- (Exam Topic 2)
An entertainment company is using Amazon DynamoDB to store media metadata. The application is read intensive and experiencing delays. The company does not have staff to handle additional operational overhead and needs to improve the performance efficiency of DynamoDB without reconfiguring the application.
What should a solutions architect recommend to meet this requirement?

1. A. Use Amazon ElastiCache for Redis.
2. B. Use Amazon DynamoDB Accelerator (DAX).
3. C. Replicate data by using DynamoDB global tables.
4. D. Use Amazon ElastiCache for Memcached with Auto Discovery enabled.

Correct Answer: B
https://aws.amazon.com/dynamodb/dax/

- (Exam Topic 1)
A company hosts a containerized web application on a fleet of on-premises servers that process incoming requests. The number of requests is growing quickly. The on-premises servers cannot handle the increased number of requests. The company wants to move the application to AWS with minimum code changes and minimum development effort.
Which solution will meet these requirements with the LEAST operational overhead?

1. A. Use AWS Fargate on Amazon Elastic Container Service (Amazon ECS) to run the containerized web application with Service Auto Scalin
2. B. Use an Application Load Balancer to distribute the incoming requests.
3. C. Use two Amazon EC2 instances to host the containerized web applicatio
4. D. Use an Application Load Balancer to distribute the incoming requests
5. E. Use AWS Lambda with a new code that uses one of the supported language
6. F. Create multiple Lambda functions to support the loa
7. G. Use Amazon API Gateway as an entry point to the Lambda functions.
8. H. Use a high performance computing (HPC) solution such as AWS ParallelClusterto establish an HPC cluster that can process the incoming requests at the appropriate scale.

Correct Answer: A

- (Exam Topic 1)
A company is migrating a distributed application to AWS The application serves variable workloads The legacy platform consists of a primary server trial coordinates jobs across multiple compute nodes The company wants to modernize the application with a solution that maximizes resiliency and scalability.
How should a solutions architect design the architecture to meet these requirements?

1. A. Configure an Amazon Simple Queue Service (Amazon SQS) queue as a destination for the jobs Implement the compute nodes with Amazon EC2 instances that are managed in an Auto Scaling grou
2. B. Configure EC2 Auto Scaling to use scheduled scaling
3. C. Configure an Amazon Simple Queue Service (Amazon SQS) queue as a destination for the jobs Implement the compute nodes with Amazon EC2 Instances that are managed in an Auto Scaling group Configure EC2 Auto Scaling based on the size of the queue
4. D. Implement the primary server and the compute nodes with Amazon EC2 instances that are managed In an Auto Scaling grou
5. E. Configure AWS CloudTrail as a destination for the fobs Configure EC2 Auto Scaling based on the load on the primary server
6. F. implement the primary server and the compute nodes with Amazon EC2 instances that are managed in an Auto Scaling group Configure Amazon EventBridge (Amazon CloudWatch Events) as a destination for the jobs Configure EC2 Auto Scaling based on the load on the compute nodes

Correct Answer: B

- (Exam Topic 3)
A company is running a critical business application on Amazon EC2 instances behind an Application Load Balancer The EC2 instances run in an Auto Scaling group and access an Amazon RDS DB instance
The design did not pass an operational review because the EC2 instances and the DB instance are all located in a single Availability Zone A solutions architect must update the design to use a second Availability Zone
Which solution will make the application highly available?

1. A. Provision a subnet in each Availability Zone Configure the Auto Scaling group to distribute the EC2 instances across bothAvailability Zones Configure the DB instance with connections to each network
2. B. Provision two subnets that extend across both Availability Zones Configure the Auto Scaling group to distribute the EC2 instancesacross both Availability Zones Configure the DB instance with connections to each network
3. C. Provision a subnet in each Availability Zone Configure the Auto Scaling group to distribute the EC2 instances across both Availability Zones Configure the DB instance for Multi-AZ deployment
4. D. Provision a subnet that extends across both Availability Zones Configure the Auto Scaling group to distribute the EC2 instancesacross both Availability Zones Configure the DB instance for Multi-AZ deployment

Correct Answer: C

- (Exam Topic 3)
A company has a web application hosted over 10 Amazon EC2 instances with traffic directed by Amazon Route 53. The company occasionally experiences a timeout error when attempting to browse the application. The networking team finds that some DNS queries return IP addresses of unhealthy instances, resulting in the timeout error.
What should a solutions architect implement to overcome these timeout errors?

1. A. Create a Route 53 simple routing policy record for each EC2 instanc
2. B. Associate a health check with each record.
3. C. Create a Route 53 failover routing policy record for each EC2 instanc
4. D. Associate a health check with each record.
5. E. Create an Amazon CloudFront distribution with EC2 instances as its origi
6. F. Associate a health check with the EC2 instances.
7. G. Create an Application Load Balancer (ALB) with a health check in front of the EC2 instance
8. H. Route to the ALB from Route 53.

Correct Answer: D
An Application Load Balancer (ALB) allows you to distribute incoming traffic across multiple backend instances, and can automatically route traffic to healthy instances while removing traffic from unhealthy instances. By using an ALB in front of the EC2 instances and routing traffic to it from Route 53, the load balancer can perform health checks on the instances and only route traffic to healthy instances, which should help to reduce or eliminate timeout errors caused by unhealthy instances.