AWS-Certified-Solutions-Architect-Professional Free Practice Test

- (Exam Topic 3)
An online magazine will launch its latest edition this month. This edition will be the first to be distributed globally. The magazine's dynamic website currently uses an Application Load Balancer in front of the web tier, a fleet of Amazon EC2 instances for web and application servers, and Amazon Aurora MySQL. Portions of the website include static content and almost all traffic is read-only.
The magazine is expecting a significant spike in internet traffic when the new edition is launched. Optimal performance is a top priority for the week following the launch.
Which combination of steps should a solutions architect take to reduce system response times for a global audience? (Choose two.)

1. A. Use logical cross-Region replication to replicate the Aurora MySQL database to a secondary Region.Replace the web servers with Amazon S3. Deploy S3 buckets in cross-Region replication mode.
2. B. Ensure the web and application tiers are each in Auto Scaling group
3. C. Introduce an AWS Direct Connect connectio
4. D. Deploy the web and application tiers in Regions across the world.
5. E. Migrate the database from Amazon Aurora to Amazon RDS for MySQ
6. F. Ensure all three of the application tiers €" web, application, and database €" are in private subnets.
7. G. Use an Aurora global database for physical cross-Region replicatio
8. H. Use Amazon S3 with cross-Region replication for static content and resource
9. I. Deploy the web and application tiers in Regions across theworld.
10. J. Introduce Amazon Route 53 with latency-based routing and Amazon CloudFront distribution
11. K. Ensure the web and application tiers are each in Auto Scaling groups.

Correct Answer: DE

- (Exam Topic 1)
A company is building an electronic document management system in which users upload their documents. The application stack is entirely serverless and runs on AWS in the eu-central-1 Region. The system includes a web application that uses an Amazon CloudFront distribution for delivery with Amazon S3 as the origin. The web application communicates with Amazon API Gateway Regional endpoints. The API Gateway APIs call AWS Lambda functions that store metadata in an Amazon Aurora Serverless database and put the documents into an S3 bucket.
The company is growing steadily and has completed a proof of concept with its largest customer. The company must improve latency outside of Europe.
Which combination of actions will meet these requirements? (Select TWO.)

1. A. Enable S3 Transfer Acceleration on the S3 bucke
2. B. Ensure that the web application uses the Transfer Acceleration signed URLs.
3. C. Create an accelerator in AWS Global Accelerato
4. D. Attach the accelerator to the CloudFront distribution.
5. E. Change the API Gateway Regional endpoints to edge-optimized endpoints.
6. F. Provision the entire stack in two other locations that are spread across the worl
7. G. Use global databases on the Aurora Serverless cluster.
8. H. Add an Amazon RDS proxy between the Lambda functions and the Aurora Serverless database.

Correct Answer: AC
https://aws.amazon.com/global-accelerator/faqs/

- (Exam Topic 1)
A retail company has an on-premises data center in Europe. The company also has a multi-Region AWS presence that includes the eu-west-1 and us-east-1 Regions. The company wants to be able to route network traffic from its on-premises infrastructure into VPCs in either of those Regions. The company also needs to support traffic that is routed directly between VPCs in those Regions. No single points of failure can exist on the network.
The company already has created two 1 Gbps AWS Direct Connect connections from its on-premises data center. Each connection goes into a separate Direct Connect location in Europe for high availability. These two locations are named DX-A and DX-B, respectively. Each Region has a single AWS Transit Gateway that is configured to route all inter-VPC traffic within that Region.
Which solution will meet these requirements?

1. A. Create a private VIF from the DX-A connection into a Direct Connect gatewa
2. B. Create a private VIF from the DX-B connection into the same Direct Connect gateway for high availabilit
3. C. Associate both the eu-west-1 and us-east-1 transit gateways with the Direct Connect gatewa
4. D. Peer the transit gatewayswith each other to support cross-Region routing.
5. E. Create a transit VIF from the DX-A connection into a Direct Connect gatewa
6. F. Associate the eu-west-1 transit gateway with this Direct Connect gatewa
7. G. Create a transit VIF from the DX-B connection into a separate Direct Connect gatewa
8. H. Associate the us-east-1 transit gateway with this separate Direct Connect gatewa
9. I. Peer the Direct Connect gateways with each other to support high availability and cross-Region routing.
10. J. Create a transit VIF from the DX-A connection into a Direct Connect gatewa
11. K. Create a transit VIF from the DX-B connection into the same Direct Connect gateway for high availabilit
12. L. Associate both the eu-west-1 and us-east-1 transit gateways with this Direct Connect gatewa
13. M. Configure the Direct Connect gateway to route traffic between the transit gateways.
14. N. Create a transit VIF from the DX-A connection into a Direct Connect gatewa
15. O. Create a transit VIF from the DX-B connection into the same Direct Connect gateway for high availabilit
16. P. Associate both the eu-west-1 and us-east-1 transit gateways with this Direct Connect gatewa
17. Q. Peer the transit gateways with each other to support cross-Region routing.

Correct Answer: D
in this solution, two transit VIFs are created - one from the DX-A connection and one from the DX-B connection - into the same Direct Connect gateway for high availability. Both the eu-west-1 and us-east-1 transit gateways are then associated with this Direct Connect gateway. The transit gateways are then peered with each other to support cross-Region routing. This solution meets the requirements of the company by creating a highly available connection between the on-premises data center and the VPCs in both the eu-west-1 and us-east-1 regions, and by enabling direct traffic routing between VPCs in those regions.

- (Exam Topic 3)
A company needs to store and process image data that will be uploaded from mobile devices using a custom mobile app. Usage peaks between 8 AM and 5 PM on weekdays, with thousands of uploads per minute. The app is rarely used at any other time. A user is notified when image processing is complete.
Which combination of actions should a solutions architect take to ensure image processing can scale to handle the load? (Select THREE.)

1. A. Upload files from the mobile software directly to Amazon S3. Use S3 event notifications to create a message in an Amazon MQ queue.
2. B. Upload files from the mobile software directly to Amazon S3. Use S3 event notifications to create a message in an Amazon Simple Queue Service (Amazon SOS) standard queue.
3. C. Invoke an AWS Lambda function to perform image processing when a message is available in the queue.
4. D. Invoke an S3 Batch Operations job to perform image processing when a message is available in the queue
5. E. Send a push notification to the mobile app by using Amazon Simple Notification Service (Amazon SNS) when processing is complete.
6. F. Send a push notification to the mobile app by using Amazon Simple Email Service (Amazon SES) when processing is complete.

Correct Answer: BCE
The best solution is to upload files from the mobile software directly to Amazon S3, use S3 event notifications to create a message in an Amazon Simple Queue Service (Amazon SQS) standard queue, and invoke an AWS Lambda function to perform image processing when a message is available in the queue. This solution will ensure that image processing can scale to handle the load, as Amazon S3 can store any amount of data and handle concurrent uploads, Amazon SQS can buffer the messages and deliver them reliably, and AWS Lambda can run code without provisioning or managing servers and scale automatically based on the demand. This solution will also notify the user when processing is complete by sending a push notification to the mobile app using Amazon Simple Notification Service (Amazon SNS), which is a web service that enables applications to send and receive notifications from the cloud. This solution is more cost-effective than using Amazon MQ, which is a managed message broker service for Apache ActiveMQ that requires a dedicated broker instance, or S3 Batch Operations, which is a feature that allows users to perform bulk actions on S3 objects, such as copying or tagging, but does not support custom code execution. This solution is also more suitable than using Amazon Simple Email Service (Amazon SES), which is a web service that enables applications to send and receive email messages, but does not support push notifications for mobile devices. References: Amazon S3 Documentation, Amazon SQS Documentation, AWS Lambda Documentation, Amazon SNS Documentation

- (Exam Topic 3)
A financial services company runs a complex, multi-tier application on Amazon EC2 instances and AWS Lambda functions. The application stores temporary data in Amazon S3. The S3 objects are valid for only 45 minutes and are deleted after 24 hours.
The company deploys each version of the application by launching an AWS CloudFormation stack. The stack creates all resources that are required to run the application. When the company deploys and validates a new application version, the company deletes the CloudFormation stack of the old version.
The company recently tried to delete the CloudFormation stack of an old application version, but the operation failed. An analysis shows that CloudFormation failed to delete an existing S3 bucket. A solutions architect needs to resolve this issue without making major changes to the application's architecture.
Which solution meets these requirements?

1. A. Implement a Lambda function that deletes all files from a given S3 bucke
2. B. Integrate this Lambda function as a custom resource into the CloudFormation stac
3. C. Ensure that the custom resource has a DependsOn attribute that points to the S3 bucket's resource.
4. D. Modify the CloudFormation template to provision an Amazon Elastic File System (Amazon EFS) file system to store the temporary files there instead of in Amazon S3. Configure the Lambda functions to run in the same VPC as the file syste
5. E. Mount the file system to the EC2 instances and Lambda functions.
6. F. Modify the CloudFormation stack to create an S3 Lifecycle rule that expires all objects 45 minutes after creatio
7. G. Add a DependsOn attribute that points to the S3 bucket's resource.
8. H. Modify the CloudFormation stack to attach a DeletionPolicy attribute with a value of Delete to the S3 bucket.

Correct Answer: D
This option allows the solutions architect to use a DeletionPolicy attribute to specify how AWS CloudFormation handles the deletion of an S3 bucket when the stack is deleted1. By setting the value of Delete, the solutions architect can instruct CloudFormation to delete the bucket and all of its contents1. This option does not require any major changes to the application’s architecture or any additional resources.
References:
Deletion policies