Microsoft Certified: Azure Developer Associate Azure Cosmos DB Development

Question 1

Which consistency level in Azure Cosmos DB provides the strongest consistency guarantee?

Accepted Answer

Strong

Answer

Strong consistency ensures linearizability, meaning reads always return the most recent committed version of an item.

Question 2

What is the unit used to measure provisioned throughput in Azure Cosmos DB?

Accepted Answer

RU/s (Request Units per second)

Answer

Azure Cosmos DB uses Request Units per second (RU/s) as the abstracted currency for CPU, IOPS, and memory consumed by operations.

Question 3

Which Azure Cosmos DB API is designed for working with graph data and relationships?

Accepted Answer

Gremlin API

Answer

The Gremlin API (Graph API) supports the Apache TinkerPop Gremlin graph traversal language for modeling and querying graph data.

Question 4

What is the maximum size of a single document (item) in Azure Cosmos DB?

Accepted Answer

4 MB

Answer

Azure Cosmos DB supports individual item (document) sizes up to 2 MB.

Question 5

Which partition key choice would result in the BEST throughput distribution in a Cosmos DB container storing IoT sensor readings?

Accepted Answer

deviceId

Answer

Using deviceId distributes data evenly across logical partitions since each device generates a unique stream of readings, avoiding hot partitions.

Microsoft Certified: Azure Developer Associate Practice Test