A solutions architect is designing the data storage and retrieval architecture for a new application that a company will be launching soon. The application is designed to ingest millions of small records per minute from devices all around the world. Each record is less than 4 KB in size and needs to be stored in a durable location where it can be retrieved with low latency. The data is ephemeral and the company is required to store the data for 120 days only, after which the data can be deleted.
The solutions architect calculates that, during the course of a year, the storage requirements would be about 10-15 TB.
Which storage strategy is the MOST cost-effective and meets the design requirements?

• A.Design the application to store each incoming record as a single .csv file in an Amazon S3 bucket to allow for indexed retrieval. Configure a lifecycle policy to delete data older than 120 days.
• B.Design the application to store each incoming record in an Amazon DynamoDB table properly configured for the scale. Configure the DynamoOB Time to Live (TTL) feature to delete records older than 120 days.
• C.Design the application to store each incoming record in a single table in an Amazon RDS MySQL database. Run a nightly cron job that executes a query to delete any records older than 120 days.
• D.Design the application to batch incoming records before writing them to an Amazon S3 bucket. Update the metadata for the object to contain the list of records in the batch and use the Amazon S3 metadata search feature to retrieve the data. Configure a lifecycle policy to delete the data after 120 days.

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A company has a new security policy. The policy requires the company to log any event that retrieves data from Amazon S3 buckets. The company must save these audit logs in a dedicated S3 bucket. The company created the audit logs S3 bucket in an AWS account that is designated for centralized logging. The S3 bucket has a bucket policy that allows write-only cross-account access A solutions architect must ensure that all S3 object-level access is being logged for current S3 buckets and future S3 buckets. Which solution will meet these requirements?

• A.Enable server access logging for all current S3 buckets. Use the audit logs S3 bucket as a destination for audit logs
• B.Enable replication between all current S3 buckets and the audit logs S3 bucket Enable S3 Versioning in the audit logs S3 bucket
• C.Configure S3 Event Notifications for all current S3 buckets to invoke an AWS Lambda function every time objects are accessed . Store Lambda logs in the audit logs S3 bucket.
• D.Enable AWS CloudTrail. and use the audit logs S3 bucket to store logs Enable data event logging for S3 event sources, current S3 buckets, and future S3 buckets.

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A live-events company is designing a scaling solution for its ticket application on AWS. The application has high peaks of utilization during sale events. Each sale event is a one-time event that is scheduled.
The application runs on Amazon EC2 instances that are in an Auto Scaling group. The application uses PostgreSOL for the database layer.
The company needs a scaling solution to maximize availability during the sale events.
Which solution will meet these requirements?

• A.Use a predictive scaling policy for the EC2 instances. Host the database on an Amazon Aurora PostgreSOL Serverless v2 Multi-AZ DB instance with automatically scaling read replicas. Create an AWS Step Functions state machine to run parallel AWS Lambda functions to pre-warm the database before a sale event. Create an Amazon EventBridge rule to invoke the state machine.
• B.Use a scheduled scaling policy for the EC2 instances. Host the database on an Amazcyl ROS for PostgreSQL Multi-AZ DB instance with automatically scaling read replicas. Create an Amazon EventBridge rule that invokes an AWS Lambda function to create a larger read replica before a sale event. Fail over to the larger read replica. Create another EventBridge rule that invokes another Lambda function to scale down the read replica after the sale event.
• C.Use a predictive scaling policy for the EC2 instances. Host the database on an Amazon RDS for PostgreSOL Multi-AZ DB instance with automatically scaling read replica. Create an AWS Step Functions state machine to run parallel AWS Lambda functions to pre-warm the database before a sale event. Create an Amazon EventBridge rule to invoke the state machine.
• D.Use a scheduled scaling policy for the EC2 instances. Host the database on an Amazon Aurora PostgreSQL Multi-AZ DB duster. Create an Amazon EventBridge rule that invokes an AWS Lambda function to create a larger Aurora Replica before a sale event. Fail over to the larger Aurora Replica.
  Create another EventBridge rule that invokes another Lambda function to scale down the Aurora Replica after the sale event.

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A company that uses AWS Organizations is creating several new AWS accounts. The company is setting up controls to properly allocate AWS costs to business units. The company must Implement a solution to ensure that all resources include a tag that has a key of costcenter and a value from a predefined list of business units.
The solution must send a notification each time a resource tag does not meet these criteria. The solution must not prevent the creation of resources.
Which solution will meet these requirements with the LEAST operational overhead?

• A.Create an IAM policy for all actions that create AWS resources. Add a condition to the policy that aws:RequestTag/costcenter must exist and must contain a valid business unit value. Create an Amazon EventBridge (Amazon CloudWatch Events) rule that monitors IAM service events and Amazon EC2 service events for noncompliant tag policies. Configure the rule to send notifications through Amazon Simple Notification Service (Amazon SNS).
• B.Create an organization tag policy that ensures that all resources have the costcenter tag with a valid business unit value. Select the option to prevent operations when tags are noncompliant Create an Amazon EventBridge (Amazon CloudWatch Events) rule that monitors all events for noncompliant tag policies. Configure the rule to send notifications through Amazon Simple Notification Service (Amazon SNS).
• C.Create an IAM policy for all actions that create AWS resources. Add a condition to the policy that awsResourceTag/costcenter must exist and must contain a valid business unit value Create an Amazon EventBridge (Amazon CloudWatch Events) rule that monitors IAM service events and Amazon EC2 service events for noncompliant tag policies. Configure the rule to send notifications through Amazon Simple Notification Service (Amazon SNS).
• D.Create an organization tag policy that ensures that all resources have the costcenter tag with a valid business unit value. Do not select the option to prevent operations when tags are noncompliant. Create an Amazon Event8ridge (Amazon CloudWatch Events) rule that monitors all events for noncompliant tag policies. Configure the rule to send notifications through Amazon Simple Notification Service (Amazon SNS).

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A company is planning to migrate its business-critical applications from an on-premises data center to AWS.
The company has an on-premises installation of a Microsoft SQL Server Always On cluster. The company wants to migrate to an AWS managed database service. A solutions architect must design a heterogeneous database migration on AWS.
Which solution will meet these requirements?

• A.Migrate the SQL Server databases to Amazon RDS for MySQL by using backup and restore utilities.
• B.Use an AWS Snowball Edge Storage Optimized device to transfer data to Amazon S3. Set up Amazon RDS for MySQL. Use S3 integration with SQL Server features, such as BULK INSERT.
• C.Use the AWS Schema Conversion Tool to translate the database schema to Amazon RDS for MeSQL.
  Then use AWS Database Migration Service (AWS DMS) to migrate the data from on-premises databases to Amazon RDS.
• D.Use AWS DataSync to migrate data over the network between on-premises storage and Amazon S3. Set up Amazon RDS for MySQL. Use S3 integration with SQL Server features, such as BULK INSERT.

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