- A
Create a private endpoint and disable public network access.
Why wrong: A private endpoint would give the service a private IP, which is more restrictive than the requirement and changes how DNS works. The team explicitly does not need a private IP. This option solves a different problem than the one described.
- B
Enable a service endpoint on the subnet and allow that subnet in the storage account firewall.
A service endpoint extends the subnet identity to the storage service while traffic still reaches the public endpoint. Adding the subnet to the storage firewall then limits access to that subnet. This matches the requirement exactly because the team does not need a private IP, only subnet-restricted access.
- C
Generate a user delegation SAS token and distribute it only to the subnet.
Why wrong: A SAS token controls access at the application level, not by subnet. It cannot enforce network-based restriction to a specific Azure subnet. This solution would not meet the requirement for network control through the storage firewall.
- D
Change the redundancy setting to ZRS and enable soft delete.
Why wrong: Redundancy and deletion protection do not control which subnet can connect to the account. These settings improve durability or recovery, but they do not restrict network access. The request is specifically about network filtering, not resiliency features.
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 wants to restrict a storage account so only one Azure subnet can reach it. They do not need a private IP address, and they are fine with the storage account still using its public endpoint. Which configuration should the administrator 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
Enable a service endpoint on the subnet and allow that subnet in the storage account firewall.
Option B is correct because a service endpoint extends the virtual network identity to the storage account over the public endpoint, allowing the administrator to restrict access to only traffic originating from that specific subnet via the storage account firewall. This meets the requirement of using the public endpoint while limiting access to a single Azure subnet without needing a private IP address.
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.
Why it's wrong here
A private endpoint would give the service a private IP, which is more restrictive than the requirement and changes how DNS works. The team explicitly does not need a private IP. This option solves a different problem than the one described.
- ✓
Enable a service endpoint on the subnet and allow that subnet in the storage account firewall.
Why this is correct
A service endpoint extends the subnet identity to the storage service while traffic still reaches the public endpoint. Adding the subnet to the storage firewall then limits access to that subnet. This matches the requirement exactly because the team does not need a private IP, only subnet-restricted access.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Generate a user delegation SAS token and distribute it only to the subnet.
Why it's wrong here
A SAS token controls access at the application level, not by subnet. It cannot enforce network-based restriction to a specific Azure subnet. This solution would not meet the requirement for network control through the storage firewall.
- ✗
Change the redundancy setting to ZRS and enable soft delete.
Why it's wrong here
Redundancy and deletion protection do not control which subnet can connect to the account. These settings improve durability or recovery, but they do not restrict network access. The request is specifically about network filtering, not resiliency features.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse private endpoints (which require a private IP and can disable the public endpoint) with service endpoints (which keep the public endpoint but restrict access by subnet), leading them to incorrectly choose Option A.
Detailed technical explanation
How to think about this question
A service endpoint for Azure Storage uses the Azure backbone network to route traffic from the subnet to the storage account, ensuring the source IP seen by the storage account is the subnet's virtual network address rather than a public IP. The storage account firewall then evaluates this source network identity against the allowed subnet rule, effectively blocking all other traffic even though the public endpoint remains accessible. In practice, this is often used for scenarios like locking down a storage account to only allow access from a specific application tier subnet while still enabling internet-based management access via the public endpoint if needed.
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
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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 allow that subnet in the storage account firewall. — Option B is correct because a service endpoint extends the virtual network identity to the storage account over the public endpoint, allowing the administrator to restrict access to only traffic originating from that specific subnet via the storage account firewall. This meets the requirement of using the public endpoint while limiting access to a single Azure subnet without needing a private IP address.
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
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Last reviewed: Jun 11, 2026
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