AZ-104 Implement and Manage Storage Practice Question
A compliance team keeps signed contract scans in Azure Blob Storage. The files are usually read only a few times per year, but when a reviewer needs one, it must be available immediately without waiting for rehydration. Which access tier should the administrator use?
⚠ Common exam trap
Test-takers frequently confuse 'lowest cost' (Archive) with 'immediate availability,' forgetting that Archive requires a rehydration process that can take hours, making it unsuitable for on-demand access.
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
✓
Cold, because it is designed for infrequently accessed data and remains online for immediate reads.
The Cold access tier is designed for data that is infrequently accessed but must remain online and immediately readable without any rehydration delay. Since the compliance team needs instant access to contract scans when requested, Cold tier provides low-cost storage while keeping data online, unlike Archive which requires rehydration.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Hot, because it is optimized for frequent access and immediate retrieval.
Why it's wrong here
Hot tier is optimized for frequent access with the highest storage cost, which is unnecessary for compliance scans of signed contracts that are seldom read. While it is online and immediately readable, using Hot for this workload would incur significantly higher storage charges without any added benefit, because the data rarely needs to be accessed. The performance and throughput features of Hot are wasted on data that is mostly dormant, making it the least cost-effective option among the online tiers.
When this WOULD be correct
An administrator needs to store data that is accessed and modified frequently, such as streaming video or active transaction logs, and requires the lowest latency access with no retrieval costs.
- ✗
Cool, because it is online and suited to infrequent access while remaining immediately readable.
Why it's wrong here
Cool is an online, immediately readable tier that suits infrequent access, but it is not the best fit here because Cold provides the same immediate-read capability at a lower storage price for data accessed as rarely as signed contracts. The Cool tier also has a 30-day minimum retention period and higher per-GB costs than Cold, making it a more expensive choice for this compliance workload. Since the data must be available instantly but is rarely read, Cold is the more cost-optimized online tier.
When this WOULD be correct
A company stores monthly sales reports that are accessed about once a month for review. The administrator needs immediate access without rehydration and wants lower cost than Hot tier. Cool tier would be correct.
- ✗
Archive, because it is the lowest-cost option and can still be read instantly.
Why it's wrong here
The Archive tier is the lowest storage-cost option, but it is not online-readable: blobs are in an offline state and must be rehydrated to a hot, cool, or cold tier before access, a process that can take up to 15 hours. Therefore, it cannot satisfy the requirement for immediate reads. Additionally, a rehydration operation incurs costs and latency, so the 'lowest cost' assumption ignores the real price of making the data available.
When this WOULD be correct
For long-term backup or compliance data that is rarely accessed and can tolerate hours of retrieval latency, such as regulatory records that must be retained for 7 years but are only accessed during audits with advance notice.
- ✓
Cold, because it is designed for infrequently accessed data and remains online for immediate reads.
Why this is correct
Cold is the best fit for data that is rarely read but must still be available immediately when needed. It keeps the blob online, unlike Archive, so there is no waiting for rehydration. This makes it suitable for compliance documents or records that are accessed occasionally but must open quickly during reviews.
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.
✓Cold, because it is designed for infrequently accessed data and remains online for immediate reads.Correct answer▾
Why this is correct
Cold is the best fit for data that is rarely read but must still be available immediately when needed. It keeps the blob online, unlike Archive, so there is no waiting for rehydration. This makes it suitable for compliance documents or records that are accessed occasionally but must open quickly during reviews.
✗Hot, because it is optimized for frequent access and immediate retrieval.Wrong answer — click to see why▾
Why this is wrong here
The Hot tier is optimized for frequent access (many times per month), but the scenario specifies files are read only a few times per year, making Hot unnecessarily expensive.
★ When this WOULD be the correct answer
An administrator needs to store data that is accessed and modified frequently, such as streaming video or active transaction logs, and requires the lowest latency access with no retrieval costs.
Why candidates choose this
Candidates may assume 'Hot' is always the best for immediate retrieval, overlooking that Cold also provides instant access at lower cost for infrequent use.
✗Cool, because it is online and suited to infrequent access while remaining immediately readable.Wrong answer — click to see why▾
Why this is wrong here
Cool tier is online and immediately readable, but it is designed for data accessed more than a few times per year (e.g., monthly). The question states files are read only a few times per year, making Cold tier more cost-effective while still online.
★ When this WOULD be the correct answer
A company stores monthly sales reports that are accessed about once a month for review. The administrator needs immediate access without rehydration and wants lower cost than Hot tier. Cool tier would be correct.
Why candidates choose this
Candidates may confuse 'infrequent access' with 'very infrequent access' and assume Cool is the standard tier for rarely accessed data, overlooking the existence of Cold tier for data accessed only a few times per year.
✗Archive, because it is the lowest-cost option and can still be read instantly.Wrong answer — click to see why▾
Why this is wrong here
Archive tier requires rehydration (up to 15 hours) before data can be read, contradicting the requirement for immediate availability without waiting.
★ When this WOULD be the correct answer
For long-term backup or compliance data that is rarely accessed and can tolerate hours of retrieval latency, such as regulatory records that must be retained for 7 years but are only accessed during audits with advance notice.
Why candidates choose this
Candidates focus on the lowest cost for infrequent access, overlooking the critical constraint of immediate retrieval; they assume Archive is still readable online like Cool or Cold tiers.
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
Managed Identities for Azure Resources
Key term
Compliance
Compliance is the process of ensuring that an organization follows laws, regulations, standards, and internal policies that apply to its operations and data handling.
Key term
Blob storage
Blob storage is a cloud service for storing large amounts of unstructured data, such as text or binary data, like documents, images, and videos.
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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.