Microsoft Certified:Azure Cosmos DB Developer Specialty
Domain 1Objective 3
Plan and Implement Sizing and Scaling for a Database Created with Azure Cosmos DB DP-420 Practice Questions (Page 5)
Part of the Design and implement data models domain, which makes up ~45% of our current practice bank. Microsoft does not publish an official question count, but from its 100-minute exam (~40–65 total, ~18–29 in this domain), expect 3–4 from this objective — we provide 26 practice questions to prepare you well beyond it. (estimate)
26questions here
6free pages
9concepts
Questions 21–25
- 21
A team is designing an Azure Cosmos DB solution for a real-time analytics platform. The workload consists of high-volume writes (10,000 writes/sec) and low-volume reads (100 reads/sec). Each write costs 5 RU/s and each read costs 2 RU/s. The team wants to minimize cost while ensuring the write workload is not throttled. They are considering using a single container with provisioned throughput. What is the minimum RU/s they should provision?
Select an answer first - 22
A developer is choosing between serverless and provisioned throughput modes for a new Azure Cosmos DB container. The workload is expected to be highly intermittent, with long periods of no traffic and occasional short bursts. Which throughput mode is most appropriate for this workload?
Select an answer first - 23
A company is planning to deploy an Azure Cosmos DB account with two regions: East US and West Europe. The application will have a write-heavy workload in both regions, and the team wants to minimize latency for writes in both regions. They are evaluating the cost implications of multi-region writes. Which statement is true regarding the cost of multi-region writes?
Select an answer first - 24
A developer is estimating the storage requirements for an Azure Cosmos DB container that will store user profile documents. Each document is approximately 2 KB, and the application will store 1 million user profiles. What is the minimum storage capacity (in GB) that should be planned for the data alone, ignoring indexes and overhead?
Select an answer first - 25
A developer is monitoring an Azure Cosmos DB container that is experiencing throttling (HTTP 429) during peak hours. The container currently has 400 RU/s provisioned. The developer wants to increase throughput to 800 RU/s using the Azure portal, but only during peak hours, and then reduce it back to 400 RU/s afterward. What should the developer do?
Select an answer first
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