Microsoft Certified: Azure Developer Associate Azure Cosmos DB Development 2

Question 1

Which method in the Azure Cosmos DB .NET SDK v3 is used to create or replace an item if it already exists?

Accepted Answer

UpsertItemAsync

Answer

UpsertItemAsync creates the item if it does not exist or replaces it if it does, making it idempotent for create-or-update scenarios.

Question 2

In Azure Cosmos DB SQL API queries, which clause is required when querying across all partitions?

Accepted Answer

ENABLE CROSS PARTITION QUERY

Answer

When executing a cross-partition query via the SDK, you must set EnableCrossPartitionQuery = true in QueryRequestOptions; without a partition key filter, queries fan out to all partitions.

Question 3

What is the Azure Cosmos DB change feed?

Accepted Answer

A sorted list of changes to items in a container that can be read by consumers

Answer

The change feed is a persistent log of changes (inserts and updates) to items in a Cosmos DB container, readable in order by partition key within each partition.

Question 4

Which of the following is a correct way to read a single item by its ID in Azure Cosmos DB .NET SDK v3?

Accepted Answer

container.ReadItemAsync<T>(id, new PartitionKey(pk))

Answer

ReadItemAsync requires both the item ID and partition key value and is the most efficient single-item read (a point read costing 1 RU).

Question 5

Which indexing policy mode in Azure Cosmos DB indexes all paths by default?

Accepted Answer

Consistent

Answer

Consistent indexing (the default) synchronously indexes all item paths on every write, enabling immediate query consistency.

Microsoft Certified: Azure Developer Associate Practice Test

Microsoft Certified: Azure Developer Associate Practice Test

Microsoft Certified: Azure Developer Associate Azure Cosmos DB Development 2