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 allow a subnet to access a storage account only from that subnet, but they do not want to create a private endpoint or change DNS. The storage account should still be reachable through its public endpoint, just not from other networks. What should the administrator configure?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
A service endpoint on the subnet and a storage firewall rule allowing that subnet.
Option C is correct because a service endpoint on the subnet extends the virtual network identity to the storage account, allowing the storage firewall to restrict access to traffic originating from that specific subnet. This ensures the storage account remains reachable via its public endpoint, but only from the configured subnet, without requiring a private endpoint or DNS changes.
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.
✗
A private endpoint for the storage account and a private DNS zone.
Why it's wrong here
This changes access to a private IP and introduces DNS work that the team wants to avoid.
✗
A public IP address for the subnet and a storage account firewall exception.
Why it's wrong here
Subnets do not use public IPs for access control in this scenario.
✓
A service endpoint on the subnet and a storage firewall rule allowing that subnet.
Why this is correct
Service endpoints keep the public endpoint but restrict access based on the VNet or subnet identity.
Related concept
Read the scenario before looking for a memorised answer.
✗
An NSG rule that permits outbound TCP 443 to the storage account.
Why it's wrong here
NSGs allow traffic but do not restrict storage access at the service boundary.
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 only private endpoints can restrict access to a storage account, or they mistakenly think NSG rules can control inbound access to PaaS services like storage accounts.
Trap categories for this question
Scenario analysis trap
Subnets do not use public IPs for access control in this scenario.
Detailed technical explanation
How to think about this question
A service endpoint for Microsoft.Storage on a subnet injects the subnet's virtual network identifier into traffic destined to the storage account, enabling the storage firewall to evaluate rules based on the virtual network and subnet rather than the source public IP. This mechanism uses the Azure backbone network to route traffic, ensuring the storage account's public endpoint is still used but access is restricted to the subnet's traffic. In a real-world scenario, this is ideal for scenarios like a web application subnet that needs to access a storage account for logs or static assets without the overhead of private endpoints.
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-104 question in full detail.
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: A service endpoint on the subnet and a storage firewall rule allowing that subnet. — Option C is correct because a service endpoint on the subnet extends the virtual network identity to the storage account, allowing the storage firewall to restrict access to traffic originating from that specific subnet. This ensures the storage account remains reachable via its public endpoint, but only from the configured subnet, without requiring a private endpoint or DNS changes.
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.
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Question Discussion
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