A Solutions Architect is designing a web application for document sharing. The users will upload
documents that are then made available to other users. There will be tens of thousands of these
documents.
What is the MOST cost-effective storage solution?

• A.Amazon EFS
• B.Amazon S3
• C.Amazon Glacier
• D.Amazon EBS

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A company wants to deploy an AWS WAF solution to manage AWS WAF rules across multiple AWS accounts. The accounts are managed under different OUs in AWS Organizations.
Administrators must be able to add or remove accounts or OUs from managed AWS WAF rule sets as needed.
Administrators also must have the ability to automatically update and remediate noncompliant AWS WAF rules in all accounts Which solution meets these requirements with the LEAST amount of operational overhead?

• A.Deploy an organization-wide AWS Conng rule that requires all resources in the selected OUs to associate the AWS WAF rules. Deploy automated remediation actions by using AWS Lambda to fix noncompliant resources. Deploy AWS WAF rules by using an AWS CloudFormation stack set to target the same OUs where the AWS Config rule is applied.
• B.Use AWS Control Tower to manage AWS WAF rules across accounts in the organization. Use AWS Key Management Service (AWS KMS) to store account numbers and OUs to manage Update AWS KMS as needed to add or remove accounts or OUs. Create IAM users in member accounts Allow AWS Control Tower in the management account to use the access key and secret access key to create and update AWS WAF rules in the member accounts
• C.Use AWS Firewall Manager to manage AWS WAF rules across accounts in the organization. Use an AWS Systems Manager Parameter Store parameter to store account numbers and OUs to manage Update the parameter as needed to add or remove accounts or OUs Use an Amazon EventBridge (Amazon CloudWatch Events) rule to identify any changes to the parameter and to invoke an AWS Lambda function to update the security policy in the Firewall Manager administrative account
• D.Create AWS WAF rules in the management account of the organization. Use AWS Lambda environment variables to store account numbers and OUs to manage Update environment variables as needed to add or remove accounts or OUs Create cross-account IAM roles in member accounts. Assume the roles by using AWS Security Token Service (AWS STS) in the Lambda function to create and update AWS WAF rules in the member accounts

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For AWS CloudFormation, which stack state refuses UpdateStack calls?

• A.UPDATE_ROLLBACK_FAILED
• B.UPDATE_ROLLBACK_COMPLETE
• C.UPDATE_COMPLETE
• D.CREATE_COMPLETE

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A user has created a VPC with a public subnet. The user has terminated all the instances which are part of the subnet. Which of the below mentioned statements is true with respect to this scenario?

• A.The subnet to which the instances were launched with will be deleted
• B.When the user launches a new instance it cannot use the same subnet
• C.The user cannot delete the VPC since the subnet is not deleted
• D.Secondary network interfaces attached to the terminated instances may persist.

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A company is running a large application on-premises. Its technology stack consists of Microsoft .NET for the web server platform and Apache Cassandra for the database. The company wants to migrate the application to AWS to improve service reliability. The IT team also wants to reduce the time it spends on capacity management and maintenance of this infrastructure. The Development team is willing and available to make code changes to support the migration.
Which design is the LEAST complex to manage after the migration?

• A.Migrate the web servers to Amazon EC2 instances in an Auto Scaling group that is running .NET.
  Migrate the existing Cassandra database to Amazon Aurora with multiple read replicas, and run both in a Multi-AZ mode.
• B.Migrate the web servers to an AWS Elastic Beanstalk environment that is running the .NET platform in a Multi-AZ Auto Scaling configuration. Migrate the Cassandra database to Amazon EC2 instances that are running in a Multi-AZ configuration.
• C.Migrate the web servers to an AWS Elastic Beanstalk environment that is running the .NET platform in a Multi-AZ Auto Scaling configuration. Migrate the existing Cassandra database to Amazon DynamoDB.
• D.Migrate the web servers to Amazon EC2 instances in an Auto Scaling group that is running .NET.
  Migrate the existing Cassandra database to Amazon DynamoDB.

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