AWS-Solution-Architect-Associate Free Practice Test

- (Exam Topic 3)
A company runs a web application that is backed by Amazon RDS. A new database administrator caused data loss by accidentally editing information in a database table To help recover from this type of incident, the company wants the ability to restore the database to its state from 5 minutes before any change within the last 30 days.
Which feature should the solutions architect include in the design to meet this requirement?

1. A. Read replicas
2. B. Manual snapshots
3. C. Automated backups
4. D. Multi-AZ deployments

Correct Answer: C

- (Exam Topic 1)
A development team runs monthly resource-intensive tests on its general purpose Amazon RDS for MySQL DB instance with Performance Insights enabled. The testing lasts for 48 hours once a month and is the only process that uses the database. The team wants to reduce the cost of running the tests without reducing the compute and memory attributes of the DB instance.
Which solution meets these requirements MOST cost-effectively?

1. A. Stop the DB instance when tests are complete
2. B. Restart the DB instance when required.
3. C. Use an Auto Scaling policy with the DB instance to automatically scale when tests are completed.
4. D. Create a snapshot when tests are complete
5. E. Terminate the DB instance and restore the snapshot when required.
6. F. Modify the DB instance to a low-capacity instance when tests are complete
7. G. Modify the DB instance again when required.

Correct Answer: A

- (Exam Topic 2)
A gaming company is designing a highly available architecture. The application runs on a modified Linux kernel and supports only UDP-based traffic. The company needs the front-end tier to provide the best possible user experience. That tier must have low latency, route traffic to the nearest edge location, and provide static IP addresses for entry into the application endpoints.
What should a solutions architect do to meet these requirements?

1. A. Configure Amazon Route 53 to forward requests to an Application Load Balance
2. B. Use AWS Lambda for the application in AWS Application Auto Scaling.
3. C. Configure Amazon CloudFront to forward requests to a Network Load Balance
4. D. Use AWS Lambda for the application in an AWS Application Auto Scaling group.
5. E. Configure AWS Global Accelerator to forward requests to a Network Load Balance
6. F. Use Amazon EC2 instances for the application in an EC2 Auto Scaling group.
7. G. Configure Amazon API Gateway to forward requests to an Application Load Balance
8. H. Use AmazonEC2 instances for the application in an EC2 Auto Scaling group.

Correct Answer: C

- (Exam Topic 3)
A company hosts a frontend application that uses an Amazon API Gateway API backend that is integrated with AWS Lambda When the API receives requests, the Lambda function loads many libranes Then the Lambda function connects to an Amazon RDS database processes the data and returns the data to the frontend application. The company wants to ensure that response latency is as low as possible for all its users with the fewest number of changes to the company's operations
Which solution will meet these requirements'?

1. A. Establish a connection between the frontend application and the database to make queries faster by bypassing the API
2. B. Configure provisioned concurrency for the Lambda function that handles the requests
3. C. Cache the results of the queries in Amazon S3 for faster retneval of similar datasets.
4. D. Increase the size of the database to increase the number of connections Lambda can establish at one time

Correct Answer: B
Configure provisioned concurrency for the Lambda function that handles the requests. Provisioned concurrency allows you to set the amount of compute resources that are available to the Lambda function, so that it can handle more requests at once and reduce latency. Caching the results of the queries in Amazon S3 could also help to reduce latency, but it would not be as effective as setting up provisioned concurrency. Increasing the size of the database would not help to reduce latency, as this would not increase the number of connections the Lambda function could establish, and establishing a direct connection between the frontend application and the database would bypass the API, which would not be the best solution either.
Using AWS Lambda with Amazon API Gateway - AWS Lambda https://docs.aws.amazon.com/lambda/latest/dg/services-apigateway.html AWS Lambda FAQs
https://aws.amazon.com/lambda/faqs/

- (Exam Topic 3)
A company's web application consists o( an Amazon API Gateway API in front of an AWS Lambda function and an Amazon DynamoDB database. The Lambda function
handles the business logic, and the DynamoDB table hosts the data. The application uses Amazon Cognito user pools to identify the individual users of the application. A solutions architect needs to update the application so that only users who have a subscription can access premium content.

1. A. Enable API caching and throttling on the API Gateway API
2. B. Set up AWS WAF on the API Gateway API Create a rule to filter users who have a subscription
3. C. Apply fine-grained IAM permissions to the premium content in the DynamoDB table
4. D. Implement API usage plans and API keys to limit the access of users who do not have a subscription.

Correct Answer: C