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. 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 implementing a new Azure SQL Database and need to ensure that connections from client applications are encrypted using TLS 1.2 or higher. Which server-level firewall rule setting should you configure?
Deny public network access
Why wrong: Controls network access, not TLS version.
Enable contained database authentication
Why wrong: Related to authentication, not encryption.
Allow Azure Services and resources to access this server
Why wrong: Controls access from Azure, not encryption.
Set minimal TLS version to 1.2
Enforces TLS 1.2 or higher for all connections.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Set minimal TLS version to 1.2
Option D is correct because the 'Minimal TLS version' server-level firewall rule setting enforces the minimum TLS version for encrypted connections to Azure SQL Database. By setting this to 1.2, the server will reject any connection attempts using TLS 1.0 or 1.1, ensuring all client applications use TLS 1.2 or higher. This setting is configured in the Azure portal under the 'Networking' blade of the SQL server resource.
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.
Deny public network access
Why it's wrong here
Controls network access, not TLS version.
Enable contained database authentication
Why it's wrong here
Related to authentication, not encryption.
Allow Azure Services and resources to access this server
Why it's wrong here
Controls access from Azure, not encryption.
Set minimal TLS version to 1.2
Why this is correct
Enforces TLS 1.2 or higher for all connections.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
The trap here is that candidates confuse network access controls (like firewall rules or service endpoints) with encryption protocol enforcement, assuming that 'Allow Azure Services' or 'Deny public network access' somehow impacts TLS version requirements.
Detailed technical explanation
The 'Minimal TLS version' setting works by configuring the server-side TLS policy to reject handshakes that attempt to use a protocol version lower than the specified value. Under the hood, Azure SQL Database uses the SChannel security package on Windows Server to enforce this, and the setting is applied at the gateway layer before any database-level processing occurs. In a real-world scenario, legacy applications hardcoded to use TLS 1.0 would fail to connect after this change, which is why testing and application updates are critical before enforcement.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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
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FAQ
Implement a secure environment — This question tests Implement a secure environment — Read the scenario before looking for a memorised answer..
The correct answer is: Set minimal TLS version to 1.2 — Option D is correct because the 'Minimal TLS version' server-level firewall rule setting enforces the minimum TLS version for encrypted connections to Azure SQL Database. By setting this to 1.2, the server will reject any connection attempts using TLS 1.0 or 1.1, ensuring all client applications use TLS 1.2 or higher. This setting is configured in the Azure portal under the 'Networking' blade of the SQL server resource.
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
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