Which of the following options are valid?

A software company has resources hosted in AWS and on-premises servers. You have been requested to create a decoupled architecture for applications which make use of both resources .

Which of the following options are valid? (Select TWO.)
A . Use DynamoDB to utilize both on-premises servers and EC2 instances for your decoupled application
B . Use SQS to utilize both on-premises servers and EC2 instances for your decoupled application
C . Use SWF to utilize both on-premises servers and EC2 instances for your decoupled application
D . Use RDS to utilize both on-premises servers and EC2 instances for your decoupled application
E . Use VPC peering to connect both on-premises servers and EC2 instances for your decoupled
application

View Answer

Answer: B,C

Explanation:

Amazon Simple Queue Service (SQS) and Amazon Simple Workflow Service (SWF) are the services that you can use for creating a decoupled architecture in AWS. Decoupled architecture is a type of computing architecture that enables computing components or layers to execute independently while still interfacing with each other.

Amazon SQS offers reliable, highly-scalable hosted queues for storing messages while they travel between applications or microservices. Amazon SQS lets you move data between distributed application components and helps you decouple these components. Amazon SWF is a web service that makes it easy to coordinate work across distributed application components.

Using RDS to utilize both on-premises servers and EC2 instances for your decoupled application and using DynamoDB to utilize both on-premises servers and EC2 instances for your decoupled application are incorrect as RDS and DynamoDB are database services.

Using VPC peering to connect both on-premises servers and EC2 instances for your decoupled

application is incorrect because you can’t create a VPC peering for your on-premises network and AWS

VPC.

References:

https://aws.amazon.com/sqs/

http://docs.aws.amazon.com/amazonswf/latest/developerguide/swf-welcome.html

Check out this Amazon SQS Cheat Sheet:

https://tutorialsdojo.com/amazon-sqs/

Amazon Simple Workflow (SWF) vs AWS Step Functions vs Amazon SQS:

https://tutorialsdojo.com/amazon-simple-workflow-swf-vs-aws-step-functions-vs-amazon-sqs/

Comparison of AWS Services Cheat Sheets:

https://tutorialsdojo.com/comparison-of-aws-services/