The answer is Azure File Sync. This service is correct because it uses a sync agent installed on the on-premises Windows file server to replicate files to an Azure file share, enabling bidirectional synchronization that keeps the local server fully operational while maintaining cloud-based copies for branch offices. On the AZ-104 exam, this question tests your ability to distinguish Azure File Sync from other storage solutions like Azure Blob Storage or simple Azure Files mounts, which lack native sync capabilities; a common trap is confusing Azure File Sync with Azure Backup, but remember that sync provides continuous replication, not just scheduled backups. The key memory tip is to think of the word “sync” in the name—it directly implies two-way, ongoing file synchronization between your on-premises server and the cloud.
AZ-104 Implement and Manage Storage Practice Question
This AZ-104 practice question tests your understanding of implement and manage 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 need to synchronize an on-premises Windows file server with an Azure file share so that branch offices can continue using the local server while keeping cloud-based copies of the files. Which service 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
✓
Azure File Sync
Azure File Sync is the correct service because it enables you to centralize your on-premises file shares in Azure Files while maintaining local access to the data. It uses a sync agent installed on the Windows file server to replicate files to an Azure file share, allowing branch offices to continue using the local server with cloud-based copies for backup, disaster recovery, or multi-site access. This directly meets the requirement of keeping the on-premises server operational while maintaining cloud copies.
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.
✓
Azure File Sync
Why this is correct
Azure File Sync is designed to synchronize on-premises Windows file servers with Azure file shares.
Related concept
Read the scenario before looking for a memorised answer.
✗
Blob versioning
Why it's wrong here
Blob versioning applies to blobs, not synchronization of Windows file shares.
✗
Azure NetApp Files
Why it's wrong here
Azure NetApp Files is a different managed file storage offering and does not synchronize an existing Windows file server in this way.
✗
Storage account failover
Why it's wrong here
Failover changes the active region for a storage account and does not synchronize on-premises files.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Azure File Sync with Azure NetApp Files or Blob storage features, mistakenly thinking that any cloud storage service can synchronize on-premises data, but only Azure File Sync provides bidirectional sync with an on-premises Windows file server.
Detailed technical explanation
How to think about this question
Azure File Sync uses the File Sync agent to register the on-premises Windows Server with a Storage Sync Service, which then manages sync groups and cloud endpoints (Azure file shares) and server endpoints (local paths). The sync engine uses a change-tracking mechanism based on NTFS USN journaling to detect file changes and replicate them incrementally, supporting multi-site sync with conflict resolution via 'last writer wins'. A real-world scenario is a branch office with limited bandwidth where Azure File Sync can be configured with cloud tiering to keep only frequently accessed files locally, freeing up on-premises storage while all files remain accessible via the cloud.
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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-104 question in full detail.
Implement and Manage Storage — This question tests Implement and Manage Storage — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Azure File Sync — Azure File Sync is the correct service because it enables you to centralize your on-premises file shares in Azure Files while maintaining local access to the data. It uses a sync agent installed on the Windows file server to replicate files to an Azure file share, allowing branch offices to continue using the local server with cloud-based copies for backup, disaster recovery, or multi-site access. This directly meets the requirement of keeping the on-premises server operational while maintaining cloud copies.
What should I do if I get this AZ-104 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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