The answer is Microsoft Defender for SQL, the Azure service that provides automatic threat detection and response for Azure SQL Database. This is correct because Defender for SQL is a cloud-native security solution that continuously monitors database activity for anomalous behaviors, such as SQL injection attempts or unusual access patterns, and generates security alerts without requiring manual intervention. On the AZ-900 exam, this question tests your understanding of Azure’s security services under the “security capabilities” domain, often appearing as a scenario where you must identify the tool that protects against database threats. A common trap is confusing it with Azure SQL Database firewall rules or Azure Security Center, but remember: Defender for SQL is the dedicated threat detection and response service, not just a firewall. Memory tip: Think “Defender defends the database” — if it’s about spotting SQL injection or suspicious queries, Defender for SQL is your answer.
AZ-900 Describe Azure architecture and services Practice Question
This AZ-900 practice question tests your understanding of describe azure architecture and services. 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.
Which Azure service provides automatic threat detection and response for Azure SQL Database, detecting anomalous activities like SQL injection?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Microsoft Defender for SQL
Microsoft Defender for SQL is the correct answer because it is a cloud-native security solution specifically designed to detect and respond to threats against Azure SQL Database, including SQL injection attacks. It provides advanced threat protection by continuously monitoring database activities and generating security alerts for anomalous behaviors, such as unusual access patterns or injection attempts, without requiring manual intervention.
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.
✗
Azure SQL Database auditing
Why it's wrong here
SQL auditing logs database activities for compliance but doesn't detect threats or generate security alerts.
✓
Microsoft Defender for SQL
Why this is correct
Defender for SQL provides advanced threat detection for SQL databases, detecting SQL injection, brute force, and anomalous access.
Related concept
Read the scenario before looking for a memorised answer.
Azure Firewall controls network traffic — it doesn't provide database-level threat detection.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Azure SQL Database auditing (which only logs events) with threat detection, or they mistakenly think Azure Firewall can inspect SQL traffic at the application layer, but it only filters based on IP/port rules and cannot parse SQL syntax.
Detailed technical explanation
How to think about this question
Microsoft Defender for SQL integrates with Azure SQL Database by analyzing telemetry from the database engine, including query execution plans and login patterns, to identify suspicious activities such as brute-force attacks or SQL injection attempts. It uses machine learning models trained on global threat intelligence to differentiate between normal and malicious behavior, and it can automatically trigger remediation actions like blocking the offending IP address or alerting security teams via Azure Sentinel. In a real-world scenario, if a web application is compromised, Defender for SQL can detect a SQL injection payload in a query and immediately generate an alert, reducing the window of exposure.
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 AZ-900 question in full detail.
Describe Azure architecture and services — This question tests Describe Azure architecture and services — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Microsoft Defender for SQL — Microsoft Defender for SQL is the correct answer because it is a cloud-native security solution specifically designed to detect and respond to threats against Azure SQL Database, including SQL injection attacks. It provides advanced threat protection by continuously monitoring database activities and generating security alerts for anomalous behaviors, such as unusual access patterns or injection attempts, without requiring manual intervention.
What should I do if I get this AZ-900 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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