The vCore-based purchasing model with reserved capacity is the correct choice because it directly addresses the need to minimize costs while ensuring predictable performance and seasonal scalability. By committing to a one- or three-year term for compute resources, you receive a substantial discount of 40-60% over pay-as-you-go pricing, making it ideal for baseline workloads that require dedicated resources. On the DP-300 exam, this scenario tests your understanding of how reserved capacity optimizes cost for steady-state workloads while still allowing you to scale up vCores or storage during peak seasons—a common trap is confusing this with the DTU model, which lacks reserved capacity discounts and offers less granular scaling. Remember the key distinction: reserved capacity locks in savings for the predictable base load, while pay-as-you-go handles spikes. Memory tip: “Reserve the base, scale the peak.”
DP-300 Plan and implement data platform resources Practice Question
This DP-300 practice question tests your understanding of plan and implement data platform resources. 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.
You are planning to deploy Azure SQL Database for a new application. The application requires a predictable performance with reserved resources and the ability to scale up during peak season. You want to minimize costs. Which purchasing model should you choose?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "minimum / minimize"
Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
vCore-based purchasing model with reserved capacity
The vCore-based purchasing model with reserved capacity is correct because it allows you to reserve compute resources for a one- or three-year term, providing a significant discount (up to 40-60%) compared to pay-as-you-go pricing. This model also supports predictable performance with dedicated resources and the ability to scale up (e.g., increase vCores or storage) during peak seasons, while the reserved capacity commitment minimizes costs for the baseline workload.
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.
✓
vCore-based purchasing model with reserved capacity
Why this is correct
vCore model allows manual scaling and reserved instances reduce costs.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
DTU-based purchasing model
Why it's wrong here
DTU model is less flexible and may not offer reserved capacity.
✗
Hyperscale service tier
Why it's wrong here
Hyperscale is for high storage and read scale-out, not cost optimization for predictable performance.
✗
Serverless compute tier
Why it's wrong here
Serverless is for intermittent workloads, not predictable peak seasons.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse the DTU model as the default cost-saving option, but the vCore model with reserved capacity actually provides deeper discounts for predictable workloads, while the DTU model lacks such reservation flexibility.
Detailed technical explanation
How to think about this question
Under the vCore model, you can choose between provisioned compute (with reserved capacity) and serverless compute, where reserved capacity applies only to provisioned compute. The reserved capacity commitment is applied at the region and service tier level, and you can modify the number of vCores within the same tier during the reservation term, but scaling to a higher tier (e.g., from General Purpose to Business Critical) requires a new reservation. In practice, this model is ideal for applications with steady-state baseline usage that can be predicted over a year or more, allowing you to combine reserved capacity for the base load with on-demand scaling for peak periods.
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this DP-300 question in full detail.
Plan and implement data platform resources — This question tests Plan and implement data platform resources — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: vCore-based purchasing model with reserved capacity — The vCore-based purchasing model with reserved capacity is correct because it allows you to reserve compute resources for a one- or three-year term, providing a significant discount (up to 40-60%) compared to pay-as-you-go pricing. This model also supports predictable performance with dedicated resources and the ability to scale up (e.g., increase vCores or storage) during peak seasons, while the reserved capacity commitment minimizes costs for the baseline workload.
What should I do if I get this DP-300 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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