- A
Enable advanced threat protection using Microsoft Defender for Cloud.
Defender for Cloud provides threat detection and alerts for suspicious activities.
- B
Implement server-level auditing to capture database events.
Auditing helps detect and investigate security incidents.
- C
Create columnstore indexes on large tables to improve query performance.
Why wrong: Columnstore indexes improve performance, not security.
- D
Configure network security groups (NSGs) on the subnet to restrict inbound traffic to the managed instance.
NSGs filter traffic at the subnet level, providing network security.
- E
Create application roles in each database to manage permissions.
Why wrong: Application roles are an authorization mechanism, not a security control; they don't provide defense-in-depth.
Quick Answer
The answer is to configure network security groups (NSGs) on the subnet to restrict inbound traffic, enable Microsoft Defender for Cloud for advanced threat protection, and implement Transparent Data Encryption (TDE) with customer-managed keys. These three controls form the bedrock of a defense-in-depth strategy for Azure SQL Managed Instance by layering network perimeter security, threat detection, and data-at-rest encryption. On the DP-300 exam, this question tests your understanding that defense-in-depth requires overlapping controls across network, host, and data layers, not just a single solution. A common trap is choosing only Azure Active Directory authentication, which is identity-based but does not address network isolation or threat monitoring. Remember the mnemonic “N-T-D” for Network, Threat, Data—NSGs block unwanted traffic, Defender alerts on suspicious activity, and TDE protects the physical database files. This layered approach ensures that if one control fails, others remain active, which is the core principle Microsoft expects you to apply for managed instance security.
DP-300 Implement a secure environment Practice Question
This DP-300 practice question tests your understanding of implement a secure environment. 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.
Your organization uses Azure SQL Managed Instance and needs to implement a defense-in-depth strategy. Which THREE security controls should you implement? (Choose three.)
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Enable advanced threat protection using Microsoft Defender for Cloud.
Option A is correct because enabling advanced threat protection via Microsoft Defender for Cloud provides continuous monitoring for suspicious activities, such as SQL injection or brute-force attacks, and generates security alerts that integrate with Azure Sentinel or SIEM solutions. This is a critical layer in a defense-in-depth strategy, as it detects and responds to threats at the database level.
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.
- ✓
Enable advanced threat protection using Microsoft Defender for Cloud.
Why this is correct
Defender for Cloud provides threat detection and alerts for suspicious activities.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Implement server-level auditing to capture database events.
Why this is correct
Auditing helps detect and investigate security incidents.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Create columnstore indexes on large tables to improve query performance.
Why it's wrong here
Columnstore indexes improve performance, not security.
- ✓
Configure network security groups (NSGs) on the subnet to restrict inbound traffic to the managed instance.
Why this is correct
NSGs filter traffic at the subnet level, providing network security.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Create application roles in each database to manage permissions.
Why it's wrong here
Application roles are an authorization mechanism, not a security control; they don't provide defense-in-depth.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse performance tuning features (like columnstore indexes) or routine permission management (like application roles) with distinct security controls, failing to recognize that defense-in-depth requires separate, layered protections across network, monitoring, and auditing domains.
Detailed technical explanation
How to think about this question
Defense-in-depth in Azure SQL Managed Instance involves multiple layers: network security (NSGs on the subnet to filter traffic at layer 3/4), threat detection (Microsoft Defender for Cloud analyzes SQL audit logs and telemetry for attack patterns), and auditing (server-level auditing captures all database events, including DDL and DML, for forensic analysis and compliance). NSGs on the managed instance subnet use service tags and security rules to restrict inbound traffic to only required source IPs or Azure services, preventing lateral movement from compromised resources.
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.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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FAQ
Questions learners often ask
What does this DP-300 question test?
Implement a secure environment — This question tests Implement a secure environment — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Enable advanced threat protection using Microsoft Defender for Cloud. — Option A is correct because enabling advanced threat protection via Microsoft Defender for Cloud provides continuous monitoring for suspicious activities, such as SQL injection or brute-force attacks, and generates security alerts that integrate with Azure Sentinel or SIEM solutions. This is a critical layer in a defense-in-depth strategy, as it detects and responds to threats at the database level.
What should I do if I get this DP-300 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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Last reviewed: Jun 24, 2026
This DP-300 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-300 exam.
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