DP-300 Implement a secure environment Practice Question
You are setting up Azure SQL Database and need to ensure that only specific Azure services (e.g., Azure Data Factory) can access the database. What should you configure?
⚠ Common exam trap
Watch out — candidates often confuse the 'Allow Azure services' firewall rule (0.0.0.0) with a method to restrict access to specific services, when in reality it permits all Azure services, and they overlook that virtual network rules provide the necessary granularity for service-specific access.
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
✓
Add a virtual network rule for the subnet where the service is deployed.
A virtual network rule allows you to restrict access to your Azure SQL Database to traffic originating from a specific virtual network subnet. When Azure services like Azure Data Factory are deployed in a virtual network, you can create a virtual network rule that references the subnet of that service, ensuring only traffic from that subnet can connect. This provides a more secure and granular access control compared to IP-based firewall rules, as it leverages the Azure backbone network and avoids exposing the database to public IP ranges.
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 private endpoint for the database.
Why it's wrong here
Incorrect: Private endpoint provides private connectivity but does not restrict to specific services.
- ✗
Add firewall rules for the public IP addresses of the Azure services.
Why it's wrong here
Incorrect: Public IPs of Azure services are dynamic and not reliable.
- ✗
Add a firewall rule with start and end IP set to 0.0.0.0.
Why it's wrong here
Incorrect: This allows all Azure services, not specific ones.
- ✓
Add a virtual network rule for the subnet where the service is deployed.
Why this is correct
Correct: This restricts access to that subnet.
Visual reference
Go deeper
Related to this question
Learn chapter
Overview of Azure Data Platform Options
Key term
Azure SQL Performance Tuning
Azure SQL Performance Tuning is the process of optimizing the speed and efficiency of queries and database operations in Microsoft Azure SQL Database or SQL Managed Instance to reduce latency and improve throughput.
About these practice questions
One of 906 original DP-300 practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This DP-300 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 DP-300 exam.