- A
Use read-access geo-redundant storage (RA-GRS) and direct customers to the secondary endpoint for reads.
Why wrong: RA-GRS does not cache, and egress costs apply from the secondary region.
- B
Use Premium Block Blob storage in multiple regions and use Traffic Manager for routing.
Why wrong: Premium storage is costly and does not inherently cache; Traffic Manager does not cache.
- C
Use Azure CDN from Microsoft with the storage account as origin, and enable geo-replication on the storage account.
Why wrong: CDN caches but does not provide active failover; geo-replication adds complexity and cost.
- D
Use Azure Front Door with caching enabled, and point it to a single Blob Storage account in East US.
Front Door caches at edges, reduces egress, and provides failover to a secondary origin if configured.
AZ-204 Develop for Azure storage Practice Question
This AZ-204 practice question tests your understanding of develop for azure 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 are a developer at a global e-commerce company. The company uses Azure Blob Storage to store product images and customer uploads. The application is deployed in the East US region. You need to design a solution that meets the following requirements: - Customers upload images (up to 10 MB) that must be immediately accessible worldwide after upload. - You must minimize egress costs for data transfer from Azure to customers. - The solution must be resilient to regional outages. - You must not use any custom caching logic. Which approach should you implement?
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.
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.
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
Use Azure Front Door with caching enabled, and point it to a single Blob Storage account in East US.
Option A is correct. Azure Front Door provides global load balancing and caching at edge locations, reducing latency and egress costs by serving cached content from the closest edge. It also provides regional failover. Option B is incorrect because CDN alone does not provide regional failover or origin load balancing. Option C is incorrect because RA-GRS provides a secondary read endpoint but does not cache globally; egress costs are still incurred from the secondary region. Option D is incorrect because Premium Blob Storage does not provide global caching or failover.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use read-access geo-redundant storage (RA-GRS) and direct customers to the secondary endpoint for reads.
Why it's wrong here
RA-GRS does not cache, and egress costs apply from the secondary region.
- ✗
Use Premium Block Blob storage in multiple regions and use Traffic Manager for routing.
Why it's wrong here
Premium storage is costly and does not inherently cache; Traffic Manager does not cache.
- ✗
Use Azure CDN from Microsoft with the storage account as origin, and enable geo-replication on the storage account.
Why it's wrong here
CDN caches but does not provide active failover; geo-replication adds complexity and cost.
- ✓
Use Azure Front Door with caching enabled, and point it to a single Blob Storage account in East US.
Why this is correct
Front Door caches at edges, reduces egress, and provides failover to a secondary origin if configured.
Clue confirmation
The clue words "minimum / minimize", "immediately / without restart" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
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
Got this wrong? Here's your next step.
Identify which AZ-204 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
- →
Develop for Azure storage — study guide chapter
Learn the concepts, then practise the questions
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Develop for Azure storage practice questions
Targeted practice on this topic area only
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Microsoft Azure Developer Associate AZ-204 study guide
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FAQ
Questions learners often ask
What does this AZ-204 question test?
Develop for Azure storage — This question tests Develop for Azure storage — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use Azure Front Door with caching enabled, and point it to a single Blob Storage account in East US. — Option A is correct. Azure Front Door provides global load balancing and caching at edge locations, reducing latency and egress costs by serving cached content from the closest edge. It also provides regional failover. Option B is incorrect because CDN alone does not provide regional failover or origin load balancing. Option C is incorrect because RA-GRS provides a secondary read endpoint but does not cache globally; egress costs are still incurred from the secondary region. Option D is incorrect because Premium Blob Storage does not provide global caching or failover.
What should I do if I get this AZ-204 question wrong?
Identify which AZ-204 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Are there clue words in this question I should notice?
Yes — watch for: "minimum / minimize", "immediately / without restart". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
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Last reviewed: Jun 21, 2026
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