Exam AI-100 topic 1 question 17 discussion

More than one answer choice may achieve the goal. A. Change the request units. Request unit is a performance currency abstracting the system resources such as CPU, IOPS, and memory that are required to perform the database operations supported by Azure Cosmos DB. https://docs.microsoft.com/en-us/azure/cosmos-db/request-units B. Change the partitioning strategy. Improve performance. Data access operations on each partition take place over a smaller volume of data. Correctly done, partitioning can make your system more efficient. Operations that affect more than one partition can run in parallel. https://docs.microsoft.com/en-us/azure/architecture/best-practices/data-partitioning

Seems to be correct

To reduce the amount of time it takes for queries to complete on the Contoso data in Azure Cosmos DB, while minimizing costs, the BEST way to achieve the goal is B. Change the partitioning strategy.

Question Say More than one answer choice may achieve the goal but Choose the Best Answer, it would be B and if it says to choose two then we can go with A & B.

This is about provisioning throughput in Azure Cosmos DB. https://docs.microsoft.com/en-us/azure/cosmos-db/set-throughput Both A and B serve the purpose. RU's impact the cost directly, so it makes Partitioning Strategy (B) a lower cost option. Since the question asks for more than one answer, both A and B are correct... if this is a multichoice question.

A and B both work but as you want to minimize cost, B becomes the better choice.