DP-300 Practice Question: Monitor, configure, and optimize database resources
Which THREE factors should you consider when choosing between vCore and DTU purchase models for Azure SQL Database performance optimization?
⚠ Common exam trap
A common mix-up: candidates assume Azure Hybrid Benefit or elastic pools are exclusive to one model, when in fact both features are available across vCore and DTU, leading to incorrect elimination of correct options like B, C, and D.
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
✓
DTU is simpler for customers who want a bundled metric.
The DTU (Database Transaction Unit) model bundles compute, storage, and I/O into a single, simple metric, making it easier for customers who want a straightforward, pre-configured performance tier without needing to manage individual resources. This contrasts with the vCore model, which requires separate configuration of vCores, memory, and storage, offering more granular control but greater complexity.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Only vCore supports Azure Hybrid Benefit.
Why it's wrong here
Both support Azure Hybrid Benefit.
- ✓
DTU is simpler for customers who want a bundled metric.
Why this is correct
DTU combines compute, storage, and I/O.
- ✓
vCore allows reserved instance pricing for cost savings.
Why this is correct
Reserved instances are available for vCore.
- ✓
vCore provides more predictable performance for consistent workloads.
Why this is correct
vCore has dedicated resources.
- ✗
Only DTU supports elastic pools.
Why it's wrong here
Both support elastic pools.
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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