The answer is to enable VNet service endpoints and configure firewall rules. This combination works because VNet service endpoints extend your virtual network identity to the Azure SQL Database service, allowing you to restrict inbound traffic to a specific subnet, while firewall rules let you define allowed public IP address ranges, creating a layered security boundary. On the Microsoft Azure Database Administrator Associate DP-300 exam, this scenario tests your understanding of network-level access controls, often appearing in questions about hybrid connectivity or secure access from both on-premises and Azure resources. A common trap is assuming that just one feature—like private endpoints or firewall rules alone—can satisfy both requirements, but private endpoints replace public endpoints entirely, whereas the question explicitly asks to allow specific public IPs alongside a VNet. Remember the mnemonic “VNet for virtual, Firewall for fixed”: VNet service endpoints handle traffic from your virtual network, and firewall rules handle traffic from fixed public IP addresses.
DP-300 Plan and implement data platform resources Practice Question
This DP-300 practice question tests your understanding of plan and implement data platform resources. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 are configuring security for an Azure SQL Database. You need to ensure that only traffic from a specific virtual network and a specific set of public IP addresses can connect to the database. Which two features should you enable?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
VNet service endpoints and firewall rules
To restrict access to an Azure SQL Database to traffic from a specific virtual network and a specific set of public IP addresses, you need to combine VNet service endpoints with firewall rules. VNet service endpoints allow you to restrict inbound traffic from a specific subnet in a virtual network, while firewall rules (IP-based) allow you to specify allowed public IP address ranges. Together, they provide a layered network security approach that meets the requirement.
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.
✗
Microsoft Entra ID authentication and firewall rules
Why it's wrong here
Microsoft Entra ID authenticates users, not network traffic.
✓
VNet service endpoints and firewall rules
Why this is correct
Service endpoints restrict traffic from a VNet; firewall rules allow specific public IP addresses.
Related concept
Read the scenario before looking for a memorised answer.
✗
Advanced Threat Protection and VNet service endpoints
Why it's wrong here
Advanced Threat Protection does not control network access.
✗
Private endpoint and VNet service endpoints
Why it's wrong here
Private endpoint allows traffic only from the VNet, not from public IPs.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse network-level controls (firewall rules, service endpoints) with identity/security monitoring features (Entra ID, ATP), leading them to pick options that address authentication or threat detection instead of network access restrictions.
Detailed technical explanation
How to think about this question
VNet service endpoints work by extending the virtual network identity to the Azure SQL Database service, allowing you to bind a subnet's traffic to the database via the Azure backbone network, bypassing the public internet. Firewall rules at the server level evaluate source IP addresses against a list of allowed ranges; when both are configured, the database firewall checks the source IP or the virtual network rule first. A common real-world scenario is a hybrid application where developers connect from a corporate VPN (public IPs) and production workloads run in a VNet, requiring both rule types to be active simultaneously.
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.
Plan and implement data platform resources — This question tests Plan and implement data platform resources — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: VNet service endpoints and firewall rules — To restrict access to an Azure SQL Database to traffic from a specific virtual network and a specific set of public IP addresses, you need to combine VNet service endpoints with firewall rules. VNet service endpoints allow you to restrict inbound traffic from a specific subnet in a virtual network, while firewall rules (IP-based) allow you to specify allowed public IP address ranges. Together, they provide a layered network security approach that meets the requirement.
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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