AWS-Solution-Architect-Associate Free Practice Test

- (Exam Topic 3)
A meteorological startup company has a custom web application to sell weather data to its users online. The company uses Amazon DynamoDB to store is data and wants to bu4d a new service that sends an alert to the managers of four Internal teams every time a new weather event is recorded. The company does not want true new service to affect the performance of the current application
What should a solutions architect do to meet these requirement with the LEAST amount of operational overhead?

1. A. Use DynamoDB transactions to write new event data to the table Configure the transactions to notify internal teams.
2. B. Have the current application publish a message to four Amazon Simple Notification Service (Amazon SNS) topic
3. C. Have each team subscribe to one topic.
4. D. Enable Amazon DynamoDB Streams on the tabl
5. E. Use triggers to write to a mingle Amazon Simple Notification Service (Amazon SNS) topic to which the teams can subscribe.
6. F. Add a custom attribute to each record to flag new item
7. G. Write a cron job that scans the table every minute for items that are new and notifies an Amazon Simple Queue Service (Amazon SOS) queue to which the teams can subscribe.

Correct Answer: C

- (Exam Topic 1)
A company runs an ecommerce application on Amazon EC2 instances behind an Application Load Balancer. The instances run in an Amazon EC2 Auto Scaling group across multiple Availability Zones. The Auto Scaling group scales based on CPU utilization metrics. The ecommerce application stores the transaction data in a MySQL 8.0 database that is hosted on a large EC2 instance.
The database's performance degrades quickly as application load increases. The application handles more read requests than write transactions. The company wants a solution that will automatically scale the database to meet the demand of unpredictable read workloads while maintaining high availability.
Which solution will meet these requirements?

1. A. Use Amazon Redshift with a single node for leader and compute functionality.
2. B. Use Amazon RDS with a Single-AZ deployment Configure Amazon RDS to add reader instances in a different Availability Zone.
3. C. Use Amazon Aurora with a Multi-AZ deploymen
4. D. Configure Aurora Auto Scaling with Aurora Replicas.
5. E. Use Amazon ElastiCache for Memcached with EC2 Spot Instances.

Correct Answer: C
AURORA is 5x performance improvement over MySQL on RDS and handles more read requests than write,; maintaining high availability = Multi-AZ deployment