- A
A private endpoint for the storage account
Why wrong: A private endpoint creates a private IP and usually requires private DNS configuration.
- B
A service endpoint on the subnet and a storage firewall rule for that subnet
A service endpoint keeps the public endpoint in place while extending the subnet's identity to the storage service. Combined with a storage firewall rule that allows only that subnet, it restricts access without assigning a private IP or requiring private DNS management. This exactly matches the stated design goals.
- C
An NSG rule that allows TCP 443 to the storage account
Why wrong: An NSG cannot grant access to a PaaS storage account by itself, because storage authorization is handled separately.
- D
An application security group tied to the storage account
Why wrong: Application security groups are for grouping virtual machines, not for controlling storage account network access.
Quick Answer
The answer is to configure a service endpoint on the subnet and a storage firewall rule for that subnet. This combination is correct because a service endpoint extends the virtual network’s identity to the storage account over the Microsoft backbone, allowing the storage account to recognize traffic from that specific subnet without needing a private IP address. The storage firewall rule then explicitly restricts access to only that subnet’s traffic, while the public FQDN is retained, eliminating the need to manage private DNS zones. On the AZ-104 exam, this scenario tests your understanding of when to use service endpoints versus Private Link—a common trap is choosing Private Link, which would introduce private IPs and DNS management. Remember that service endpoints keep the public endpoint but lock it down by subnet, making them the lightweight, no-fuss option for subnet-only restrictions. Memory tip: “Service Endpoint = Public door, Subnet-only key.”
AZ-104 Implement and Manage Virtual Networking Practice Question
This AZ-104 practice question tests your understanding of implement and manage virtual networking. 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 storage account must be reachable only from workloads in one Azure subnet. The team wants to keep using the storage account's public FQDN, avoid creating a private IP address in the virtual network, and avoid managing private DNS zones. What should the administrator configure?
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
A service endpoint on the subnet and a storage firewall rule for that subnet
A service endpoint on the subnet and a storage firewall rule for that subnet is correct because it allows the storage account to be reachable only from workloads in one Azure subnet while still using the storage account's public FQDN. Service endpoints extend the virtual network identity to the storage account over the Microsoft backbone, and the firewall rule restricts access to that specific subnet. This avoids creating a private IP address in the virtual network and eliminates the need to manage private DNS zones, as the public endpoint is retained.
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
Why it's wrong here
A private endpoint creates a private IP and usually requires private DNS configuration.
- ✓
A service endpoint on the subnet and a storage firewall rule for that subnet
Why this is correct
A service endpoint keeps the public endpoint in place while extending the subnet's identity to the storage service. Combined with a storage firewall rule that allows only that subnet, it restricts access without assigning a private IP or requiring private DNS management. This exactly matches the stated design goals.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
An NSG rule that allows TCP 443 to the storage account
Why it's wrong here
An NSG cannot grant access to a PaaS storage account by itself, because storage authorization is handled separately.
- ✗
An application security group tied to the storage account
Why it's wrong here
Application security groups are for grouping virtual machines, not for controlling storage account network access.
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 access to a single subnet, but service endpoints combined with a storage firewall rule achieve the same goal without private IPs or DNS management.
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, bypassing the public internet, and the storage firewall rule with the subnet's virtual network ID ensures only traffic from that subnet is accepted. Under the hood, the service endpoint adds a route to the subnet's route table with a next hop type of 'VirtualNetworkServiceEndpoint', and the storage firewall uses the subnet's resource ID for filtering. In a real-world scenario, this is ideal for workloads like Azure VMs that need to access storage without the complexity of private endpoints, but note that service endpoints do not provide private IP connectivity and traffic still traverses the Microsoft backbone using the public endpoint.
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 Virtual Networking — This question tests Implement and Manage Virtual Networking — 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 for that subnet — A service endpoint on the subnet and a storage firewall rule for that subnet is correct because it allows the storage account to be reachable only from workloads in one Azure subnet while still using the storage account's public FQDN. Service endpoints extend the virtual network identity to the storage account over the Microsoft backbone, and the firewall rule restricts access to that specific subnet. This avoids creating a private IP address in the virtual network and eliminates the need to manage private DNS zones, as the public endpoint is retained.
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
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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