A company is building a web application on AWS. When a customer sends a request, the application will generate reports and then make the reports available to the customer within one hour. Reports should be accessible to the customer for 8 hours. Some reports are larger than 1 MB. Each report is unique to the customer. The application should delete all reports that are older than 2 days.
Which solution will meet these requirements with the LEAST operational overhead?

• A.Generate the reports and then store the reports in an Amazon RDS database with a date stamp. Generate an URL that retrieves the reports from the RDS database. Provide the URL to customers through the web application. Schedule an hourly AWS Lambda function to delete database records that have expired date stamps.
• B.Generate the reports and then store the reports in an Amazon S3 bucket that uses server-side encryption. Attach the reports to an Amazon Simple Notification Service (Amazon SNS) message. Subscribe the customer to email notifications from Amazon SNS.
• C.Generate the reports and then store the reports as Amazon DynamoDB items that have a specified TTL. Generate a URL that retrieves the reports from DynamoDB. Provide the URL to customers through the web application.
• D.Generate the reports and then store the reports in an Amazon S3 bucket that uses server-side encryption. Generate a presigned URL that contains an expiration date Provide the URL to customers through the web application. Add S3 Lifecycle configuration rules to the S3 bucket to delete old reports.

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An online sales company is developing a serverless application that runs on AWS. The application uses an AWS Lambda function that calculates order success rates and stores the data in an Amazon DynamoDB table.
A developer wants an efficient way to invoke the Lambda function every 15 minutes.
Which solution will meet this requirement with the LEAST development effort?

• A.Create an Amazon EventBridge rule that has a rate expression that will run the rule every 15 minutes.
  Add the Lambda function as the target of the EventBridge rule.
• B.Create an AWS Systems Manager document that has a script that will invoke the Lambda function on Amazon EC2. Use a Systems Manager Run Command task to run the shell script every 15 minutes.
• C.Create an AWS Step Functions state machine. Configure the state machine to invoke the Lambda function execution role at a specified interval by using a Wait state. Set the interval to 15 minutes.
• D.Provision a small Amazon EC2 instance. Set up a cron job that invokes the Lambda function every 15 minutes.

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A developer is creating an AWS CloudFormation template to deploy Amazon EC2 instances across multiple AWS accounts. The developer must choose the EC2 instances from a list of approved instance types.
How can the developer incorporate the list of approved instance types in the CloudFormation template?

• A.In the CloudFormation template, create a separate parameter for each EC2 instance type in the list.
• B.In the CloudFormation template, create a parameter with the list of EC2 instance types as AllowedValues.
• C.In the Resources section of the CloudFormation template, create resources for each EC2 instance type in the list.
• D.Create a separate CloudFormation template for each EC2 instance type in the list.

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A developer maintains an Amazon API Gateway REST API. Customers use the API through a frontend UI and Amazon Cognito authentication.
The developer has a new version of the API that contains new endpoints and backward-incompatible interface changes. The developer needs to provide beta access to other developers on the team without affecting customers.
Which solution will meet these requirements with the LEAST operational overhead?

• A.Define a development stage on the API Gateway API. Instruct the other developers to point the endpoints to the development stage.
• B.Define a new API Gateway API that points to the new API application code. Instruct the other developers to point the endpoints to the new API.
• C.Implement a query parameter in the API application code that determines which code version to call.
• D.Specify new API Gateway endpoints for the API endpoints that the developer wants to add.

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A developer needs to migrate an online retail application to AWS to handle an anticipated increase in traffic.
The application currently runs on two servers: one server for the web application and another server for the database. The web server renders webpages and manages session state in memory. The database server hosts a MySQL database that contains order details. When traffic to the application is heavy, the memory usage for the web server approaches 100% and the application slows down considerably.
The developer has found that most of the memory increase and performance decrease is related to the load of managing additional user sessions. For the web server migration, the developer will use Amazon EC2 instances with an Auto Scaling group behind an Application Load Balancer.
Which additional set of changes should the developer make to the application to improve the application's performance?

• A.Use an EC2 instance to host the MySQL database. Store the session data and the application data in the MySQL database.
• B.Use Amazon ElastiCache for Memcached to store and manage the session data. Use an Amazon RDS for MySQL DB instance to store the application data.
• C.Use Amazon ElastiCache for Memcached to store and manage the session data and the application data.
• D.Use the EC2 instance store to manage the session data. Use an Amazon RDS for MySQL DB instance to store the application data.

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