- (Exam Topic 1)
A company wants to migrate an on-premises data center to AWS. The data canter hosts an SFTP server that stores its data on an NFS-based file system. The server holds 200 GB of data that needs to be transferred. The server must be hosted on an Amazon EC2 instance that uses an Amazon Elastic File System (Amazon EFS) file system
When combination of steps should a solutions architect take to automate this task? (Select TWO )

1. A. Launch the EC2 instance into the same Avalability Zone as the EFS fie system
2. B. install an AWS DataSync agent m the on-premises data center
3. C. Create a secondary Amazon Elastic Block Store (Amazon EBS) volume on the EC2 instance tor the data
4. D. Manually use an operating system copy command to push the data to the EC2 instance
5. E. Use AWS DataSync to create a suitable location configuration for the onprermises SFTP server

Correct Answer: AB

- (Exam Topic 1)
A company has an Amazon S3 bucket that contains critical data. The company must protect the data from accidental deletion.
Which combination of steps should a solutions architect take to meet these requirements? (Choose two.)

1. A. Enable versioning on the S3 bucket.
2. B. Enable MFA Delete on the S3 bucket.
3. C. Create a bucket policy on the S3 bucket.
4. D. Enable default encryption on the S3 bucket.
5. E. Create a lifecycle policy for the objects in the S3 bucket.

Correct Answer: AB

- (Exam Topic 3)
A company has deployed a web application on AWS. The company hosts the backend database on Amazon RDS for MySQL with a primary DB instance and five read replicas to support scallng needs. The read replicas must lag no more than 1 second behind the primary DB instance. The database routinely runs scheduled stored procedures.
As traffic on the website increases, the replicas experince addtional lag during periods of peak load. A solutions architect must reduce the replication lag as much as possible. The solutin architect must minimize changes to the application code and must minimize ongoing operational overhead.
Which solution will meet these requirements?

1. A. Migrate the database to Amazon Aurora MySQ
2. B. Replace the read replicas with Aurora Replicas, and configure Aurora Auto Scalin
3. C. Replace the store procedures with Aurora MySQL native functions.
4. D. Deploy an Amazon ElasticCache for Redis cluster in front of the databas
5. E. Modify the application to check the cache before the applicatin queries the databas
6. F. Replace the stored procedures with AWS Lambda functions.
7. G. Migrate the database to a MySQL database that runs on Amazon EC2 instance
8. H. Choose large, compute optimized EC2 instances for all replica node
9. I. Maintain the stored procedures on the EC2 instances.
10. J. Migrate the database to Amazon DynamicDB provision a large number of read capacity units(RCUs) to support the required throught, and configure on-demand capacity scalin
11. K. Replace the store procedures with DynamoDB streams

Correct Answer: A

- (Exam Topic 3)
A company wants to restrict access to the content of one of its man web applications and to protect the content by using authorization techniques available on AWS. The company wants to implement a serverless architecture end an authentication solution for fewer tian 100 users. The solution needs to integrate with the main web application and serve web content globally. The solution must also scale as to company's user base grows while providing lowest login latency possible.

1. A. Use Amazon Cognito tor authenticatio
2. B. Use Lambda#Edge tor authorization Use Amazon CloudFront 10 serve the web application globally
3. C. Use AWS Directory Service for Microsoft Active Directory tor authentication Use AWS Lambda for authorization Use an Application Load Balancer to serve the web application globally
4. D. Usa Amazon Cognito for authentication Use AWS Lambda tor authorization Use Amazon S3 Transfer Acceleration 10 serve the web application globally.
5. E. Use AWS Directory Service for Microsoft Active Directory for authentication Use Lambda@Edge for authorization Use AWS Elastic Beanstalk to serve the web application.

Correct Answer: A

- (Exam Topic 3)
A company has a three-tier application for image sharing. The application uses an Amazon EC2 instance for the front-end layer, another EC2 instance for the application layer, and a third EC2 instance for a MySQL database. A solutions architect must design a scalable and highly available solution that requires the least amount of change to the application.
Which solution meets these requirements?

1. A. Use Amazon S3 to host the front-end laye
2. B. Use AWS Lambda functions for the application laye
3. C. Move the database to an Amazon DynamoDB tabl
4. D. Use Amazon S3 to store and serve users’ images.
5. E. Use load-balanced Multi-AZ AWS Elastic Beanstalk environments for the front-end layer and the application laye
6. F. Move the database to an Amazon RDS DB instance with multiple read replicas to serve users’ images.
7. G. Use Amazon S3 to host the front-end laye
8. H. Use a fleet of EC2 instances in an Auto Scaling group for the application laye
9. I. Move the database to a memory optimized instance type to store and serve users’ images.
10. J. Use load-balanced Multi-AZ AWS Elastic Beanstalk environments for the front-end layer and the application laye
11. K. Move the database to an Amazon RDS Multi-AZ DB instanc
12. L. Use Amazon S3 to store and serve users’ images.

Correct Answer: D
for "Highly available": Multi-AZ & for "least amount of changes to the application": Elastic Beanstalk automatically handles the deployment, from capacity provisioning, load balancing, auto-scaling to application health monitoring