The answer is Azure Private Link via a private endpoint. This solution is correct because it places the Azure SQL Database onto a private IP address within your virtual network, enabling an on-premises application to connect through a VPN or ExpressRoute while keeping all traffic off the public internet. On the AZ-500 exam, this scenario tests your understanding of network isolation controls; the common trap is confusing service endpoints with Private Link—remember that service endpoints still resolve to a public IP for the service, even though traffic stays on the Microsoft backbone. Private Link, by contrast, gives the database a fully private IP that is only reachable from within your connected network. A useful memory tip: think “Private Link = Private IP” versus “Service Endpoint = Public IP, Private Path.”
AZ-500 Secure compute, storage, and databases Practice Question
This AZ-500 practice question tests your understanding of secure compute, storage, and databases. 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 need to securely connect to an Azure SQL Database from an on-premises application without exposing the database to the public internet. Which solution should you use?
Configure a firewall rule to allow the on-premises public IP address
Why wrong: This exposes the database to the internet, even if only from that IP, which is less secure.
B
Use Azure Private Link to connect via a private endpoint
Private Link provides a private IP address in your virtual network, accessible from on-premises via VPN/ExpressRoute, without public internet exposure.
C
Enable Always Encrypted on the database
Why wrong: Always Encrypted protects data at the client side but does not affect network connectivity.
D
Use a virtual network service endpoint for Azure SQL Database
Why wrong: Service endpoints route traffic over the Azure backbone but still use a public IP for the service endpoint; private endpoint is more secure.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use Azure Private Link to connect via a private endpoint
Option A is correct because Azure Private Link creates a private endpoint in a virtual network, allowing on-premises connectivity via VPN or ExpressRoute without public exposure. Option B is wrong because firewall rules with public IP still expose the database to the internet. Option C is wrong because always encrypted does not affect network access. Option D is wrong because service endpoints still use a public IP for the service, though traffic stays on the backbone.
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.
✗
Configure a firewall rule to allow the on-premises public IP address
Why it's wrong here
This exposes the database to the internet, even if only from that IP, which is less secure.
✓
Use Azure Private Link to connect via a private endpoint
Why this is correct
Private Link provides a private IP address in your virtual network, accessible from on-premises via VPN/ExpressRoute, without public internet exposure.
Related concept
Read the scenario before looking for a memorised answer.
✗
Enable Always Encrypted on the database
Why it's wrong here
Always Encrypted protects data at the client side but does not affect network connectivity.
✗
Use a virtual network service endpoint for Azure SQL Database
Why it's wrong here
Service endpoints route traffic over the Azure backbone but still use a public IP for the service endpoint; private endpoint is more secure.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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 AZ-500 question in full detail.
Identify which AZ-500 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Secure compute, storage, and databases — This question tests Secure compute, storage, and databases — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use Azure Private Link to connect via a private endpoint — Option A is correct because Azure Private Link creates a private endpoint in a virtual network, allowing on-premises connectivity via VPN or ExpressRoute without public exposure. Option B is wrong because firewall rules with public IP still expose the database to the internet. Option C is wrong because always encrypted does not affect network access. Option D is wrong because service endpoints still use a public IP for the service, though traffic stays on the backbone.
What should I do if I get this AZ-500 question wrong?
Identify which AZ-500 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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