Troubleshooting Interview Questions — All Categories
141 questions across 32 categories
Real production incidents, spanning Kubernetes, AWS, Docker, Terraform, CI/CD, networking, and databases — diagnosing a specific symptom back to its actual cause, not textbook definitions.
How would you detect, from CloudWatch metrics alone, whether a Lambda function's tail latency problem is cold-start-driven versus something else?
IntermediateAWSLambdaCloudwatch7 min
A Lambda function times out for about 2% of invocations, seemingly at random, but works fine when you test it manually. How would you track down the cause?
IntermediateAWSLambda10 min
How would you determine, after an S3 public-write exposure, exactly which objects were added, modified, or deleted if versioning wasn't enabled?
AdvancedAWSS37 min
A security scanner just flagged one of your production S3 buckets as publicly readable. Walk through how you'd respond in the first hour and prevent a repeat.
AdvancedAWSS3Security10 min