Question 537 of 982

Identify considerations for relational data on Azure →mediumMultiple ChoiceObjective-mapped

DP-900 Practice Question: Identify considerations for relational data on Azure

This DP-900 practice question tests your understanding of identify considerations for relational data on azure. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.

A SaaS provider hosts databases for hundreds of clients, each with light and sporadic usage. They notice that using separate single databases with provisioned DTUs is cost-inefficient. They need to consolidate the databases while optimizing cost and ensuring that a busy client does not monopolize resources. Which Azure SQL Database option should they use?

Question 1mediummultiple choice

Full question →

A
Single database with provisioned DTU
Why wrong: Using separate single databases each with their own provisioned DTU would be more expensive and does not provide resource sharing, leading to over-provisioning for idle databases.
B
Elastic pool
Elastic pools consolidate multiple databases into a shared resource pool. They are designed for SaaS applications with many databases having low average usage and unpredictable spikes, providing cost savings and performance isolation.
C
Managed Instance
Why wrong: Managed Instance is designed for lift-and-shift scenarios with full SQL Server instance-level compatibility and is not optimized for sharing resources among many small databases.
D
SQL Server on Azure VM
Why wrong: Running SQL Server on Azure VMs gives full control but requires management of the OS and SQL Server, and does not provide the built-in resource pooling and cost optimization of elastic pools.

Full breakdown with real-world context →

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

✓

Elastic pool

An Azure SQL Database elastic pool is designed to optimize cost for multiple databases with light and sporadic usage by sharing a fixed set of resources (eDTUs) across all databases in the pool. This prevents a busy client from monopolizing resources through per-database resource limits (min and max DTU), ensuring performance isolation while consolidating costs.

Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

✗
Single database with provisioned DTU
Why it's wrong here
Using separate single databases each with their own provisioned DTU would be more expensive and does not provide resource sharing, leading to over-provisioning for idle databases.
✓
Elastic pool
Why this is correct
Elastic pools consolidate multiple databases into a shared resource pool. They are designed for SaaS applications with many databases having low average usage and unpredictable spikes, providing cost savings and performance isolation.
Related concept
Read the scenario before looking for a memorised answer.
✗
Managed Instance
Why it's wrong here
Managed Instance is designed for lift-and-shift scenarios with full SQL Server instance-level compatibility and is not optimized for sharing resources among many small databases.
✗
SQL Server on Azure VM
Why it's wrong here
Running SQL Server on Azure VMs gives full control but requires management of the OS and SQL Server, and does not provide the built-in resource pooling and cost optimization of elastic pools.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates often confuse elastic pools with single databases, thinking that provisioned DTUs are always cheaper for sporadic workloads, but they miss that elastic pools share resources across databases to eliminate over-provisioning waste.

Trap categories for this question

Scenario analysis trap
Managed Instance is designed for lift-and-shift scenarios with full SQL Server instance-level compatibility and is not optimized for sharing resources among many small databases.

Detailed technical explanation

How to think about this question

Elastic pools use eDTUs (elastic Database Transaction Units) that are shared among all databases in the pool, with each database having configurable min and max eDTU limits to prevent resource monopolization. Under the hood, the pool's total eDTU count is allocated to a single SQL Server instance, and the Azure resource governor enforces per-database caps, allowing idle databases to yield resources to busier ones. In a real-world scenario, a pool of 100 databases each using 1 DTU on average but peaking at 10 DTUs can be served by a 100 eDTU pool, saving up to 90% cost compared to 100 single databases.

KKey Concepts to Remember

Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.

TExam Day Tips

Watch for words such as best, first, most likely and least administrative effort.
Review why wrong options are wrong, not only why the correct option is correct.

Key takeaway

Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

Real-world example

How this comes up in practice

A startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.

What to study next

Got this wrong? Here's your next step.

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

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FAQ

Questions learners often ask

What does this DP-900 question test?

Identify considerations for relational data on Azure — This question tests Identify considerations for relational data on Azure — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: Elastic pool — An Azure SQL Database elastic pool is designed to optimize cost for multiple databases with light and sporadic usage by sharing a fixed set of resources (eDTUs) across all databases in the pool. This prevents a busy client from monopolizing resources through per-database resource limits (min and max DTU), ensuring performance isolation while consolidating costs.

What should I do if I get this DP-900 question wrong?

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

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