Quick Answer
The correct answer is to configure virtual network service endpoints and firewall rules. This combination allows you to restrict Azure SQL Database access exclusively to traffic originating from a specific virtual network, effectively denying all public endpoint connections by creating a network rule that ties the database to your VNet’s subnet. On the Microsoft Azure Data Fundamentals DP-900 exam, this scenario tests your understanding of network-level access controls versus private connectivity options; a common trap is confusing service endpoints with Private Link, but remember that service endpoints work with the existing public endpoint to lock it down to a VNet, whereas Private Link removes the public endpoint entirely. Another trap is assuming you can simply disable the public endpoint—Azure SQL Database always has a public endpoint by default, and disabling it without Private Link would block all access. For a quick memory tip, think “VNet service endpoints = public endpoint, but VNet-only access,” and contrast that with “Private Link = no public endpoint at all.”
This DP-900 practice question tests your understanding of identify considerations for relational data on azure. 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.
A company needs to ensure that their Azure SQL Database is accessible only from a specific virtual network and deny access from public endpoints. Which feature should they configure?
Disable public network access
Why wrong: Disabling public access without Private Link blocks all access.
Virtual network service endpoints and firewall rules
Service endpoints allow VNet-specific access while denying public endpoints.
IP firewall rules
Why wrong: IP rules allow public IPs, not VNet-specific.
Azure Private Link
Why wrong: Private Link provides private IP connectivity but does not deny public access by itself.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Virtual network service endpoints and firewall rules
Option C is correct because virtual network service endpoints and firewall rules allow restricting access to a specific VNet. Option A is wrong because Private Link provides private connectivity but is more complex. Option B is wrong because Azure SQL Database always has a public endpoint by default; disabling it without Private Link would block all access. Option D is wrong because IP firewall rules allow public IPs, not VNet-specific.
Key principle: ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Disable public network access
Why it's wrong here
Disabling public access without Private Link blocks all access.
Virtual network service endpoints and firewall rules
Why this is correct
Service endpoints allow VNet-specific access while denying public endpoints.
Related concept
Standard ACLs match source addresses.
IP firewall rules
Why it's wrong here
IP rules allow public IPs, not VNet-specific.
Azure Private Link
Why it's wrong here
Private Link provides private IP connectivity but does not deny public access by itself.
Common exam traps
ACLs are processed top to bottom. The first matching entry wins, and an implicit deny usually exists at the end.
Detailed technical explanation
ACL questions test precision: source, destination, protocol, port and direction. A generally correct ACL can still fail if it is applied on the wrong interface or in the wrong direction.
Key takeaway
ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
Real-world example
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
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related DP-900 ACL questions on filtering logic and placement.
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FAQ
Identify considerations for relational data on Azure — This question tests Identify considerations for relational data on Azure — Standard ACLs match source addresses..
The correct answer is: Virtual network service endpoints and firewall rules — Option C is correct because virtual network service endpoints and firewall rules allow restricting access to a specific VNet. Option A is wrong because Private Link provides private connectivity but is more complex. Option B is wrong because Azure SQL Database always has a public endpoint by default; disabling it without Private Link would block all access. Option D is wrong because IP firewall rules allow public IPs, not VNet-specific.
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related DP-900 ACL questions on filtering logic and placement.
Standard ACLs match source addresses.
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Last reviewed: Jun 20, 2026
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