- A
Enable 'Allow Azure services and resources to access this server' in the firewall settings.
Correct. This setting allows Azure services (e.g., App Service, Functions) to connect to the database through the public endpoint.
- B
Enable Always Encrypted with secure enclaves.
Why wrong: Incorrect. Always Encrypted with secure enclaves is a data encryption feature, not a network access control.
- C
Set firewall rules to allow specific on-premises IP ranges.
Correct. Firewall rules for on-premises IP ranges allow specific on-premises clients to connect.
- D
Create a virtual network service endpoint for SQL.
Why wrong: Incorrect. A virtual network service endpoint is used for private connectivity from a VNet, but the question assumes a public endpoint is already in use.
- E
Configure a private endpoint for the database.
Why wrong: Incorrect. A private endpoint provides private connectivity, but the database already has a public endpoint, and the requirement can be met with firewall rules.
DP-300 Azure SQL Database firewall 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. A key principle to apply: azure SQL Database firewall. 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.
Your organization uses Azure SQL Database and wants to restrict access to only specific Azure services and on-premises IP addresses. The database has a public endpoint. Which two security features 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 'Allow Azure services and resources to access this server' in the firewall settings.
To restrict access to only specific Azure services and on-premises IP addresses, you need to configure both the 'Allow Azure services and resources to access this server' firewall setting (which permits traffic from Azure services) and add firewall rules for on-premises IP ranges. Option A enables Azure service access, and option C allows on-premises IPs. Together they satisfy the requirement. Option B (Always Encrypted) is unrelated to network access. Option D (virtual network service endpoint) and option E (private endpoint) are alternative private connectivity methods, but the question states the database has a public endpoint, so firewall rules are the appropriate solution.
Key principle: Azure SQL Database firewall
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Enable 'Allow Azure services and resources to access this server' in the firewall settings.
Why this is correct
Correct. This setting allows Azure services (e.g., App Service, Functions) to connect to the database through the public endpoint.
Related concept
Azure SQL Database firewall
- ✗
Enable Always Encrypted with secure enclaves.
Why it's wrong here
Incorrect. Always Encrypted with secure enclaves is a data encryption feature, not a network access control.
- ✓
Set firewall rules to allow specific on-premises IP ranges.
- ✗
Create a virtual network service endpoint for SQL.
Why it's wrong here
Incorrect. A virtual network service endpoint is used for private connectivity from a VNet, but the question assumes a public endpoint is already in use.
- ✗
Configure a private endpoint for the database.
Why it's wrong here
Incorrect. A private endpoint provides private connectivity, but the database already has a public endpoint, and the requirement can be met with firewall rules.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Candidates often select only one feature, not realizing that both the 'Allow Azure services' toggle and specific IP firewall rules are required to meet the full requirement of allowing both Azure services and on-premises IPs.
Detailed technical explanation
How to think about this question
Azure SQL Database firewall rules are evaluated at the network layer using a list of allowed IP ranges (IPv4 CIDR notation). The 'Allow Azure services' checkbox adds a special rule that permits all Azure datacenter IP ranges, which are maintained by Microsoft and updated automatically. For on-premises access, you must add explicit firewall rules with your public IP ranges; note that if the on-premises IP changes, the rule must be updated. Private endpoints use Azure Private Link to assign a private IP from a virtual network, removing public exposure entirely, but they require hybrid connectivity (e.g., VPN or ExpressRoute) for on-premises access, making them unsuitable for the stated requirement of allowing specific on-premises IPs directly.
KKey Concepts to Remember
- Azure SQL Database firewall
- Allow Azure services
- IP firewall rules
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
Azure SQL Database firewall
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.
Review azure SQL Database firewall, then practise related DP-300 questions on the same topic to reinforce the concept.
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Implement a secure environment — study guide chapter
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FAQ
Questions learners often ask
What does this DP-300 question test?
Implement a secure environment — This question tests Implement a secure environment — Azure SQL Database firewall.
What is the correct answer to this question?
The correct answer is: Enable 'Allow Azure services and resources to access this server' in the firewall settings. — To restrict access to only specific Azure services and on-premises IP addresses, you need to configure both the 'Allow Azure services and resources to access this server' firewall setting (which permits traffic from Azure services) and add firewall rules for on-premises IP ranges. Option A enables Azure service access, and option C allows on-premises IPs. Together they satisfy the requirement. Option B (Always Encrypted) is unrelated to network access. Option D (virtual network service endpoint) and option E (private endpoint) are alternative private connectivity methods, but the question states the database has a public endpoint, so firewall rules are the appropriate solution.
What should I do if I get this DP-300 question wrong?
Review azure SQL Database firewall, then practise related DP-300 questions on the same topic to reinforce the concept.
What is the key concept behind this question?
Azure SQL Database firewall
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Last reviewed: Jun 24, 2026
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