- (Exam Topic 3)
A company wants to experiment with individual AWS accounts for its engineer team. The company wants to be notified as soon as the Amazon EC2 instance usage for a given month exceeds a specific threshold for each account.
What should a solutions architect do to meet this requirement MOST cost-effectively?

1. A. Use Cost Explorer to create a daily report of costs by servic
2. B. Filter the report by EC2 instances.Configure Cost Explorer to send an Amazon Simple Email Service (Amazon SES) notification when a threshold is exceeded.
3. C. Use Cost Explorer to create a monthly report of costs by servic
4. D. Filter the report by EC2 instances.Configure Cost Explorer to send an Amazon Simple Email Service (Amazon SES) notification when a threshold is exceeded.
5. E. Use AWS Budgets to create a cost budget for each accoun
6. F. Set the period to monthl
7. G. Set the scope to EC2 instance
8. H. Set an alert threshold for the budge
9. I. Configure an Amazon Simple Notification Service (Amazon SNS) topic to receive a notification when a threshold is exceeded.
10. J. Use AWS Cost and Usage Reports to create a report with hourly granularit
11. K. Integrate the report data with Amazon Athen
12. L. Use Amazon EventBridge to schedule an Athena quer
13. M. Configure an Amazon Simple Notification Service (Amazon SNS) topic to receive a notification when a threshold is exceeded.

Correct Answer: C
AWS Budgets allows you to create budgets for your AWS accounts and set alerts when usage exceeds a certain threshold. By creating a budget for each account, specifying the period as monthly and the scope as EC2 instances, you can effectively track the EC2 usage for each account and be notified when a threshold is exceeded. This solution is the most cost-effective option as it does not require additional resources such as Amazon Athena or Amazon EventBridge.

- (Exam Topic 3)
An application runs on an Amazon EC2 instance that has an Elastic IP address in VPC A. The application requires access to a database in VPC B. Both VPCs are in the same AWS account.
Which solution will provide the required access MOST securely?

1. A. Create a DB instance security group that allows all traffic from the public IP address of the applicationserver in VPC A.
2. B. Configure a VPC peering connection between VPC A and VPC B.
3. C. Make the DB instance publicly accessibl
4. D. Assign a public IP address to the DB instance.
5. E. Launch an EC2 instance with an Elastic IP address into VPC
6. F. Proxy all requests through the new EC2 instance.

Correct Answer: B

- (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

- (Exam Topic 2)
A company runs an Oracle database on premises. As part of the company’s migration to AWS, the company wants to upgrade the database to the most recent available version. The company also wants to set up disaster recovery (DR) for the database. The company needs to minimize the operational overhead for normal operations and DR setup. The company also needs to maintain access to the database's underlying operating system.
Which solution will meet these requirements?

1. A. Migrate the Oracle database to an Amazon EC2 instanc
2. B. Set up database replication to a different AWS Region.
3. C. Migrate the Oracle database to Amazon RDS for Oracl
4. D. Activate Cross-Region automated backups to replicate the snapshots to another AWS Region.
5. E. Migrate the Oracle database to Amazon RDS Custom for Oracl
6. F. Create a read replica for the database in another AWS Region.
7. G. Migrate the Oracle database to Amazon RDS for Oracl
8. H. Create a standby database in another Availability Zone.

Correct Answer: C
https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/rds-custom.html and https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/working-with-custom-oracle.html

- (Exam Topic 3)
A company s order system sends requests from clients to Amazon EC2 instances The EC2 instances process the orders and men store the orders in a database on Amazon RDS Users report that they must reprocess orders when the system fails. The company wants a resilient solution that can process orders automatically it a system outage occurs.
What should a solutions architect do to meet these requirements?

1. A. Move (he EC2 Instances into an Auto Scaling group Create an Amazon EventBridge (Amazon CloudWatch Events) rule to target an Amazon Elastic Container Service (Amazon ECS) task
2. B. Move the EC2 instances into an Auto Scaling group behind an Application Load Balancer (ALB) Update the order system to send messages to the ALB endpoint.
3. C. Move the EC2 instances into an Auto Scaling group Configure the order system to send messages to an Amazon Simple Queue Service (Amazon SQS) queue Configure the EC2 instances to consume messages from the queue
4. D. Create an Amazon Simple Notification Service (Amazon SNS) topic Create an AWS Lambda function, and subscribe the function to the SNS topic Configure the order system to send messages to the SNS topic Send a command to the EC2 instances to process the messages by using AWS Systems Manager Run Command

Correct Answer: C