The Resources for a Business-Critical, Three-Tier Web Application Are Expressed

question 369

Multiple Choice

The resources for a business-critical, three-tier web application are expressed in a series of AWS CloudFormation templates. The application is using Amazon RDS for data and Amazon ElastiCache for session state. Users have reported degraded performance in the application. A DevOps Engineer notices that the T2 instance type is being used for the application tier and CPU usage is at 100% in Amazon CloudWatch. What process should the Engineer follow to restore operations with the LEAST amount of distribution to the end users?

• A) Write a new CloudFormation template to include Amazon CloudFront in the environment, launch the stack, and update the Amazon Route 53 A record
• B) Launch a new CloudFormation stack for the application tier using the M4 instance type, run acceptance tests against the new stack, and update the Amazon Route 53 A record
• C) Update the CloudFormation stack for the application tier using the T2 Unlimited option, run acceptance tests against the new stack, and update the Amazon Route 53 A record
• D) Launch a new CloudFormation stack for all tiers of the application in a different region, run acceptance tests against the new stack, and update the Amazon Route 53 A record

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Definitions:

Stomata

Small openings on the surfaces of plant leaves and stems that facilitate gas exchange.

Vascular Tissue

Specialized tissue in plants that is responsible for the transport of water and nutrients throughout the plant body.

Ground Tissue

Plant tissue that makes up the bulk of the plant body, involved in photosynthesis, storage, and support, excluding the vascular and dermal tissues.

Dermal Tissue

Dermal tissue is a protective outer layer of cells in plants, equivalent to skin in animals, that serves as the first defense barrier against the environment.