- A
Enable static website hosting and configure a custom domain directly on the storage account.
Why wrong: Enabling static website hosting and configuring a custom domain on the storage account does not add edge caching, so it will not provide low latency for global users. This option is incorrect.
- B
Create an Azure CDN endpoint with a custom domain and point it to the blob container.
Correct. Azure CDN caches blob content at edge locations worldwide, reducing latency. A custom domain can be added to the CDN endpoint.
- C
Configure a custom domain in Azure DNS and point it to the storage account endpoint.
Why wrong: Configuring a custom domain in Azure DNS and pointing it to the storage account endpoint bypasses any caching layer, resulting in higher latency for users far from the storage account region. This option is incorrect.
- D
Use Azure Front Door with a custom domain.
Correct. Azure Front Door also offers global caching and custom domain support, similar to CDN, and can serve static images with low latency. It is suitable for this requirement.
Serve Static Images from Custom Domain using Azure CDN
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.
Your application stores user profile images in Azure Blob Storage. You need to serve these images to users with low latency from a domain name that you own. What should you use?
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
Create an Azure CDN endpoint with a custom domain and point it to the blob container.
Both Azure CDN and Azure Front Door provide global edge caching, which reduces latency for serving static images from Blob Storage. By configuring a custom domain on either service, you can serve content under your own domain name while benefiting from edge cache acceleration. Option B (Azure CDN) is a cost-effective solution for caching blob content, and Option D (Azure Front Door) offers additional capabilities like global load balancing and SSL termination, also meeting the low-latency and custom domain requirements.
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.
- ✗
Enable static website hosting and configure a custom domain directly on the storage account.
Why it's wrong here
Enabling static website hosting and configuring a custom domain on the storage account does not add edge caching, so it will not provide low latency for global users. This option is incorrect.
- ✓
Create an Azure CDN endpoint with a custom domain and point it to the blob container.
Why this is correct
Correct. Azure CDN caches blob content at edge locations worldwide, reducing latency. A custom domain can be added to the CDN endpoint.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Configure a custom domain in Azure DNS and point it to the storage account endpoint.
Why it's wrong here
Configuring a custom domain in Azure DNS and pointing it to the storage account endpoint bypasses any caching layer, resulting in higher latency for users far from the storage account region. This option is incorrect.
- ✓
Use Azure Front Door with a custom domain.
Why this is correct
Correct. Azure Front Door also offers global caching and custom domain support, similar to CDN, and can serve static images with low latency. It is suitable for this requirement.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Azure CDN with Azure Front Door or static website hosting, assuming any custom domain on a storage account automatically provides low latency, but only CDN adds the necessary edge caching layer for static blob content.
Detailed technical explanation
How to think about this question
Azure CDN (e.g., from Microsoft or Verizon) caches blob content at edge nodes (Points of Presence) worldwide, serving requests from the nearest node to the user. The custom domain is configured via a CNAME record in your DNS provider that maps to the CDN endpoint hostname (e.g., `.azureedge.net`), and the CDN endpoint is linked to the blob container as its origin. This setup ensures that even if the storage account is in a single region, users globally experience low latency due to edge caching.
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.
TExam Day Tips
- 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.
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 |
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
- →
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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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: Create an Azure CDN endpoint with a custom domain and point it to the blob container. — Both Azure CDN and Azure Front Door provide global edge caching, which reduces latency for serving static images from Blob Storage. By configuring a custom domain on either service, you can serve content under your own domain name while benefiting from edge cache acceleration. Option B (Azure CDN) is a cost-effective solution for caching blob content, and Option D (Azure Front Door) offers additional capabilities like global load balancing and SSL termination, also meeting the low-latency and custom domain requirements.
What should I do if I get this AZ-204 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
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Last reviewed: Jun 24, 2026
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