AZ-802 Manage Storage and File Services Practice Question
You plan to implement Storage Replica between two Windows Server 2022 clusters in different cities. The network connection between the sites has a consistent round-trip latency of 20ms. Which replication mode should you implement to ensure application performance is not negatively impacted by storage writes?
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
✓
Asynchronous replication
Storage Replica offers two modes: synchronous and asynchronous. Synchronous replication requires low latency (typically <5ms) because the application must wait for an acknowledgment from the destination before the write is completed. For high-latency connections, asynchronous replication is necessary to prevent storage I/O from becoming a performance bottleneck.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
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Synchronous replication
Why it's wrong here
Synchronous replication requires that data be written to both the local and remote sites before the operation is considered complete. With a 20ms latency, this would cause a massive performance hit to applications, as every single write operation would be delayed by the round-trip network time.
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Asynchronous replication
Why this is correct
Asynchronous replication allows the local write to complete immediately, with data being sent to the remote site shortly after. This is the correct choice for high-latency connections over 5ms, as it preserves application performance while still providing a disaster recovery copy at the secondary location.
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Block-level mirroring
Why it's wrong here
While Storage Replica does operate at the block level, 'Block-level mirroring' is a general description of the technology rather than a specific replication mode option in Windows Server. You must choose between the synchronous or asynchronous operational modes based on the network capabilities and application requirements.
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DFS Replication
Why it's wrong here
DFS Replication is a file-based replication technology rather than a block-based storage replication solution. It is not suitable for replicating entire volumes or cluster storage, and it does not provide the same crash-consistency guarantees required for database or virtual machine workloads during a site-level failover.
Visual reference
About these practice questions
One of 116 original AZ-802 practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official Microsoft exam blueprint
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