AZ-104 Implement and Manage Storage Practice Question
A records team stores monthly regulatory exports in a blob container. The files are rarely opened, but auditors may request one specific file later the same day. The team wants the lowest storage cost possible while keeping a path to restore a single file on demand. Which approach should you use?
⚠ Common exam trap
Many exam-takers confuse the Archive tier's offline nature with the Cool or Cold tiers, or assume that the lowest storage cost must come from an online tier, ignoring that Archive's rehydration feature still allows on-demand retrieval at a higher retrieval cost but lower overall storage expense.
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
✓
Move the blobs to the Archive tier and use high-priority rehydration when a file is requested.
The Archive tier offers the lowest storage cost for rarely accessed data, and high-priority rehydration allows a single file to be restored within approximately one hour, meeting the auditor's same-day request requirement. This approach minimizes cost while retaining the ability to retrieve a specific file on demand.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Keep the blobs in the Hot tier and rely on lifecycle rules to delete them after 90 days.
Why it's wrong here
Keeping blobs in the Hot tier and simply adding a lifecycle rule to delete them after 90 days misses the core requirement: the regulatory exports must be retained long-term for compliance, not deleted. The Hot tier has the highest storage cost and is designed for frequent, active access, so it is the opposite of an economical choice for monthly archived files. Lifecycle policies only automate deletion or tier transitions; they do not reduce the per-GB cost of the Hot tier while the data remains there, so using Hot would unnecessarily inflate storage costs.
When this WOULD be correct
This would be correct if the requirement was to minimize cost for frequently accessed data that must be retained for exactly 90 days and then automatically deleted, with no need for later restore.
- ✓
Move the blobs to the Archive tier and use high-priority rehydration when a file is requested.
Why this is correct
Archive is the correct storage tier when the files are rarely accessed and cost reduction is the priority. Archived blobs are offline, so they cannot be read immediately. However, if auditors need one file later the same day, the administrator can initiate rehydration. High-priority rehydration is the best choice when faster access is needed for a specific archived blob and the team is willing to pay for the quicker retrieval path.
- ✗
Move the blobs to the Cool tier because it is offline until accessed.
Why it's wrong here
The Cool tier is also an online tier, not an offline tier; blobs in Cool storage can be accessed instantly with no rehydration or 'warming up' procedure. The only offline tier in Azure Blob Storage is Archive, which intentionally keeps blobs off the hot path to minimize cost. Describing Cool as offline until accessed confuses it with Archive, and choosing Cool would still cost more than Archive for data accessed only a few times per year, while failing to match the required restore behavior.
When this WOULD be correct
This option would be correct if the question asked for the lowest cost for data that is accessed infrequently but must be available immediately when accessed, with no need for rehydration. For example: 'You have data that is accessed once a month and requires instant read access. Which tier minimizes cost?'
- ✗
Use the Cold tier because it requires a rehydration job before the blob becomes readable.
Why it's wrong here
The Cold tier is an online access tier in Azure Blob Storage, meaning blobs in Cold storage are immediately readable without any prior restore step. Unlike the Archive tier, Cold does not require a rehydration job at all; blobs are always available for low-latency access. Therefore, saying Cold requires rehydration before reading is factually incorrect, and it would also not yield the same cost savings as Archive for extremely rare, long-term regulatory exports.
When this WOULD be correct
If the question stated that files are rarely accessed and retrieval can be delayed by up to 15 hours, and cost is the primary concern, the Cold tier would be correct.
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.
✓Move the blobs to the Archive tier and use high-priority rehydration when a file is requested.Correct answer▾
Why this is correct
Archive is the correct storage tier when the files are rarely accessed and cost reduction is the priority. Archived blobs are offline, so they cannot be read immediately. However, if auditors need one file later the same day, the administrator can initiate rehydration. High-priority rehydration is the best choice when faster access is needed for a specific archived blob and the team is willing to pay for the quicker retrieval path.
✗Keep the blobs in the Hot tier and rely on lifecycle rules to delete them after 90 days.Wrong answer — click to see why▾
Why this is wrong here
The Hot tier has the highest storage cost, and lifecycle rules that delete after 90 days do not provide a path to restore a single file on demand after deletion. The requirement is for low-cost storage with on-demand restore, not deletion.
★ When this WOULD be the correct answer
This would be correct if the requirement was to minimize cost for frequently accessed data that must be retained for exactly 90 days and then automatically deleted, with no need for later restore.
Why candidates choose this
Candidates may think Hot tier is always the default for any blob storage, and lifecycle rules seem like a cost-saving measure, overlooking that Hot tier is expensive for rarely accessed data and deletion prevents on-demand restore.
✗Move the blobs to the Cool tier because it is offline until accessed.Wrong answer — click to see why▾
Why this is wrong here
The Cool tier is an online tier with low latency access; it does not require rehydration and is not offline. It offers lower cost than Hot but higher than Archive, so it does not achieve the lowest storage cost for rarely accessed files.
★ When this WOULD be the correct answer
This option would be correct if the question asked for the lowest cost for data that is accessed infrequently but must be available immediately when accessed, with no need for rehydration. For example: 'You have data that is accessed once a month and requires instant read access. Which tier minimizes cost?'
Why candidates choose this
Candidates may confuse 'Cool' with 'Cold' or 'Archive' tiers, thinking it is offline or requires rehydration, or they may assume 'cool' implies lower cost without understanding the access trade-offs.
✗Use the Cold tier because it requires a rehydration job before the blob becomes readable.Wrong answer — click to see why▾
Why this is wrong here
The Cold tier is offline and requires a rehydration job before reading, which can take up to 15 hours, making it unsuitable for same-day retrieval requests from auditors.
★ When this WOULD be the correct answer
If the question stated that files are rarely accessed and retrieval can be delayed by up to 15 hours, and cost is the primary concern, the Cold tier would be correct.
Why candidates choose this
Candidates may confuse the Cold tier with the Archive tier, thinking both require rehydration, but Cold tier has lower cost than Cool/Hot while still being cheaper than Archive for infrequent 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
Customer-Managed Keys (CMK) for Storage Encryption
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
Container
A container is a lightweight, standalone software package that includes everything needed to run an application, such as code, runtime, system tools, and libraries.
About these practice questions
This AZ-104 question is part of Courseiva's 1,049-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
Same concept, more angles
1 more way this is tested on AZ-104
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A legal department stores scanned contracts that are kept for compliance and are almost never opened. They want the lowest storage cost, and it is acceptable if files take time to become available before download. Which blob tier should you choose?
easy- A.Hot
- B.Cool
- ✓ C.Archive
- D.Cold
Why C: The Archive tier is the lowest-cost storage tier in Azure Blob Storage, designed for rarely accessed data. It requires rehydration (which can take up to 15 hours) before data becomes available. The Cold tier is also a valid tier, but it offers higher storage cost than Archive and faster retrieval. For compliance data that is almost never opened and where delayed access is acceptable, Archive is the correct choice.
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.