DP-300 Plan and implement data platform resources Practice Question
You are deploying an Azure SQL Database for a new application that requires high availability with automatic failover within the same region. The database must be able to recover from a zonal failure without data loss. Which deployment option should you use?
⚠ Common exam trap
Many candidates confuse zone redundancy with geo-replication, assuming that any tier with failover groups or geo-replication can handle zonal failures, but only zone-redundant configurations within the same region guarantee zero data loss during a zonal outage.
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
✓
Business Critical tier with zone redundancy enabled
The Business Critical tier with zone redundancy enabled provides the highest level of availability within a single Azure region by synchronously replicating data across three different availability zones. This ensures that if one zone fails, automatic failover occurs with no data loss because all transactions are committed to at least two replicas before being acknowledged. This meets the requirement for zonal failure recovery without data loss.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Hyperscale tier with zone redundancy
Why it's wrong here
Hyperscale zone redundancy does not guarantee zero data loss for all scenarios.
- ✗
Standard tier with failover group
Why it's wrong here
Standard tier does not support zone redundancy.
- ✓
Business Critical tier with zone redundancy enabled
Why this is correct
Business Critical tier with zone redundancy provides zonal failover with zero data loss.
- ✗
Basic tier with active geo-replication
Why it's wrong here
Basic tier does not support zone redundancy.
Visual reference
Go deeper
Related to this question
Learn chapter
Overview of Azure Data Platform Options
Key term
Azure SQL Performance Tuning
Azure SQL Performance Tuning is the process of optimizing the speed and efficiency of queries and database operations in Microsoft Azure SQL Database or SQL Managed Instance to reduce latency and improve throughput.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This DP-300 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 DP-300 exam.