A Company Maintains an Application Responsible for Processing Several Thousand

question 163

Multiple Choice

A company maintains an application responsible for processing several thousand external callbacks each day. The company's System administrators want to know how many callbacks are being received on a rolling basis, and they want this data available for 10 days. The company also wants the ability to issue automated alerts if the number of callbacks exceeds the defined thresholds. What is the MOST cost-effective way to address the need to track and alert on these statistics?

• A) Push callback data to an Amazon RDS database that can be queried to show historical data and to alert on exceeded thresholds.
• B) Push callback data to AWS X-Ray and use AWS Lambda to query, display, and alert on exceeded thresholds.
• C) Push callback data to Amazon Kinesis Data Streams and invoke an AWS Lambda function that stores data in Amazon DynamoDB and sends the required alerts.
• D) Push callback data to Amazon CloudWatch as a custom metric and use the CloudWatch alerting mechanisms to alert System Administrators.

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Definitions:

Cytotoxic T cells

A type of immune cell capable of killing cancer cells, infected cells, and other cells that are deemed a threat to the organism.

Antibodies

Proteins produced by the immune system that recognize and bind to specific antigens to help protect the body from infection.

Antibody Blood Levels

The concentration of antibodies in the bloodstream, indicative of the body's immune response either to infections or to vaccines.

Antigen

A substance that when introduced into the body stimulates the production of an antibody, can be toxins, bacteria, foreign blood cells, and the cells of transplanted organs.