Quick Answer
The correct answer is Firewall and virtual network service endpoints. This combination works by first enabling a service endpoint on the subnet within your virtual network, which creates a direct, optimized route to Azure Storage, and then configuring a firewall rule on the storage account that denies all traffic except that originating from that specific subnet. This effectively blocks all internet-based access while allowing secure, private connectivity from your designated virtual network. On the DP-203 exam, this scenario tests your understanding of network-level security controls for Azure Data Lake Storage Gen2, often appearing as a distractor alongside private endpoints—remember that private endpoints assign a private IP, while service endpoints keep the public endpoint but restrict it to a VNet. A common trap is confusing service endpoints with private endpoints; the key memory tip is "firewall plus service endpoint equals internet block, private endpoint equals full isolation."
This DP-203 practice question tests your understanding of design and implement data storage. 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.
A data engineer is setting up Azure Data Lake Storage Gen2 for a new project. The security requirement is to prevent direct access to the storage account from the internet while allowing access from a specific virtual network. Which network security feature should be enabled?
Azure Private Endpoint
Why wrong: Provides private IP connectivity, but service endpoints are simpler.
Shared access signature (SAS)
Why wrong: Not for network-level restriction.
Azure Defender for Storage
Why wrong: Security monitoring, not access control.
Firewall and virtual network service endpoints
Allow access from specific VNet.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Firewall and virtual network service endpoints
Option D is correct because Firewall and virtual network service endpoints allow you to restrict access to Azure Data Lake Storage Gen2 to only traffic originating from a specific virtual network, effectively blocking all internet-based access. This is achieved by configuring a service endpoint on the subnet and a firewall rule on the storage account that denies all traffic except that from the designated virtual network.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Azure Private Endpoint
Why it's wrong here
Provides private IP connectivity, but service endpoints are simpler.
Shared access signature (SAS)
Why it's wrong here
Not for network-level restriction.
Azure Defender for Storage
Why it's wrong here
Security monitoring, not access control.
Firewall and virtual network service endpoints
Why this is correct
Allow access from specific VNet.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
The trap here is that candidates often confuse Azure Private Endpoint with a complete internet-blocking solution, but Private Endpoint alone does not disable the public endpoint; you must also configure the firewall to deny all public traffic.
Detailed technical explanation
Service endpoints extend your virtual network private address space and the identity of your VNet to the Azure service over a direct connection, bypassing the internet. When combined with a storage account firewall rule that denies all traffic except from the specified VNet, any request from outside that VNet (including from the internet) is rejected at the Azure network boundary. This is distinct from Private Endpoint, which uses a private IP within the VNet but still requires the firewall to explicitly block public endpoints.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
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FAQ
Design and implement data storage — This question tests Design and implement data storage — Read the scenario before looking for a memorised answer..
The correct answer is: Firewall and virtual network service endpoints — Option D is correct because Firewall and virtual network service endpoints allow you to restrict access to Azure Data Lake Storage Gen2 to only traffic originating from a specific virtual network, effectively blocking all internet-based access. This is achieved by configuring a service endpoint on the subnet and a firewall rule on the storage account that denies all traffic except that from the designated virtual network.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
This DP-203 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-203 exam.
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