A Company Has a Legacy Application That Was Migrated to a Fleet

question 361

Multiple Choice

A company has a legacy application that was migrated to a fleet of Amazon EC2 instances. The application stores data in a MySQL database that is currently installed on a single EC2 instance. The company has decided to migrate the database from the EC2 instance to MySQL on Amazon RDS. What should the Developer do to update the application to support data storage in Amazon RDS?

• A) Update the database connection parameters in the application to point to the new RDS instance.
• B) Add a script to the EC2 instance that implements an AWS SDK for requesting database credentials.
• C) Create a new EC2 instance with an IAM role that allows access to the new RDS database.
• D) Create an AWS Lambda function that will route traffic from the EC2 instance to the RDS database.

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Definitions:

Margin Of Safety

The difference between actual or projected sales and the break-even point, indicating the amount of sales that can decline before a business incurs a loss.

Fixed Costs

Fixed costs are business expenses that remain constant regardless of the level of production or sales activity, such as rent and salaries.

Absorption Costing

A financial accounting technique that integrates all costs incurred from manufacturing, including direct materials, direct labor, along with both fixed and variable overhead costs, into the total cost of a product.

Direct Materials

Raw materials that can be directly linked to the production of finished goods in manufacturing.