An application uses a DynamoDB database for storing user data. The application starts receiving 400 error codes. What is the possible cause of the issue?

Answer options:

A.Internal server processing error.
B.Service is currently unavailable.
C.Provisioned throughput limit has been exceeded.
D.The HTTP version used in the request is not supported by the server.

Answer: C
Option A is incorrect because an internal server processing error results in a 500 error code.
Option B is incorrect because if a service were unavailable, a 500 error code would be received.
Option C is CORRECT because exceeding provisioned throughput limit returns a 400 error code.
Option D is incorrect because an unsupported HTTP version would return a 500 error code.
Reference:
https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Programming.Errors.html