- A
A service endpoint on the subnet and a public firewall rule on the SQL server.
Why wrong: Service endpoints keep traffic on the Microsoft backbone, but they do not give the service a private IP in your VNet. A public firewall rule also conflicts with the requirement to avoid the public endpoint.
- B
A private endpoint for Azure SQL Database and a private DNS zone linked to the VNet.
A private endpoint assigns a private IP from the VNet to the Azure SQL resource, which keeps traffic off the public endpoint. Linking the appropriate private DNS zone to the VNet ensures the normal server name resolves to the private IP. This gives private connectivity and keeps application configuration simple.
- C
A network security group rule that denies all public internet traffic to the subnet.
Why wrong: An NSG cannot convert a public endpoint into a private one. It may block some traffic, but it does not provide private IP-based connectivity or DNS resolution.
- D
A NAT gateway on the subnet so the SQL connection uses a private source address.
Why wrong: A NAT gateway affects outbound source translation. It does not create private access to Azure SQL Database or replace the public endpoint with a VNet address.
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 workload in a VNet must connect to Azure SQL Database over a private IP address, and the database must not be reachable through its public endpoint. Users should still connect by using the normal server name. What should you 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 private endpoint for Azure SQL Database and a private DNS zone linked to the VNet.
Option B is correct because a private endpoint assigns Azure SQL Database a private IP address from the VNet, making it accessible over a private connection. By creating a private DNS zone linked to the VNet, the normal server name resolves to that private IP, allowing users to connect without using the public endpoint. This configuration ensures the database is not reachable via its public endpoint while maintaining name-based connectivity.
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 service endpoint on the subnet and a public firewall rule on the SQL server.
Why it's wrong here
Service endpoints keep traffic on the Microsoft backbone, but they do not give the service a private IP in your VNet. A public firewall rule also conflicts with the requirement to avoid the public endpoint.
- ✓
A private endpoint for Azure SQL Database and a private DNS zone linked to the VNet.
Why this is correct
A private endpoint assigns a private IP from the VNet to the Azure SQL resource, which keeps traffic off the public endpoint. Linking the appropriate private DNS zone to the VNet ensures the normal server name resolves to the private IP. This gives private connectivity and keeps application configuration simple.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
A network security group rule that denies all public internet traffic to the subnet.
Why it's wrong here
An NSG cannot convert a public endpoint into a private one. It may block some traffic, but it does not provide private IP-based connectivity or DNS resolution.
- ✗
A NAT gateway on the subnet so the SQL connection uses a private source address.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse service endpoints with private endpoints, assuming a service endpoint alone provides private IP connectivity, when in fact it only provides source network identity and does not remove public endpoint exposure.
Detailed technical explanation
How to think about this question
A private endpoint uses a network interface with a private IP from the VNet subnet, leveraging Azure Private Link to route traffic to the PaaS service over the Microsoft backbone. The private DNS zone (privatelink.database.windows.net) is linked to the VNet to override public DNS resolution, ensuring the server name resolves to the private IP. This setup eliminates exposure to the public internet and avoids the need for public firewall rules, as the service's public endpoint can be disabled entirely.
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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
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 private endpoint for Azure SQL Database and a private DNS zone linked to the VNet. — Option B is correct because a private endpoint assigns Azure SQL Database a private IP address from the VNet, making it accessible over a private connection. By creating a private DNS zone linked to the VNet, the normal server name resolves to that private IP, allowing users to connect without using the public endpoint. This configuration ensures the database is not reachable via its public endpoint while maintaining name-based connectivity.
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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