A Company's Web Application Is Using Multiple Linux Amazon EC2

question 478

Multiple Choice

A company's web application is using multiple Linux Amazon EC2 instances and storing data on Amazon Elastic Block Store (Amazon EBS) volumes. The company is looking for a solution to increase the resiliency of the application in case of a failure and to provide storage that complies with atomicity, consistency, isolation, and durability (ACID) . What should a solutions architect do to meet these requirements?

• A) Launch the application on EC2 instances in each Availability Zone. Attach EBS volumes to each EC2 instance.
• B) Create an Application Load Balancer with Auto Scaling groups across multiple Availability Zones. Mount an instance store on each EC2 instance.
• C) Create an Application Load Balancer with Auto Scaling groups across multiple Availability Zones. Store data on Amazon Elastic File System (Amazon EFS) and mount a target on each instance.
• D) Create an Application Load Balancer with Auto Scaling groups across multiple Availability Zones. Store data using Amazon S3 One Zone-Infrequent Access (S3 One Zone-IA).

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Definitions:

Formal Operations

The final stage in Piaget’s theory of cognitive development, characterized by the ability to think abstractly, logically, and systematically.

Sensorimotor Stage

The first of Piaget's developmental stages, where infants from birth to about 2 years old learn through interacting with their environment.

Physical Interaction

The process by which two or more bodies influence each other through physical forces like gravity, electromagnetism, or contact forces.

Logical Reasoning

The process of using a logical sequence to derive a conclusion from a set of premises, often used in problem-solving.