AWS Certified Developer Associate Practice Test 4

Correct answer - "X-Ray sampling": X-Ray SDK applies a sampling algorithm to determine which requests get traced however because our application is failing to send data to X-Ray it does not help in determining the cause of failure.

Incorrect:

"EC2 X-Ray Daemon" - The daemon logs could help with figuring out the problem.

"EC2 Instance Role" - Eliminates API permission issues (in case the role doesn't have IAM permissions to write data to the X-Ray serivce)

"CloudTrail" - We could check CloudTrail to see if any API call is being denied on X-Ray

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