A Company's Data Processing Workflow Uses AWS Lambda to Interact

question 267

Multiple Choice

A company's data processing workflow uses AWS Lambda to interact with other AWS services, including AWS Step Functions, Amazon DynamoDB, and Amazon S3. The Lambda functions make several API calls to these services as a part of the workflow. AWS CloudTrail has been enabled in the AWS Region and is logging to Amazon CloudWatch Logs. The Lambda functions are also logging to CloudWatch Logs. A SysOps administrator notices that a specific Lambda function in the workflow is taking longer to run than it did last month. The SysOps administrator needs to determine the parts of the Lambda function that are experiencing higher-than-normal response times. What solution will accomplish this?

• A) Analyze logs in CloudWatch Logs for the timestamps at which the API calls are made while the Lambda function is running. Compare with the logs from the previous month.
• B) Enable AWS X-Ray for the function. Analyze the service map and traces to help identify the API calls with anomalous response times.
• C) Search CloudTrail logs for the calls from the Lambda function. Compare the observed and expected times of API calls relative to the time when the function starts.
• D) Use CloudWatch to monitor the Duration metric of function invocations for the Lambda function. Compare with the measurements from the previous month.

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Definitions:

Discount Rate

During discounted cash flow analysis, this is the rate employed to determine the present value of anticipated future cash flows.

Cash Flows

The total amount of money being transferred into and out of a business, often used as an indicator of a company's financial strength.

Discount Rate

The discount rate employed in discounted cash flow analysis to ascertain the present worth of future cash flows.

Annual Salary

The total amount of money that an employee earns in a year from their employer for their services.