A Developer Has Written an AWS Lambda Function Using Java

question 460

Multiple Choice

A developer has written an AWS Lambda function using Java as the runtime environment. The developer wants to isolate a performance bottleneck in the code. Which steps should be taken to reveal the bottleneck?

• A) Use the Amazon CloudWatch API to write timestamps to a custom CloudWatch metric. Use the CloudWatch console to analyze the resulting data.
• B) Use the AWS X-Ray API to write trace data into X-Ray from strategic places within the code. Use the Amazon CloudWatch console to analyze the resulting data.
• C) Use the AWS X-Ray API to write trace data into X-Ray from strategic places within the code. Use the X-Ray console to analyze the resulting data.
• D) Use the Amazon CloudWatch API to write timestamps to a custom CloudWatch metric. Use the AWS X-Ray console to analyze the resulting data.

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Definitions:

Sequencing

The process of arranging objects, actions, or information in a specific order, often for clarity, effectiveness, or logical progression.

Low-Cost

Describing products, services, or strategies that require minimal financial outlay.

High-Risk

Situations or decisions characterized by a high possibility of loss, failure, or negative outcomes, requiring careful assessment and management.

Influence Tactics

Strategies or actions used by individuals or groups to persuade or direct the behavior or decision-making of others towards a desired outcome.