AZ-104 Implement and Manage Storage Practice Question
Users in Branch01 access an Azure file share over SMB. Performance is poor because frequently used files are downloaded repeatedly across the WAN. You need to keep a local cache on a Windows Server in Branch01 while keeping Azure Files as the central file share. What should you deploy?
⚠ Common exam trap
Watch out — candidates often confuse Azure File Sync with simply mounting an Azure file share via SMB or using a private endpoint, not realizing that File Sync specifically provides a local caching mechanism on a Windows Server to solve WAN latency issues.
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
✓
Azure File Sync
Azure File Sync is the correct solution because it enables caching of Azure file shares on a Windows Server at the branch location, providing local access to frequently used files while keeping Azure Files as the central authoritative store. It uses a sync engine to maintain a local cache and leverages the SMB protocol for access, reducing WAN latency by serving files from the local server.
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 extends an Azure file share to a Windows Server on-premises, creating a local cache that branch users can access over SMB with low latency. It continuously synchronizes changes bi-directionally between the local server and the Azure file share, keeping the cloud as the central authoritative store. Cloud tiering can be enabled so only frequently used files reside locally, while the rest remain in Azure.
- ✗
Blob versioning
Why it's wrong here
Blob versioning is a data-protection feature for Azure Blob Storage that automatically keeps snapshots of blob objects whenever they are modified or overwritten. It does not apply to Azure Files, and it has no mechanism to cache file-share contents or serve SMB traffic locally. Since it neither replicates data to a branch nor accelerates access, it is irrelevant to the branch-office SMB scenario.
When this WOULD be correct
A question requiring protection against accidental deletion or overwrite of blobs in Azure Blob Storage, where you need to preserve, restore, or manage earlier versions of blobs. For example: 'You need to enable the ability to restore a previous version of a blob that was overwritten. What should you configure?'
- ✗
Share snapshots
Why it's wrong here
Share snapshots provide point-in-time read-only copies of an Azure file share, which administrators can use to restore files after accidental deletion or ransomware attacks. These snapshots remain stored in Azure and are accessed over the network; they are not replicated to a branch server and do not create a caching tier. Hence, they are a recovery tool, not a performance or caching solution for branch users.
When this WOULD be correct
A question asks: 'You need to protect an Azure file share from accidental deletion or corruption by enabling point-in-time restore capabilities. What should you configure?' In that case, share snapshots are the correct answer.
- ✗
A private endpoint
Why it's wrong here
A private endpoint maps the Azure file share to a private IP inside a virtual network, removing public internet exposure and tightening security. However, it does not place any data on branch servers; the branch device still must reach Azure over the network for every SMB operation. Consequently, it has no impact on caching or offline access, making it unsuitable for improving branch-connectivity performance.
When this WOULD be correct
A private endpoint would be correct if the question required securely connecting to Azure Files from an on-premises network without exposing the service to the public internet, such as when compliance mandates that all traffic must stay within the Azure backbone and not traverse the internet.
Option-by-option analysis
Why each answer is right or wrong
Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The AZ-104 exam frequently reuses these exact scenarios with slightly different constraints.
✓Azure File SyncCorrect answer▾
Why this is correct
Azure File Sync extends an Azure file share to a Windows Server on-premises, creating a local cache that branch users can access over SMB with low latency. It continuously synchronizes changes bi-directionally between the local server and the Azure file share, keeping the cloud as the central authoritative store. Cloud tiering can be enabled so only frequently used files reside locally, while the rest remain in Azure.
✗Blob versioningWrong answer — click to see why▾
Why this is wrong here
Blob versioning maintains multiple versions of blobs in Azure Storage, but it does not provide local caching or sync capabilities for SMB file shares. It is designed for object-level version control, not for caching files locally to reduce WAN latency.
★ When this WOULD be the correct answer
A question requiring protection against accidental deletion or overwrite of blobs in Azure Blob Storage, where you need to preserve, restore, or manage earlier versions of blobs. For example: 'You need to enable the ability to restore a previous version of a blob that was overwritten. What should you configure?'
Why candidates choose this
Candidates may confuse versioning with caching or sync, thinking that maintaining multiple versions could somehow keep a local copy, or they may misapply blob storage concepts to file shares.
✗Share snapshotsWrong answer — click to see why▾
Why this is wrong here
Share snapshots provide point-in-time read-only copies of files for recovery, not local caching or synchronization. They do not keep a local cache on a Windows Server to reduce WAN traffic.
★ When this WOULD be the correct answer
A question asks: 'You need to protect an Azure file share from accidental deletion or corruption by enabling point-in-time restore capabilities. What should you configure?' In that case, share snapshots are the correct answer.
Why candidates choose this
Candidates may confuse share snapshots with caching or sync features, thinking snapshots can be used to store local copies, but snapshots are read-only and not designed for continuous local access.
✗A private endpointWrong answer — click to see why▾
Why this is wrong here
A private endpoint provides secure, private connectivity to Azure Files over the Microsoft backbone, but it does not create a local cache on-premises. The requirement is to cache files locally on a Windows Server in Branch01, which Azure File Sync does by syncing files to the server.
★ When this WOULD be the correct answer
A private endpoint would be correct if the question required securely connecting to Azure Files from an on-premises network without exposing the service to the public internet, such as when compliance mandates that all traffic must stay within the Azure backbone and not traverse the internet.
Why candidates choose this
Candidates may confuse private endpoints with improving performance, thinking that a private connection eliminates WAN latency, but it does not address the need for a local cache to avoid repeated downloads of frequently used files.
Analysis generated from the official AZ-104blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
Go deeper
Related to this question
Learn chapter
Managed Identities for Azure Resources
Key term
Azure Files
Azure Files is a cloud-based file sharing service that lets you create and access file shares using the Server Message Block (SMB) protocol or Network File System (NFS) protocol, just like you would access files on a local network drive.
Key term
File share
A file share is a centralized storage location on a network where multiple users can access, read, write, and manage files simultaneously.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This AZ-104 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the AZ-104 exam.