Developing Solutions for Microsoft Azure - Exam Ref AZ-204 Chapter 2 -
D306 Azure Developer Associate |2025-2026 LATEST UPDATED|70 REAL
EXAM AND COMPLETE QUESTIONS AND ANSWERS | 100% RATED
CORRECT | 100% VERFIED | ALREADY GRADED A+
What is Cosmos DB - (answer)It is a premium storage service that Azure provides for a globally
distributed, low latency, highly responsive, and always online Database. Has scalability and
throughput in mind.
What are the 4 ways you can store your data in Cosmos DB? - (answer)Key-Value
Column Family
Documents
Graph Approaches
What are the current APIs that can access CosmosDB? - (answer)SQL, Cassandra, Table,
Gremlin, and MongoDB
What is SQL API? - (answer)It is the core and default API for accessing data in CosmosDB. You
can query JSON objects using SQL syntax, Uses Javascript. This is a Data Structure based on
Documents.
, What is Table API - (answer)It is like the evolution of Azure Table Storage. It has High
Performance, low latency, and highly scalable features. Can migrate from Azure table storage
with no code modifications. You can define your own indexes. This is a data structure based on
Documents.
What is Cassandra API? - (answer)This is a wire protocol Apache Data Base. How this is
implemented means you do not have to worry about operations or performance management
tasks related to managing this DB. Can migrate from a Cassandra DB to this DB merel y by
changing the connection string. Compatible with CQLv4 wire protocol. This is a Column Based
DB that stores info in a Key-Value approach.
What is MongoDB API? - (answer)This is a NoSQL DB with a Document based Structure.
CosmosDB enables a wire protocol to connect but this API must be version 3.2 or higher.
What is Gremlin API? - (answer)Based on Apache TinkerPop Graph transversal language. This
uses a Graph structure. This stores entities but also:
1. Vertices - (entity such as person, device or event)
2. Edges - Relationships between vertices
3. Properties - each of the attributes that are assigned to a vertex or edge.
D306 Azure Developer Associate |2025-2026 LATEST UPDATED|70 REAL
EXAM AND COMPLETE QUESTIONS AND ANSWERS | 100% RATED
CORRECT | 100% VERFIED | ALREADY GRADED A+
What is Cosmos DB - (answer)It is a premium storage service that Azure provides for a globally
distributed, low latency, highly responsive, and always online Database. Has scalability and
throughput in mind.
What are the 4 ways you can store your data in Cosmos DB? - (answer)Key-Value
Column Family
Documents
Graph Approaches
What are the current APIs that can access CosmosDB? - (answer)SQL, Cassandra, Table,
Gremlin, and MongoDB
What is SQL API? - (answer)It is the core and default API for accessing data in CosmosDB. You
can query JSON objects using SQL syntax, Uses Javascript. This is a Data Structure based on
Documents.
, What is Table API - (answer)It is like the evolution of Azure Table Storage. It has High
Performance, low latency, and highly scalable features. Can migrate from Azure table storage
with no code modifications. You can define your own indexes. This is a data structure based on
Documents.
What is Cassandra API? - (answer)This is a wire protocol Apache Data Base. How this is
implemented means you do not have to worry about operations or performance management
tasks related to managing this DB. Can migrate from a Cassandra DB to this DB merel y by
changing the connection string. Compatible with CQLv4 wire protocol. This is a Column Based
DB that stores info in a Key-Value approach.
What is MongoDB API? - (answer)This is a NoSQL DB with a Document based Structure.
CosmosDB enables a wire protocol to connect but this API must be version 3.2 or higher.
What is Gremlin API? - (answer)Based on Apache TinkerPop Graph transversal language. This
uses a Graph structure. This stores entities but also:
1. Vertices - (entity such as person, device or event)
2. Edges - Relationships between vertices
3. Properties - each of the attributes that are assigned to a vertex or edge.
