A Developer Is Building an Application Using an Amazon API

question 95

Multiple Choice

A developer is building an application using an Amazon API Gateway REST API backend by an AWS Lambda function that interacts with an Amazon DynamoDB table. During testing, the developer observes high latency when making requests to the API. How can the developer evaluate the end-to-end latency and identify performance bottlenecks?

• A) Enable AWS CloudTrail logging and use the logs to map each latency and bottleneck.
• B) Enable and configure AWS X-Ray tracing on API Gateway and the Lambda function. Use X-Ray to trace and analyze user requests.
• C) Enable Amazon CloudWatch Logs for the Lambda function. Enable execution logs for API Gateway to view and analyze user request logs.
• D) Enable VPC Flow Logs to capture and analyze network traffic within the VPC.

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Definitions:

Negatively Correlated

A relationship between two variables in which one variable increases as the other decreases.

Diversification Benefits

The advantages gained by investing in a variety of assets to reduce risk in a portfolio.

Correlation

A statistical measure that indicates the extent to which two or more variables fluctuate together.

Minimum-Variance Portfolio

An investment portfolio designed to achieve the lowest possible risk level for its expected rate of return.