How can the developer troubleshoot the failure?

A developer is testing an application that invokes an AWS Lambda function asynchronously. During the testing phase, the Lambda function fails to process after two retries.

How can the developer troubleshoot the failure?
A . Configure AWS CloudTrail logging to investigate the invocation failures
B . Configure Dead Letter Queues by sending events to Amazon SQS for investigation
C . Configure Amazon Simple Workflow Service to process any direct unprocessed events
D . Configure AWS Config to process any direct unprocessed events

View Answer

Answer: B

Explanation:

Reference: https://www.concurrencylabs.com/blog/how-to-operate-aws-lambda/