- A
Create a private endpoint and disable public network access.
Why wrong: A private endpoint gives the storage service a private IP in the VNet and usually requires private DNS planning. That conflicts with the stated requirement to avoid a private IP and avoid managing private DNS zones.
- B
Enable a service endpoint on the subnet and restrict the storage firewall to that subnet.
A service endpoint allows the subnet to access the storage account over the Azure backbone while the storage account still uses its public FQDN and does not require a private IP in the VNet. Because the administrator also wants to avoid private DNS zone management, this is the best fit. The storage firewall can then be restricted to the specific subnet.
- C
Peer the subnet to a dedicated storage VNet and route traffic through peering.
Why wrong: VNet peering connects virtual networks to each other. It does not restrict storage account access by itself and does not create the storage-specific access control behavior described here.
- D
Assign a route table with a host route to the storage account.
Why wrong: Route tables are used for IP forwarding decisions, not for controlling Azure Storage authorization or service access. They cannot replace storage firewall rules or service endpoints.
AZ-104 Implement and Manage Storage Practice Question
This AZ-104 practice question tests your understanding of implement and manage storage. 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.
An administrator wants a storage account to be accessible only from one subnet. The storage account should still use its public FQDN, the team does not want a private IP address in the VNet, and they do not want to manage private DNS zones. Which solution should be used?
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 restrict the storage firewall to that subnet.
Option B is correct because a service endpoint allows the storage account to be accessed from a specific subnet while still using the public FQDN. By enabling a service endpoint on the subnet and configuring the storage firewall to allow traffic only from that subnet, the administrator meets all requirements: no private IP, no private DNS zones, and access restricted to one subnet.
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 gives the storage service a private IP in the VNet and usually requires private DNS planning. That conflicts with the stated requirement to avoid a private IP and avoid managing private DNS zones.
When this WOULD be correct
When the requirement is to ensure the storage account is completely isolated from the public internet and accessible only via a private IP address within the VNet, and the organization is willing to manage private DNS zones.
- ✓
Enable a service endpoint on the subnet and restrict the storage firewall to that subnet.
Why this is correct
A service endpoint allows the subnet to access the storage account over the Azure backbone while the storage account still uses its public FQDN and does not require a private IP in the VNet. Because the administrator also wants to avoid private DNS zone management, this is the best fit. The storage firewall can then be restricted to the specific subnet.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Peer the subnet to a dedicated storage VNet and route traffic through peering.
Why it's wrong here
VNet peering connects virtual networks to each other. It does not restrict storage account access by itself and does not create the storage-specific access control behavior described here.
When this WOULD be correct
A question where two VNets need to communicate privately, and the storage account is in a dedicated VNet with a service endpoint or private endpoint, but the requirement is to route traffic through VNet peering without using the public internet.
- ✗
Assign a route table with a host route to the storage account.
Why it's wrong here
Route tables are used for IP forwarding decisions, not for controlling Azure Storage authorization or service access. They cannot replace storage firewall rules or service endpoints.
When this WOULD be correct
This option would be correct in a scenario where the goal is to force all traffic destined for the storage account through a network virtual appliance (NVA) for inspection or logging, while still allowing access from any subnet. The question would specify that access control is not needed, only traffic routing.
Option-by-option analysis
Why each answer is right or wrong
Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The AZ-104 exam frequently reuses these exact scenarios with slightly different constraints.
✓Enable a service endpoint on the subnet and restrict the storage firewall to that subnet.Correct answer▾
Why this is correct
A service endpoint allows the subnet to access the storage account over the Azure backbone while the storage account still uses its public FQDN and does not require a private IP in the VNet. Because the administrator also wants to avoid private DNS zone management, this is the best fit. The storage firewall can then be restricted to the specific subnet.
✗Create a private endpoint and disable public network access.Wrong answer — click to see why▾
Why this is wrong here
A private endpoint uses a private IP address in the VNet, which contradicts the requirement to avoid private IP addresses and manage private DNS zones.
★ When this WOULD be the correct answer
When the requirement is to ensure the storage account is completely isolated from the public internet and accessible only via a private IP address within the VNet, and the organization is willing to manage private DNS zones.
Why candidates choose this
Candidates may think private endpoint is the only way to restrict access to a subnet, overlooking that service endpoints can achieve subnet-level access without private IPs.
✗Peer the subnet to a dedicated storage VNet and route traffic through peering.Wrong answer — click to see why▾
Why this is wrong here
VNet peering does not restrict access to a storage account by subnet; it connects VNets but does not provide subnet-level network rules. The storage account would still be publicly accessible unless additional firewall rules are applied, and the scenario requires using the public FQDN without private IPs or DNS zones.
★ When this WOULD be the correct answer
A question where two VNets need to communicate privately, and the storage account is in a dedicated VNet with a service endpoint or private endpoint, but the requirement is to route traffic through VNet peering without using the public internet.
Why candidates choose this
Candidates may think VNet peering can restrict access to a specific subnet, but peering is for connecting VNets, not for subnet-level access control. They might confuse peering with service endpoints or private endpoints.
✗Assign a route table with a host route to the storage account.Wrong answer — click to see why▾
Why this is wrong here
Assigning a route table with a host route to the storage account does not restrict access to a specific subnet; it only influences network traffic routing. The storage firewall and service endpoints are required to limit access to a subnet, and a host route alone does not provide access control.
★ When this WOULD be the correct answer
This option would be correct in a scenario where the goal is to force all traffic destined for the storage account through a network virtual appliance (NVA) for inspection or logging, while still allowing access from any subnet. The question would specify that access control is not needed, only traffic routing.
Why candidates choose this
Candidates may think that a route table with a host route can restrict access by directing traffic, but they confuse routing with access control. The term 'host route' might be misinterpreted as a way to limit access to a specific host.
Analysis generated from the official AZ-104blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
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, assuming that only private endpoints can restrict network access, but service endpoints combined with firewall rules achieve the same restriction without changing the endpoint type or requiring DNS management.
Detailed technical explanation
How to think about this question
Service endpoints extend the VNet identity to the Azure service, allowing the storage firewall to filter traffic based on the source subnet's virtual network ID. This works by adding the subnet's public IP prefix to the storage firewall's allow list, but the traffic still traverses the Azure backbone network using the public endpoint. A common real-world scenario is when an organization wants to secure storage access from a specific application tier without incurring the cost or complexity of private endpoints and DNS management.
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.
Visual reference
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 restrict the storage firewall to that subnet. — Option B is correct because a service endpoint allows the storage account to be accessed from a specific subnet while still using the public FQDN. By enabling a service endpoint on the subnet and configuring the storage firewall to allow traffic only from that subnet, the administrator meets all requirements: no private IP, no private DNS zones, and access restricted to one subnet.
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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