Development with AWS services
Practise only this domain. 64 questions with explanations, 20 at a time.
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- A Node.js function runs on AWS Lambda and must query a PostgreSQL database that sits in private subnets with no public IP address. The function is currently deployed with default networking. What should the team change?Medium
- A REST API forwards requests to a Lambda function that raises errors whose text contains NotFound or Conflict. Clients should receive 404 or 409 respectively. The Lambda code must stay unchanged. Which configuration achieves this?Hard
- A team must rename fields, reshape the JSON body, and map a backend's HTTP status codes to API responses before the client sees them. Which API Gateway integration offers that control?Medium
- A retail company wants one published event to reach three independent processing queues, each with its own consumers and retry behavior. Which SNS subscription endpoint should be used to fan out to the queues?Easy
- A DynamoDB query response includes a LastEvaluatedKey value. What should the client do?Medium
- A standard SQS queue feeds a reconciliation worker. Each job must stay hidden for four minutes after it is enqueued, before any consumer can receive it. Which setting achieves this without a scheduler?Medium