You are responsible for your company’s large multi-tiered Windows-based web application running on Amazon EC2 instances situated behind a load balancer. While reviewing metrics, you’ve started noticing an upwards trend for slow customer page load time. Your manager has asked you to come up with a solution to ensure that customer load time is not affected by too many requests per second. Which technique would you use to solve this issue?

Answer options:

A.Re-deploy your infrastructure using an AWS CloudFormation template.Configure Elastic Load Balancing health checks to initiate a new AWS CloudFormation stack when health checks return failed.
B.Re-deploy your infrastructure using an AWS CloudFormation template. Spin up a second AWS CloudFormation stack.Configure Elastic Load Balancing SpillOver functionality to spill over any slow connections to the second AWS CloudFormation stack.
C.Re-deploy your infrastructure with CloudFormation. Set up Autoscaling group policies to scale based on the number of requests per second and customer current load time.
D.Re-deploy your application using an Auto Scaling template.Configure the Auto Scaling template to spin up a new Elastic Beanstalk application when the customer load time surpasses your threshold.

Answer – C
Auto Scaling helps you ensure that you have the correct number of Amazon EC2 instances available to handle the load for your application. You create collections of EC2 instances, called Auto Scaling groups. You can specify the minimum number of instances in each Auto Scaling group, and Auto Scaling ensures that your group never goes below this size. You can specify the maximum number of instances in each Auto Scaling group, and Auto Scaling ensures that your group never goes above this size. If you specify the desired capacity, either when you create the group or at any time thereafter, Auto Scaling ensures that your group has this many instances. If you specify scaling policies, then Auto Scaling can launch or terminate instances as demand on your application increases or decreases.
Option A and B are invalid because Autoscaling is required to solve the issue to ensure the application can handle high traffic loads.
Option D is invalid because there is no Autoscaling template.
For more information on Autoscaling, please refer to the below document link: from AWS
http://docs.aws.amazon.com/autoscaling/latest/userguide/WhatIsAutoScaling.html