Quick Answer
The answer is the Cool access tier. This is correct because Cool tier provides low-cost storage for infrequently accessed data while maintaining immediate availability with millisecond latency, unlike the Archive tier which requires hours-long rehydration before data can be read. On the AZ-104 exam, this question tests your understanding of Azure Blob Storage access tiers and their trade-offs between cost and retrieval speed; a common trap is choosing Archive to save the most money, forgetting that Archive data is offline and cannot be read within seconds. To remember this, think of the phrase “Cool is quick, Archive is asleep”—Cool keeps data instantly accessible, while Archive must be woken up first.
This AZ-104 practice question tests your understanding of implement and manage storage. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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.
Your company stores monthly reports in Azure Blob Storage. The reports are rarely accessed, but when needed they must be read within seconds rather than hours. You need to minimize storage cost while preserving near-immediate availability. Which access tier should you use?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "minimum / minimize"
Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
Hot
Why wrong: Hot is optimized for frequently accessed data and would cost more than necessary.
Cool
Cool minimizes cost for infrequently accessed data while keeping it available online.
Archive
Why wrong: Archive requires rehydration and does not provide near-immediate access.
Premium
Why wrong: Premium is for high-performance workloads, not low-cost infrequently accessed reports.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Cool
Cool tier is correct because it offers low storage cost for infrequently accessed data while maintaining near-immediate (milliseconds) retrieval latency. The reports are rarely accessed but must be available within seconds, which Cool tier satisfies, whereas Archive would incur hours-long rehydration delays.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Hot
Why it's wrong here
Hot is optimized for frequently accessed data and would cost more than necessary.
Cool
Why this is correct
Cool minimizes cost for infrequently accessed data while keeping it available online.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Archive
Why it's wrong here
Archive requires rehydration and does not provide near-immediate access.
Premium
Why it's wrong here
Premium is for high-performance workloads, not low-cost infrequently accessed reports.
Common exam traps
The trap here is that candidates often choose Archive tier thinking it is the cheapest option for rarely accessed data, but they overlook the critical requirement for 'within seconds' availability, which Archive cannot provide without a time-consuming rehydration process.
Detailed technical explanation
Azure Blob Storage access tiers are managed at the blob level via the x-ms-access-tier header. Cool tier offers a 30-day early deletion penalty for blobs moved to Cool and then deleted, but this is irrelevant here as the data is rarely accessed. Under the hood, Cool tier uses lower-cost HDD-based storage with the same REST API latency as Hot tier, ensuring sub-second reads without rehydration. In a real-world scenario, if the reports were accessed only quarterly, Cool tier balances cost and availability perfectly, whereas Archive would require a rehydration step (changing tier to Cool or Hot) that could take hours.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
What to study next
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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FAQ
Implement and Manage Storage — This question tests Implement and Manage Storage — Read the scenario before looking for a memorised answer..
The correct answer is: Cool — Cool tier is correct because it offers low storage cost for infrequently accessed data while maintaining near-immediate (milliseconds) retrieval latency. The reports are rarely accessed but must be available within seconds, which Cool tier satisfies, whereas Archive would incur hours-long rehydration delays.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Yes — watch for: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
Read the scenario before looking for a memorised answer.
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Same concept, more angles
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 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?
mediumWhy D: 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.
Last reviewed: Jun 11, 2026
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