1. A company's web application is using multiple Linux Amazon EC2 instances and storing data on Amazon EBS volumes. The company is looking for a solution to increase the resiliency of the application in case of a failure and to provide storage that complies with atomicity, consistency, isolation, and durability (ACID).What should a solutions architect do to meet these requirements?

A) Create an Application Load Balancer with Auto Scaling groups across multiple Availability Zones. Mount an instance store on each EC2 instance.
B) Create an Application Load Balancer with Auto Scaling groups across multiple Availability Zones. Store data using Amazon S3 One Zone-Infrequent Access (S3 One Zone-IA).
C) Create an Application Load Balancer with Auto Scaling groups across multiple Availability Zones. Store data on Amazon EFS and mount a target on each instance.
D) Launch the application on EC2 instances in each Availability Zone. Attach EBS volumes to each EC2 instance.



2. A company's legacy application is currently relying on a single-instance Amazon RDS MySQL database without encryption. Due to new compliance requirements, all existing and new data in this database must be encrypted. How should this be accomplished?

A) Enable RDS Multi-AZ mode with encryption at rest enabled. Perform a failover to the standby instance to delete the original instance.
B) Take a snapshot of the RDS instance. Create an encrypted copy of the snapshot. Restore the RDS instance from the encrypted snapshot.
C) Create an Amazon S3 bucket with server-side encryption enabled. Move all the data to Amazon S3. Delete the RDS instance.
D) Create an RDS read replica with encryption at rest enabled. Promote the read replica to master and switch the application over to the new master. Delete the old RDS instance.



3. An application runs on Amazon EC2 instances across multiple Availability Zones. The instances run in an Amazon EC2 Auto Scaling group behind an Application Load Balancer. The application performs best when the CPU utilization of the EC2 instances is at or near 40%.What should a solutions architect do to maintain the desired performance across all instances in the group?

A) Use scheduled scaling actions to scale up and scale down the Auto Scaling group
B) Use a target tracking policy to dynamically scale the Auto Scaling group
C) Use a simple scaling policy to dynamically scale the Auto Scaling group
D) Use an AWS Lambda function to update the desired Auto Scaling group capacity



4. A solutions architect is implementing a document review application using an Amazon S3 bucket for storage. The solution must prevent an accidental deletion of the documents and ensure that all versions of the documents are available. Users must be able to download, modify, and upload documents.Which combination of actions should be taken to meet these requirements? (Choose two.)(Select 2answers)

A) Enable a read-only bucket ACL.
B) Enable MFA Delete on the bucket.
C) Attach an IAM policy to the bucket.
D) Encrypt the bucket using AWS KMS.
E) Enable versioning on the bucket.


5. A solutions architect is tasked with transferring 750 TB of data from a network-attached file system located at a branch office to Amazon S3 Glacier. The solution must avoid saturating the branch office's low-bandwidth internet connection.What is the Most cost-effective solution?

A) Create a site-to-site VPN tunnel to an Amazon S3 bucket and transfer the files directly. Create a bucket policy to enforce a VPC endpoint.
B) Order 10 AWS Snowball appliances and select an S3 Glacier vault as the destination. Create a bucket policy to enforce a VPC endpoint.
C) Mount the network-attached file system to Amazon S3 and copy the file directly. Create a lifecycle policy to transition the S3 object to Amazon S3 Glacier.
D) Order 10 AWS Snowball appliances and select an Amazon S3 bucket as the destination. Create a lifecycle policy to transition the S3 objects to Amazon S3 Glacier.