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.
You store long-term financial statements in Azure Blob Storage. The files are almost never accessed, but when they are needed they must be readable immediately without waiting for rehydration. You need to minimize cost. 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: "never"
Why it matters: Absolute qualifier. True only if the statement has zero exceptions — be cautious of options that seem obvious but break down in edge cases.
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.
Clue: "immediately / without restart"
Why it matters: Time or reboot constraint — the correct answer must take effect right away without requiring a reboot or reload.
Hot
Why wrong: Hot is intended for frequently accessed data and would cost more than necessary.
Cool
Cool provides lower cost for infrequently accessed data while keeping it immediately available.
Archive
Why wrong: Archive requires rehydration and does not support immediate access.
Premium
Why wrong: Premium is designed for high-performance scenarios, not low-cost archival-style data that must remain online.
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
The Cool access tier is optimal for data that is infrequently accessed but must be available immediately when needed, offering lower storage costs than Hot while maintaining low-latency read access. Archive would require rehydration (taking hours) before reading, violating the requirement for immediate readability. Hot is more expensive for long-term storage of rarely accessed data, and Premium is designed for high-performance workloads, not cost-efficient archival.
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 intended for frequently accessed data and would cost more than necessary.
Cool
Why this is correct
Cool provides lower cost for infrequently accessed data while keeping it immediately available.
Clue confirmation
The clue words "never", "minimum / minimize", "immediately / without restart" 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 support immediate access.
Premium
Why it's wrong here
Premium is designed for high-performance scenarios, not low-cost archival-style data that must remain online.
Common exam traps
The trap here is that candidates often choose Archive thinking it is the cheapest option, but they overlook the requirement for 'immediate readability without waiting for rehydration,' which Archive cannot satisfy.
Trap categories for this question
Scenario analysis trap
Premium is designed for high-performance scenarios, not low-cost archival-style data that must remain online.
Detailed technical explanation
Azure Blob Storage access tiers use different pricing models: Cool tier has lower storage cost (per GB/month) but higher access (read/write) costs compared to Hot, making it ideal for data with infrequent reads. The rehydration process for Archive involves changing the blob tier to Cool or Hot, which can take up to 15 hours (depending on priority), and during that time the blob is in an 'unavailable' state. For compliance scenarios like financial audits, where data must be accessible on demand but stored cheaply, Cool provides the right balance of cost and availability.
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
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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 — The Cool access tier is optimal for data that is infrequently accessed but must be available immediately when needed, offering lower storage costs than Hot while maintaining low-latency read access. Archive would require rehydration (taking hours) before reading, violating the requirement for immediate readability. Hot is more expensive for long-term storage of rarely accessed data, and Premium is designed for high-performance workloads, not cost-efficient archival.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Yes — watch for: "never", "minimum / minimize", "immediately / without restart". Absolute qualifier. True only if the statement has zero exceptions — be cautious of options that seem obvious but break down in edge cases.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 11, 2026
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