DP-300 Plan and implement data platform resources Practice Question
A retail company is migrating its on-premises SQL Server database to Azure SQL Database. The database has a table with 500 million rows and receives 10,000 INSERT operations per second during peak hours. The application requires read-committed snapshot isolation. Which Azure SQL Database tier and configuration should the DBA recommend to minimize cost while meeting performance requirements?
⚠ Common exam trap
Many candidates choose General Purpose (C) due to its lower cost, overlooking that it cannot sustain 10,000 INSERTs/second and does not natively support read-committed snapshot isolation without explicit configuration, while Hyperscale (D) is designed for such large-scale, high-throughput workloads with built-in RCSI.
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
✓
Hyperscale tier with 4 vCores
The Hyperscale tier with 4 vCores is correct because it supports up to 100 TB of storage, provides fast scaling for high-volume INSERT workloads (10,000 rows/second), and natively supports read-committed snapshot isolation (RCSI) without additional configuration. It minimizes cost compared to Business Critical while offering the necessary performance and isolation level for a 500-million-row table.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Business Critical tier with 8 vCores
Why it's wrong here
Business Critical is more expensive than needed.
- ✗
Serverless tier with auto-pause
Why it's wrong here
Serverless may not sustain 10,000 INSERTs/sec.
- ✗
General Purpose tier with 2 vCores
Why it's wrong here
General Purpose may not handle the throughput and RCSI is not enabled by default.
- ✓
Hyperscale tier with 4 vCores
Why this is correct
Hyperscale supports high INSERT throughput and RCSI is enabled by default.
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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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.