Plan and configure a high availability and disaster recovery environment →easyMultiple ChoiceObjective-mapped
DP-300 Practice Question: Plan and configure a high availability and disaster recovery environment
Your company wants to ensure business continuity for an Azure SQL Database that is used by a critical application. The database must remain available in the event of a single availability zone failure within a region. Which configuration should you use?
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
✓
Configure zone-redundant availability for the database
Azure SQL Database zone-redundant availability replicates the database across multiple availability zones within the same region, providing high availability in the event of a single zone failure. Option B (active geo-replication) replicates to a different region, which protects against regional outages but not specifically a zone failure. Option C (locally redundant storage) stores data within a single data center, offering no zone-level protection. Option D (read scale-out) provides read-only replicas but does not ensure write availability during a zone failure.
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 zone-redundant availability for the database
Why this is correct
Zone redundancy replicates across zones within a region.
- ✗
Use active geo-replication to a different region
Why it's wrong here
Geo-replication protects against regional outage, not zone failure.
- ✗
Deploy the database with locally redundant storage
Why it's wrong here
LRS replicates within a single zone, not across zones.
- ✗
Configure read scale-out with a secondary replica
Why it's wrong here
Read scale-out provides read-only replicas but not high availability for writes.
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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