The correct answer is to enable cloud tiering on the server endpoint and set a volume free space policy. This configuration works because cloud tiering intelligently caches only the most frequently accessed files locally on the on-premises server, while tiering infrequently used files to Azure, and the volume free space policy dictates exactly how much local disk capacity is reserved for that hot cache. On the AZ-204 exam, this scenario tests your understanding of Azure File Sync’s hybrid storage behavior, often appearing in questions about balancing local performance with cloud cost savings. A common trap is confusing the server endpoint’s cloud tiering with the cloud endpoint’s sync settings, or thinking that a date-based policy alone controls caching—but the volume free space policy is what ensures only the most accessed files stay local. Memory tip: think “free space = fast cache” to remember that the volume free space policy reserves room for your hottest files.
AZ-204 Develop for Azure storage Practice Question
This AZ-204 practice question tests your understanding of develop for azure storage. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 using Azure File Sync to sync on-premises file shares to Azure. You need to ensure that files are cached locally on the on-premises server for fast access, but only the most frequently accessed files should be cached. What should you configure?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Enable cloud tiering on the server endpoint and set a volume free space policy.
Cloud tiering on an Azure File Sync server endpoint allows you to keep only frequently accessed files cached locally while infrequently accessed files are tiered to Azure. By setting a volume free space policy, you control how much local disk space is reserved for frequently accessed files, ensuring that only the most accessed files remain cached. This directly meets the requirement of caching only the most frequently accessed files locally.
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.
✗
Configure a caching rule using Azure File Sync's built-in cache size limit.
Why it's wrong here
No such built-in caching rule exists.
✗
Configure a sync group with a custom server endpoint that filters files by last access time.
Why it's wrong here
Azure File Sync does not support file-level filtering by last access time.
✓
Enable cloud tiering on the server endpoint and set a volume free space policy.
Why this is correct
Cloud tiering automatically manages local caching based on access frequency.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use the Invoke-AzStorageSyncFileRecall cmdlet to recall files on demand.
Why it's wrong here
This cmdlet manually recalls files; not automatic caching.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse cloud tiering with manual recall or think they can filter files by access time via sync group settings, but Azure File Sync's cloud tiering is the only built-in mechanism that automatically manages local caching based on access frequency.
Detailed technical explanation
How to think about this question
Cloud tiering works by monitoring file access patterns via the file system's last access time attribute (which must be enabled on the volume). When the volume free space threshold is reached, the File Sync agent tiers the least recently accessed files to Azure, replacing them with a reparse point. The volume free space policy ensures that a specified percentage of local disk space remains free, automatically evicting cold files to maintain that buffer. In real-world scenarios, this is critical for servers with limited local storage that need to serve large file shares efficiently.
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-204 question in full detail.
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: Enable cloud tiering on the server endpoint and set a volume free space policy. — Cloud tiering on an Azure File Sync server endpoint allows you to keep only frequently accessed files cached locally while infrequently accessed files are tiered to Azure. By setting a volume free space policy, you control how much local disk space is reserved for frequently accessed files, ensuring that only the most accessed files remain cached. This directly meets the requirement of caching only the most frequently accessed files locally.
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.
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Question Discussion
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