The answer is to create a server-level firewall rule with the application's static public IP address. This is correct because Azure SQL Database uses firewall rules at the server level to evaluate inbound connections; a rule specifying the exact source IP address explicitly permits traffic from that host while denying all others by default, making it the simplest method to allow a specific public IP to Azure SQL Database while maintaining security. On the Microsoft Azure Database Administrator Associate DP-300 exam, this scenario tests your understanding of network security controls versus database-level user permissions—a common trap is confusing server-level rules with database-level contained users or virtual network service endpoints, which are unnecessary when the client has a static public IP. Remember the memory tip: "Server rules for IP, database rules for users" to quickly distinguish when to configure each layer.
DP-300 Implement a secure environment Practice Question
This DP-300 practice question tests your understanding of implement a secure environment. 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.
You have an Azure SQL Database that needs to be accessed by an application with a static public IP address. You want to allow only that IP address to connect. What should you configure?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Create a server-level firewall rule with the application's IP.
Option C is correct because a server-level firewall rule explicitly allows inbound connections from a specific client IP address to the Azure SQL Database logical server. Since the application has a static public IP, configuring a server-level firewall rule with that IP is the simplest and most direct method to restrict access to only that address, while still using the public endpoint.
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 virtual network rule for the database.
Why it's wrong here
VNet rules are for traffic from a specific virtual network.
✗
Create a private endpoint for the database.
Why it's wrong here
Private endpoint is for private IP from a VNet.
✓
Create a server-level firewall rule with the application's IP.
Why this is correct
Server-level firewall rules allow specific IP addresses.
Related concept
Read the scenario before looking for a memorised answer.
✗
Create a database-level firewall rule with the application's IP.
Why it's wrong here
Database-level rules are not supported for single databases; use server-level.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse database-level firewall rules (Option D) as the correct answer, not realizing that server-level rules are the standard for IP-based access and that database-level rules require contained database users, which is an additional prerequisite not mentioned in the scenario.
Detailed technical explanation
How to think about this question
Azure SQL Database firewall rules are stored in the master database and evaluated at the gateway layer before any connection is established. Server-level firewall rules can be managed via T-SQL (sp_set_firewall_rule) or the Azure portal, and they support up to 256 rules per server. In contrast, database-level firewall rules (sp_set_database_firewall_rule) are only available for contained databases and are less commonly used because they require contained database authentication, which adds complexity.
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this DP-300 question in full detail.
Implement a secure environment — This question tests Implement a secure environment — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Create a server-level firewall rule with the application's IP. — Option C is correct because a server-level firewall rule explicitly allows inbound connections from a specific client IP address to the Azure SQL Database logical server. Since the application has a static public IP, configuring a server-level firewall rule with that IP is the simplest and most direct method to restrict access to only that address, while still using the public endpoint.
What should I do if I get this DP-300 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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