The answer is that auditing will fail because the storage account access key is null. This is correct because Azure SQL Database blob auditing requires a valid authentication method to write logs to the storage container; when the access key is null and no managed identity is configured, the database cannot authenticate to the storage account, causing all audit log writes to fail. On the DP-300 exam, this scenario tests your understanding of Azure SQL auditing authentication options—specifically the difference between storage account access keys and managed identities. A common trap is assuming that a null key is acceptable if the subscription ID is present, but the subscription ID being all zeros further indicates a misconfigured or disconnected policy. Remember the memory tip: "No key, no audit—unless a managed identity is there to flaunt it."
DP-300 Implement a secure environment Practice Question
This DP-300 practice question tests your understanding of implement a secure environment. 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.
Refer to the exhibit. You are troubleshooting an Azure SQL Database auditing configuration. The exhibit shows the blob auditing policy. The storage account access key is null, and the subscription ID is all zeros. What is the most likely issue?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Auditing will fail because the storage account access key is null.
The exhibit shows that the storage account access key is null, which means Azure SQL Database cannot authenticate to the storage account using the access key. Without a valid access key or a configured managed identity, blob auditing will fail because the database cannot write audit logs to the specified storage container. Option C is correct because a null access key directly prevents auditing from functioning when no alternative authentication method is configured.
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.
✗
Auditing will fall back to Log Analytics workspace.
Why it's wrong here
There is no fallback; if blob auditing is misconfigured, it fails silently.
✗
Auditing will work because managed identity is used.
Why it's wrong here
Managed identity is not supported for blob auditing; storage account key or subscription-based access is required.
✓
Auditing will fail because the storage account access key is null.
Why this is correct
Blob auditing requires a storage account key or a valid subscription ID with appropriate permissions; null key indicates misconfiguration.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Auditing will write to the storage account using the system-assigned managed identity.
Why it's wrong here
System-assigned managed identity is not supported for blob auditing; it's only for event hub or Log Analytics.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates assume managed identity is automatically used when the access key is null, but in reality, managed identity must be explicitly configured and granted permissions, and the exhibit shows no such configuration.
Detailed technical explanation
How to think about this question
Azure SQL Database blob auditing uses either a storage account access key or a managed identity to authenticate to Azure Storage. When the access key is null, the system attempts to use a managed identity only if it is enabled and the storage account has the necessary RBAC role assignment; otherwise, the audit policy fails to write logs. In practice, if you switch from access key to managed identity, you must first enable the system-assigned or user-assigned managed identity on the logical server, then grant the identity the 'Storage Blob Data Contributor' role on the storage account, and finally update the auditing policy to use that identity.
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 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-300 question in full detail.
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: Auditing will fail because the storage account access key is null. — The exhibit shows that the storage account access key is null, which means Azure SQL Database cannot authenticate to the storage account using the access key. Without a valid access key or a configured managed identity, blob auditing will fail because the database cannot write audit logs to the specified storage container. Option C is correct because a null access key directly prevents auditing from functioning when no alternative authentication method is configured.
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.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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