Plan and configure a high availability and disaster recovery environment →mediumMultiple ChoiceObjective-mapped
DP-300 Practice Question: Plan and configure a high availability and disaster recovery environment
You manage a critical database in Azure SQL Database that must recover within 5 minutes in case of a regional outage. You configure geo-replication. Which SKU guarantees the fastest failover time with the least data loss?
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 (BC)
Azure SQL Database Business Critical tier uses premium SSDs and in-memory technologies, providing the lowest RPO and fastest failover (typically <30 seconds). Hyperscale (A) has longer failover and higher RPO. General Purpose (B) has higher RPO. Serverless (D) is not suitable for geo-replication.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
General Purpose (GP)
Why it's wrong here
General Purpose has higher RPO.
- ✗
Hyperscale (HS)
Why it's wrong here
Hyperscale has longer failover and higher RPO.
- ✓
Business Critical (BC)
Why this is correct
Business Critical provides the lowest RPO and fastest failover.
- ✗
Serverless
Why it's wrong here
Serverless does not support geo-replication.
Quick reference
Cloud Service Model Comparison
| Model | You Manage | Provider Manages | Examples |
|---|---|---|---|
| IaaS | OS, runtime, apps, data | Hardware, hypervisor, networking | EC2, Azure VMs, GCP Compute Engine |
| PaaS | Apps and data | OS, runtime, middleware, hardware | Elastic Beanstalk, Azure App Service |
| SaaS | Data and settings only | Everything else | Microsoft 365, Salesforce, Workday |
| FaaS / Serverless | Function code only | Infra, scaling, runtime | Lambda, Azure Functions, Cloud Run |
| CaaS | Containers and apps | Kubernetes, OS, hardware | EKS, AKS, GKE |
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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