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Question

A developer configured an Amazon API Gateway proxy integration to work with a Lambda function. However, when the API is being called, the developer receives a 502 Bad Gateway error. He tried invoking the underlying function but it properly returns the result in XML format.What is the likely root cause of this issue?
  • There is an incompatible output returned from a Lambda proxy integration backend.
  • There has been an occasional out-of-order invocation due to heavy loads.
  • The endpoint request timed-out.
  • The API name of the Amazon API Gateway proxy is invalid.
Answer- A


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