AWS-Solution-Architect-Associate Free Practice Test

- (Exam Topic 2)
A company wants to run a gaming application on Amazon EC2 instances that are part of an Auto Scaling group in the AWS Cloud. The application will transmit data by using UDP packets. The company wants to ensure that the application can scale out and in as traffic increases and decreases.
What should a solutions architect do to meet these requirements?

1. A. Attach a Network Load Balancer to the Auto Scaling group
2. B. Attach an Application Load Balancer to the Auto Scaling group.
3. C. Deploy an Amazon Route 53 record set with a weighted policy to route traffic appropriately
4. D. Deploy a NAT instance that is configured with port forwarding to the EC2 instances in the Auto Scaling group.

Correct Answer: B

- (Exam Topic 3)
A company runs an application on a large fleet of Amazon EC2 instances. The application reads and write entries into an Amazon DynamoDB table. The size of the DynamoDB table continuously grows, but the application needs only data from the last 30 days. The company needs a solution that minimizes cost and development effort.
Which solution meets these requirements?

1. A. Use an AWS CloudFormation template to deploy the complete solutio
2. B. Redeploy the CloudFormation stack every 30 days, and delete the original stack.
3. C. Use an EC2 instance that runs a monitoring application from AWS Marketplac
4. D. Configure the monitoring application to use Amazon DynamoDB Streams to store the timestamp when a new item is created in the tabl
5. E. Use a script that runs on the EC2 instance to delete items that have a timestamp that is older than 30 days.
6. F. Configure Amazon DynamoDB Streams to invoke an AWS Lambda function when a new item is created in the tabl
7. G. Configure the Lambda function to delete items in the table that are older than 30 days.
8. H. Extend the application to add an attribute that has a value of the current timestamp plus 30 days to each new item that is created in the tabl
9. I. Configure DynamoDB to use the attribute as the TTL attribute.

Correct Answer: D
Amazon DynamoDB Time to Live (TTL) allows you to define a per-item timestamp to determine when an item is no longer needed. Shortly after the date and time of the specified timestamp, DynamoDB deletes the item from your table without consuming any write throughput. TTL is provided at no extra cost as a means to reduce stored data volumes by retaining only the items that remain current for your workload’s needs.
TTL is useful if you store items that lose relevance after a specific time. The following are example TTL use cases:
Remove user or sensor data after one year of inactivity in an application.
Archive expired items to an Amazon S3 data lake via Amazon DynamoDB Streams and AWS Lambda. Retain sensitive data for a certain amount of time according to contractual or regulatory obligations. https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/TTL.html

- (Exam Topic 3)
A medical research lab produces data that is related to a new study. The lab wants to make the data available with minimum latency to clinics across the country for their on-premises, file-based applications. The data files are stored in an Amazon S3 bucket that has read-only permissions for each clinic.
What should a solutions architect recommend to meet these requirements?

1. A. Deploy an AWS Storage Gateway file gateway as a virtual machine (VM) on premises at each clinic
2. B. Migrate the files to each clinic’s on-premises applications by using AWS DataSync for processing.
3. C. Deploy an AWS Storage Gateway volume gateway as a virtual machine (VM) on premises at each clinic.
4. D. Attach an Amazon Elastic File System (Amazon EFS) file system to each clinic’s on-premises servers.

Correct Answer: A
AWS Storage Gateway is a service that connects an on-premises software appliance with cloud-based storage to provide seamless and secure integration between an organization's on-premises IT environment and AWS's storage infrastructure. By deploying a file gateway as a virtual machine on each clinic's premises, the medical research lab can provide low-latency access to the data stored in the S3 bucket while maintaining read-only permissions for each clinic. This solution allows the clinics to access the data files directly from their
on-premises file-based applications without the need for data transfer or migration.

- (Exam Topic 3)
A solution architect must create a disaster recovery (DR) plan for a high-volume software as a service (SaaS) platform. All data for the platform is stored in an Amazon Aurora MySQL DB cluster.
The DR plan must replcate data to a secondary AWS Region.
Which solution will meet these requirements MOST cost-effectively? Use MySQL binary log replication to an Aurora cluster

1. A. Use MySQL binary log replication to an Aurora cluster in the secondary Region Provision one DB instance for the Aurora cluster in the secondary Region.
2. B. Set up an Aurora global database for the DB cluste
3. C. When setup is complete, remove the DB instance from the secondary Region.
4. D. Use AWS Database Migration Service (AWS QMS) to continuously replicate data to an Aurora cluster in the secondary Region Remove theDB instance from the secondary Region.
5. E. Set up an Aurora global database for the DB cluster Specify a minimum of one DB instance in the secondary Region

Correct Answer: D

- (Exam Topic 2)
A company runs a web-based portal that provides users with global breaking news, local alerts, and weather updates. The portal delivers each user a personalized view by using mixture of static and dynamic content. Content is served over HTTPS through an API server running on an Amazon EC2 instance behind an Application Load Balancer (ALB). The company wants the portal to provide this content to its users across the world as quickly as possible.
How should a solutions architect design the application to ensure the LEAST amount of latency for all users?

1. A. Deploy the application stack in a single AWS Regio
2. B. Use Amazon CloudFront to serve all static and dynamic content by specifying the ALB as an origin.
3. C. Deploy the application stack in two AWS Region
4. D. Use an Amazon Route 53 latency routing policy to serve all content from the ALB in the closest Region.
5. E. Deploy the application stack in a single AWS Regio
6. F. Use Amazon CloudFront to serve the static conten
7. G. Serve the dynamic content directly from the ALB.
8. H. Deploy the application stack in two AWS Region
9. I. Use an Amazon Route 53 geolocation routing policy to serve all content from the ALB in the closest Region.

Correct Answer: A
https://aws.amazon.com/blogs/networking-and-content-delivery/deliver-your-apps-dynamic-content-using-amaz