- A
A private endpoint for the SQL server and a private DNS zone linked to AppSubnet.
Why wrong: Private endpoints place the SQL service behind a private IP in your virtual network and typically require DNS updates so the app resolves the name to the private address. That directly conflicts with the requirement to avoid private IPs and DNS changes.
- B
Enable the Microsoft.Sql service endpoint on AppSubnet and add a virtual network rule on the SQL server.
A service endpoint keeps Azure SQL reachable through its public endpoint while allowing access only from the authorized subnet. The subnet must have the Microsoft.Sql service endpoint enabled, and the SQL server must have a virtual network rule that permits AppSubnet. This satisfies the requirement to avoid private IPs and DNS changes while still restricting access to the subnet.
- C
Create an NSG rule on AppSubnet to allow outbound TCP 1433 traffic to the SQL server's public IP address.
Why wrong: An NSG can filter traffic at the subnet or NIC level, but Azure SQL authorization is not granted by an NSG alone. Azure SQL requires either firewall rules or a virtual network rule tied to a service endpoint for subnet-based access control.
- D
Publish the AppSubnet public IP address range in the SQL server firewall as an allow list.
Why wrong: A subnet's private address range is not a valid public IP allow list, and this approach does not provide subnet-based authorization. The correct control for this scenario is a service endpoint plus a virtual network rule.
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 finance web app in AppSubnet must connect to Azure SQL Database over the service's public endpoint. Only AppSubnet should be allowed, and the security team does not want to deploy any private IPs or change DNS. 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
Enable the Microsoft.Sql service endpoint on AppSubnet and add a virtual network rule on the SQL server.
Option B is correct because enabling the Microsoft.Sql service endpoint on AppSubnet allows traffic from that subnet to reach Azure SQL Database's public endpoint without requiring public IP addresses or DNS changes. Adding a virtual network rule on the SQL server restricts access exclusively to that subnet, meeting the security requirement without deploying private IPs.
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 SQL server and a private DNS zone linked to AppSubnet.
- ✓
Enable the Microsoft.Sql service endpoint on AppSubnet and add a virtual network rule on the SQL server.
Why this is correct
A service endpoint keeps Azure SQL reachable through its public endpoint while allowing access only from the authorized subnet. The subnet must have the Microsoft.Sql service endpoint enabled, and the SQL server must have a virtual network rule that permits AppSubnet. This satisfies the requirement to avoid private IPs and DNS changes while still restricting access to the subnet.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Create an NSG rule on AppSubnet to allow outbound TCP 1433 traffic to the SQL server's public IP address.
Why it's wrong here
An NSG can filter traffic at the subnet or NIC level, but Azure SQL authorization is not granted by an NSG alone. Azure SQL requires either firewall rules or a virtual network rule tied to a service endpoint for subnet-based access control.
- ✗
Publish the AppSubnet public IP address range in the SQL server firewall as an allow list.
Why it's wrong here
A subnet's private address range is not a valid public IP allow list, and this approach does not provide subnet-based authorization. The correct control for this scenario is a service endpoint plus a virtual network rule.
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 private IPs are required for secure connectivity, or they mistakenly think NSG rules alone can restrict access to Azure SQL Database without considering the SQL server firewall.
Trap categories for this question
Scenario analysis trap
A subnet's private address range is not a valid public IP allow list, and this approach does not provide subnet-based authorization. The correct control for this scenario is a service endpoint plus a virtual network rule.
Detailed technical explanation
How to think about this question
Service endpoints extend the virtual network identity to Azure services, allowing traffic from the subnet to the service's public endpoint over the Azure backbone network without using public IPs. The virtual network rule on the SQL server acts as a firewall rule that permits traffic only from the specified subnet, effectively bypassing the need for public IP-based firewall rules. This approach is ideal for scenarios where private endpoints are not desired due to cost or complexity, but secure, subnet-restricted access is required.
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.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
- →
Implement and Manage Storage — study guide chapter
Learn the concepts, then practise the questions
- →
Implement and Manage Storage practice questions
Targeted practice on this topic area only
- →
All AZ-104 questions
1,170 questions across all exam domains
- →
AZ-104 study guide
Full concept coverage aligned to exam objectives
- →
AZ-104 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related AZ-104 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Manage Azure Identities and Governance practice questions
Practise AZ-104 questions linked to Manage Azure Identities and Governance.
Implement and Manage Storage practice questions
Practise AZ-104 questions linked to Implement and Manage Storage.
Deploy and Manage Azure Compute practice questions
Practise AZ-104 questions linked to Deploy and Manage Azure Compute.
Implement and Manage Virtual Networking practice questions
Practise AZ-104 questions linked to Implement and Manage Virtual Networking.
Monitor and Maintain Azure Resources practice questions
Practise AZ-104 questions linked to Monitor and Maintain Azure Resources.
AZ-104 Azure RBAC practice questions
Practise AZ-104 questions linked to AZ-104 Azure RBAC.
AZ-104 storage account practice questions
Practise AZ-104 questions linked to AZ-104 storage account.
AZ-104 virtual network practice questions
Practise AZ-104 questions linked to AZ-104 virtual network.
AZ-104 NSG practice questions
Practise AZ-104 questions linked to AZ-104 NSG.
AZ-104 Azure Monitor practice questions
Practise AZ-104 questions linked to AZ-104 Azure Monitor.
AZ-104 backup practice questions
Practise AZ-104 questions linked to AZ-104 backup.
AZ-104 managed identity practice questions
Practise AZ-104 questions linked to AZ-104 managed identity.
Practice this exam
Start a free AZ-104 practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
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 the Microsoft.Sql service endpoint on AppSubnet and add a virtual network rule on the SQL server. — Option B is correct because enabling the Microsoft.Sql service endpoint on AppSubnet allows traffic from that subnet to reach Azure SQL Database's public endpoint without requiring public IP addresses or DNS changes. Adding a virtual network rule on the SQL server restricts access exclusively to that subnet, meeting the security requirement without deploying private IPs.
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
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.