AZ-104 Implement and Manage Storage Practice Question
This AZ-104 practice question tests your understanding of implement and manage 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.
An administrator moved old log blobs to the Archive tier last month. An auditor now needs one blob for review later today. What must happen before the blob can be opened?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Change the blob to Hot or Cool and wait for rehydration to complete
Blobs in the Archive tier are offline and cannot be read directly. To access the data, you must first change the blob's access tier to Hot or Cool (rehydrate it), which can take up to 15 hours depending on the rehydration priority. Only after rehydration completes can the blob be downloaded and opened.
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.
✗
Download the blob directly from the Archive tier and open it immediately
Why it's wrong here
Archive data is offline, so it cannot be opened immediately without a restore step first.
✓
Change the blob to Hot or Cool and wait for rehydration to complete
Why this is correct
Archived blobs must be rehydrated back to an online tier before their contents can be read.
Related concept
Read the scenario before looking for a memorised answer.
✗
Create a snapshot of the blob and open the snapshot instead
Why it's wrong here
A snapshot does not bypass Archive tier restrictions if the source blob is still offline.
✗
Copy the blob to another container without changing its tier
Why it's wrong here
Copying alone does not make archived content readable until it is rehydrated to an online tier.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates assume archived blobs are still readable like Cool or Hot tier blobs, or that a snapshot or copy operation can bypass the rehydration requirement, but Azure enforces that the data must be physically moved back to an online tier before any access is allowed.
Detailed technical explanation
How to think about this question
Rehydration from the Archive tier involves changing the blob's tier to Hot or Cool, which triggers an asynchronous background operation that moves the data back to online storage. You can set the x-ms-rehydrate-priority header to Standard (up to 15 hours) or High (up to 1 hour) to control the speed. During rehydration, the blob's status is 'rehydrate-pending-to-hot' or 'rehydrate-pending-to-cool', and any read request will fail until the process completes.
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-104 question in full detail.
Implement and Manage Storage — This question tests Implement and Manage Storage — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Change the blob to Hot or Cool and wait for rehydration to complete — Blobs in the Archive tier are offline and cannot be read directly. To access the data, you must first change the blob's access tier to Hot or Cool (rehydrate it), which can take up to 15 hours depending on the rehydration priority. Only after rehydration completes can the blob be downloaded and opened.
What should I do if I get this AZ-104 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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