traffic through the branch office.
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, thinking that a private endpoint is required to restrict access to a specific subnet, but service endpoints with firewall rules achieve the same goal while keeping the public endpoint accessible.
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, ensuring the source IP seen by the storage account is the subnet's private IP, not a public IP. The virtual network rule on the storage account firewall checks the source virtual network and subnet ID, not the IP address, so it works even if the subnet uses private IPs that are not routable over the internet. In a real-world scenario, this is ideal for scenarios like allowing a specific application tier to access a storage account while keeping the public endpoint available for other services that might need it from other networks.
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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FAQ
Questions learners often ask
What does this AZ-104 question test?
Implement and Manage Storage — This question tests Implement and Manage Storage — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Enable a service endpoint on the subnet and add a virtual network rule for that subnet on the storage account firewall. — Option B is correct because a service endpoint extends the virtual network private address space to the storage account, allowing traffic from the specified subnet to reach the storage account via the Azure backbone while keeping the public endpoint accessible. By adding a virtual network rule on the storage account firewall, you restrict access to only traffic originating from that subnet, meeting the requirement of allowing only that subnet through the public endpoint.
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.
Are there clue words in this question I should notice?
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
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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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