The answer is to add the Stream Analytics job's managed identity as a trusted service in the storage account firewall. This resolves the issue because when a storage account restricts access to selected networks, even a managed identity cannot bypass the firewall unless it is explicitly registered as a trusted Microsoft service. By enabling the "Allow trusted Microsoft services to access this storage account" setting, Azure Stream Analytics can authenticate via its managed identity without needing public IP ranges or private endpoints. On the DP-203 exam, this scenario tests your understanding of how managed identities interact with Azure network security features, and it is a common trap to assume that managed identity alone grants automatic firewall bypass. Remember the key distinction: managed identity handles authentication, but trusted service handles authorization through network restrictions. A helpful mnemonic is "Trust the Identity, not just the Identity"—the managed identity gets you in the door, but the trusted service setting unlocks the firewall.
DP-203 Practice Question: Secure, monitor, and optimize data storage and data processing
This DP-203 practice question tests your understanding of secure, monitor, and optimize data storage and data processing. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 Azure Stream Analytics job is failing to start because the job's storage account is configured to allow access from selected networks. The job uses managed identity for authentication. What should you do to resolve the issue?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Add the Stream Analytics job's managed identity as a trusted service in the storage account firewall.
Option C is correct because the Stream Analytics job's managed identity must be added as a trusted service to bypass the network restrictions. Option A is wrong because firewall rules apply to all services; managed identity must be explicitly allowed. Option B is wrong because private endpoints require additional configuration and are not required. Option D is wrong because SAS tokens are not needed with managed identity.
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.
✗
Create a private endpoint for the Stream Analytics job to access the storage account.
Why it's wrong here
Private endpoints are an option but not the simplest fix; the job's managed identity can be trusted.
✗
Disable the firewall on the storage account to allow all networks.
Why it's wrong here
Disabling the firewall reduces security and is not recommended.
✓
Add the Stream Analytics job's managed identity as a trusted service in the storage account firewall.
Why this is correct
Trusted services bypass firewall rules when using managed identity.
Related concept
Read the scenario before looking for a memorised answer.
✗
Generate a SAS token for the storage account and configure the job to use it.
Why it's wrong here
SAS tokens are not needed if managed identity is used; the issue is network access.
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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this DP-203 question in full detail.
Identify which DP-203 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, monitor, and optimize data storage and data processing — This question tests Secure, monitor, and optimize data storage and data processing — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Add the Stream Analytics job's managed identity as a trusted service in the storage account firewall. — Option C is correct because the Stream Analytics job's managed identity must be added as a trusted service to bypass the network restrictions. Option A is wrong because firewall rules apply to all services; managed identity must be explicitly allowed. Option B is wrong because private endpoints require additional configuration and are not required. Option D is wrong because SAS tokens are not needed with managed identity.
What should I do if I get this DP-203 question wrong?
Identify which DP-203 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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Question Discussion
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