AZ-204 Develop for Azure storage Practice Question
This AZ-204 practice question tests your understanding of develop for azure storage. 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.
You are building a compliance solution that stores terabytes of data in Azure Blob Storage. Data is appended frequently and never modified. Regulatory requirements mandate that no data can be overwritten or deleted for 7 years. Which storage configuration should you enable?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "never"
Why it matters: Absolute qualifier. True only if the statement has zero exceptions — be cautious of options that seem obvious but break down in edge cases.
Correct. A time-based retention policy makes blobs immutable for the specified duration (up to 7 years or more), meeting compliance requirements.
B
Enable blob soft delete
Why wrong: Incorrect. Soft delete retains deleted blobs for a period but allows overwriting existing blobs, which violates the immutability requirement.
C
Enable blob versioning
Why wrong: Incorrect. Versioning preserves earlier versions when a blob is overwritten, but it does not prevent overwrites, so the current version can still be changed.
D
Enable change feed
Why wrong: Incorrect. Change feed records all modifications to blobs but does not prevent modifications or deletions.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Enable immutability policy (time-based retention)
A is correct because a time-based retention policy under Azure Blob Storage immutability policy ensures that blobs cannot be overwritten or deleted for a specified duration (here, 7 years). This meets the regulatory requirement of write-once-read-many (WORM) compliance, and the policy is enforced at the storage container level, preventing any modifications or deletions even by the storage account owner.
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 immutability policy (time-based retention)
Why this is correct
Correct. A time-based retention policy makes blobs immutable for the specified duration (up to 7 years or more), meeting compliance requirements.
Clue confirmation
The clue word "never" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Enable blob soft delete
Why it's wrong here
Incorrect. Soft delete retains deleted blobs for a period but allows overwriting existing blobs, which violates the immutability requirement.
✗
Enable blob versioning
Why it's wrong here
Incorrect. Versioning preserves earlier versions when a blob is overwritten, but it does not prevent overwrites, so the current version can still be changed.
✗
Enable change feed
Why it's wrong here
Incorrect. Change feed records all modifications to blobs but does not prevent modifications or deletions.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse immutability policies with soft delete or versioning, thinking that preserving previous versions or recovering deleted blobs satisfies the 'no overwrite or delete' requirement, but only immutability policies provide a hard enforcement that prevents the operation from succeeding in the first place.
Detailed technical explanation
How to think about this question
Under the hood, Azure Blob Storage immutability policies are enforced at the container level using a legal hold or time-based retention. For time-based retention, the policy sets a retention interval that starts when the blob is created; during this interval, the blob cannot be deleted or overwritten, and even the storage account owner cannot bypass the policy without first removing it (which requires a specific process and permissions). This is critical for industries like finance or healthcare where regulatory compliance (e.g., SEC Rule 17a-4) mandates WORM storage, and the policy is backed by Azure's internal audit logs to prove compliance.
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 AZ-204 question in full detail.
Develop for Azure storage — This question tests Develop for Azure storage — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Enable immutability policy (time-based retention) — A is correct because a time-based retention policy under Azure Blob Storage immutability policy ensures that blobs cannot be overwritten or deleted for a specified duration (here, 7 years). This meets the regulatory requirement of write-once-read-many (WORM) compliance, and the policy is enforced at the storage container level, preventing any modifications or deletions even by the storage account owner.
What should I do if I get this AZ-204 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: "never". Absolute qualifier. True only if the statement has zero exceptions — be cautious of options that seem obvious but break down in edge cases.
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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