AZ-104 Implement and Manage Storage Practice Question
Quarterly invoices were moved to the Archive tier by a lifecycle rule. An auditor now needs one specific blob available for download within the next hour. What should the administrator do?
⚠ Common exam trap
A common mix-up: candidates assume you can directly change the tier of an archived blob (like from Cool to Hot) without realizing that Archive-tier blobs are offline and require a separate rehydration step before any tier change or access is possible.
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
✓
Start a high-priority rehydration of the blob to the Hot tier, then wait for completion before downloading.
Blobs in the Archive tier are offline and must be rehydrated to an online tier (Hot or Cool) before they can be accessed. A high-priority rehydration completes within one hour, meeting the auditor's deadline. Changing a lifecycle rule (A) or directly setting the tier (B) does not initiate the necessary rehydration process, and copying an archived blob (D) fails because the blob is offline.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Change the lifecycle rule so the blob will automatically move back to Hot on the next run.
Why it's wrong here
A lifecycle rule only manages transitions after the blob is already accessible; it cannot force an immediate restore of an archived blob. The rule's next execution may be hours or days away, and even then it would simply set the tier attribute, not perform the actual rehydration of the offline archived data. This approach fails the urgent retrieval requirement because the blob remains frozen in Archive until a separate rehydration job completes.
When this WOULD be correct
If the question asked how to automatically move blobs from Cool to Hot tier on a recurring basis (e.g., monthly), modifying a lifecycle rule would be correct.
- ✗
Set the blob directly to the Hot tier and download it immediately.
Why it's wrong here
Setting the blob's access tier directly to Hot is only a metadata change and does not initiate or complete the required rehydration of the archived data. Archived blobs are stored in a compressed, offline state; any attempt to read or download the blob immediately after changing the tier will result in an error (or a delayed response if you set rehydrate-pending). To actually retrieve the data, you must explicitly call the rehydrate operation with a priority, wait for the background job to move the data back online, and only then download.
When this WOULD be correct
If the blob were in the Cool tier (not Archive), changing its tier to Hot would be immediate and allow download. This option would be correct for a question where the blob is in Cool and needs to be accessed quickly.
- ✓
Start a high-priority rehydration of the blob to the Hot tier, then wait for completion before downloading.
Why this is correct
Archive tier data is offline and must be rehydrated before it can be read. High-priority rehydration is the fastest recovery option when the blob is needed urgently, and Hot is appropriate when the user wants normal online access after the operation completes.
- ✗
Copy the archived blob to another container by using the portal copy command.
Why it's wrong here
The portal copy command cannot read the content of an archived blob because archive data is offline and the storage service returns an error for any read or copy operation until rehydration finishes. Even if the command appears to start, it will fail or hang waiting for the source blob to become available. You must first rehydrate the blob (e.g., via high-priority rehydration) to a hot or cool tier, and only then can you copy it successfully.
When this WOULD be correct
This option would be correct if the blob were already in the Hot or Cool tier (not archived), and the task was simply to copy it to another container for organizational purposes without changing its tier.
Option-by-option analysis
Why each answer is right or wrong
Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The AZ-104 exam frequently reuses these exact scenarios with slightly different constraints.
✓Start a high-priority rehydration of the blob to the Hot tier, then wait for completion before downloading.Correct answer▾
Why this is correct
Archive tier data is offline and must be rehydrated before it can be read. High-priority rehydration is the fastest recovery option when the blob is needed urgently, and Hot is appropriate when the user wants normal online access after the operation completes.
✗Change the lifecycle rule so the blob will automatically move back to Hot on the next run.Wrong answer — click to see why▾
Why this is wrong here
Lifecycle rules operate on a schedule (typically once per day) and cannot be triggered on-demand to move a specific blob within an hour. The blob is already in Archive tier and must be explicitly rehydrated.
★ When this WOULD be the correct answer
If the question asked how to automatically move blobs from Cool to Hot tier on a recurring basis (e.g., monthly), modifying a lifecycle rule would be correct.
Why candidates choose this
Candidates may think lifecycle rules can be manually triggered or that changing the rule will immediately affect existing blobs, misunderstanding that rules apply to new blobs or on the next scheduled run.
✗Set the blob directly to the Hot tier and download it immediately.Wrong answer — click to see why▾
Why this is wrong here
Blobs in the Archive tier are offline and cannot be directly set to Hot; they must be rehydrated first, which takes time. Setting the tier directly would fail or not make the blob available for immediate download.
★ When this WOULD be the correct answer
If the blob were in the Cool tier (not Archive), changing its tier to Hot would be immediate and allow download. This option would be correct for a question where the blob is in Cool and needs to be accessed quickly.
Why candidates choose this
Candidates may think that changing the tier is a direct, instant operation similar to moving a file between folders, not realizing that Archive blobs are offline and require a rehydration process.
✗Copy the archived blob to another container by using the portal copy command.Wrong answer — click to see why▾
Why this is wrong here
Copying an archived blob directly via the portal copy command fails because the blob is in the Archive tier and must be rehydrated (moved to a hot tier) before any copy or download operation can succeed.
★ When this WOULD be the correct answer
This option would be correct if the blob were already in the Hot or Cool tier (not archived), and the task was simply to copy it to another container for organizational purposes without changing its tier.
Why candidates choose this
Candidates may think the portal copy command can handle any blob regardless of tier, overlooking the fact that archived blobs are offline and require rehydration before any data access.
Analysis generated from the official AZ-104blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
Quick reference
Azure Blob Storage Tier Comparison
| Tier | Storage Cost | Retrieval Cost | Latency | Use Case |
|---|---|---|---|---|
| Hot | Highest | Lowest | Immediate | Active data, frequent reads |
| Cool | Lower | Higher | Immediate | Data accessed < once / month |
| Cold | Lower still | Higher | Immediate | Data accessed < once / quarter |
| Archive | Lowest | Highest + rehydration delay | Hours | Long-term compliance retention |
Go deeper
Related to this question
Learn chapter
Blob Versioning and Soft Delete
Key term
Blob
A blob is a large piece of unstructured data, like a photo or video, stored in the cloud with a unique identifier.
Key term
Archive tier
Archive tier is an ultra-low-cost Azure Blob Storage access tier designed for long-term retention of data that is rarely accessed and can tolerate hours of retrieval latency.
About these practice questions
Courseiva writes every AZ-104 question from scratch — 1,049 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This AZ-104 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 AZ-104 exam.