You have a requirement to migrate your knowledge base (KB) to a different region. You plan to create a new knowledge base from an existing knowledge base using a migration method while maintaining the same knowledge base id. To achieve this objective, you export the knowledge base in the existing region, create a new knowledge base in the new Azure region and import the knowledge base by using the exported file. 
Review the REST API statements that you would use for exporting and importing KB. (Select one option) 
 

Answer options:

A.Export KB: PUT {Endpoint}/qnamaker/v4.0/knowledgebases/{kbId}
Import KB: GET {Endpoint}/qnamaker/v4.0/knowledgebases/{kbId}/{environment}/qna
B.Export KB: GET {Endpoint}/qnamaker/v4.0/knowledgebases/{kbId}/{environment}/qna
Import KB: POST {Endpoint}/qnamaker/v4.0/knowledgebases/create
C.Export KB: POST {Endpoint}/qnamaker/v4.0/knowledgebases/create
Import KB: GET {Endpoint}/qnamaker/v4.0/knowledgebases/{kbId}/{environment}/qna
D.Export KB: GET {Endpoint}/qnamaker/v4.0/knowledgebases/{kbId}/{environment}/qna
Import KB: PUT {Endpoint}/qnamaker/v4.0/knowledgebases/{kbId}

Correct Answer: D
Option A is incorrect because GET is used to download the KB, and PUT is used for importing the Knowledge Base.
Option B is incorrect because the import KB command used here is meant to create a new KB. It does not maintain the same KB id and hence does not meet the requirement.
Option B is incorrect because GET is used for downloading the KB, and PUT is used during the import process.
Option D is correct because the GET command here is used for exporting a KB, and the PUT command meets our requirement of importing the KB while maintaining the KB id.
Reference:
To learn more about creating a knowledge base from an existing knowledge base, use the link given below: 

https://docs.microsoft.com/en-us/azure/cognitive-services/qnamaker/tutorials/migrate-knowledge-base?tabs=v1