Cost-Optimized Architecture I

Question 36

An AI start-up offering software as a service (SaaS) platforms has hired a solutions architect to create a disaster recovery (DR) plan for their high-volume SaaS platform. The start-up is using Amazon Aurora MySQL DB cluster for data storage. The start-up wants to design a disaster recovery plan to replicate data to a secondary AWS Region.

Which solution will meet the requirements in the most cost-efficient manner?

A. Create an Aurora Global database for the DB cluster. Specify a DB instance in the secondary Region.

B. Create an Amazon RDS and configure a multi-region deployment in the secondary Region.

C. Use AWS Data Migration Service (DMS) to continuously migrate data from one cluster to another in the secondary Region.

D. Create an Aurora Global database for the DB cluster. Once the setup is complete, remove the DB instance from the secondary Region.

Question 37

A telephone company stores call transcript files monthly. The transcript files are accessed randomly within a year. After a year, the files are accessed infrequently. The company plans to optimize the solution by allowing users to query and retrieve less than 1-year-old files. A delay in older files is acceptable.

As a solutions architect, provide a solution that would meet these requirements cost-efficiently.

A. Store individual files with tags in S3 Intelligent-Tiering. Use tags for querying and retrieving the files.

B. Store individual files with tags in S3 Standard. Use S3 lifecycle policies to move the objects to S3 Glacier after 1 year. Use tags for querying and retrieving the files.

C. Store individual files in S3 Intelligent-Tiering. Use S3 lifecycle policies to move the objects to S3 Glacier Flexible retrieval after 1 year. Use Amazon Athena to query and retrieve files from S3 Intelligent-Tiering and S3 Glacier Flexible retrieval.

D. Store individual files with tags in S3 Intelligent-Tiering. Use S3 lifecycle policies to move the objects to S3 Glacier Flexible retrieval after 1 year. Move files and tags to RDS to query and retrieve files.

Question 38

A startup is migrating its on-premises workload to AWS Cloud. The startup has been using some EC2 instances and Amazon RDS instances. The startup wants to reduce the overall cost of the infrastructure in RDS.

A solutions architect has suggested starting/stopping EC2 and RDS instances outside of working hours.

Which of the solutions will meet these requirements?

A. Configure an Auto Scaling group to reduce the EC2 instances and start/stop the RDS instance.

B. Configure a Lambda function to start/stop the EC2 and RDS instances. Use the Amazon EventBridge to trigger the Lambda function on a schedule.

C. Utilize AWS Systems Manager (SSM) with CloudWatch Events to schedule the start and stop times for EC2 and RDS instances.

D. Explore the AWS Marketplace for different partner solutions to start/stop the EC2 and RDS instances.

Question 39

A company is using AWS Organizations to manage different AWS accounts. The company wants to obtain department-wise expenditure reports. The company also wants a report of AWS billed items listed by users. The data will be used to consolidate department expenditure reports and budgets.

A solutions architect must determine the way to obtain these reports in a cost-efficient manner.

A. Use AWS Cost Explorer to generate department-wise expenditure reports and use Cost Explorer’s filtering and grouping to list billed items by users.

B. Use AWS Cost Explorer to generate department-wise expenditure reports and run a query with Amazon Athena to list billed items by users.

C. Access the billing details from the Billing dashboard and filter listed billed items by users.

D. Use the AWS Cost and Usage report to provide comprehensive data about the AWS costs and usage. Use AWS Athena to run a query to list billed items by users.