CLOUD COMPUTING

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CLOUD COMPUTING

AUTOSCALING

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
. You have started a new job and are reviewing your company s infrastructure on AWS. You notice one web application where they have an Elastic Load Balancer in front of web instances in an Auto Scaling Group. When you check the metrics for the ELB in CloudWatch you see four healthy instances in Availability Zone (AZ) A and zero in AZ B. There are zero unhealthy instances. What do you need to fix to balance the instances across AZs?
A
Set the ELB to only be attached to another AZ
B
Make sure Auto Scaling is configured to launch in both AZs
C
Make sure your AMI is available in both AZs
D
Make sure the maximum size of the Auto Scaling Group is greater than 4
Explanation: 

Detailed explanation-1: -AWS Trusted Advisor provides recommendations that help you follow AWS best practices. Trusted Advisor evaluates your account by using checks. These checks identify ways to optimize your AWS infrastructure, improve security and performance, reduce costs, and monitor service quotas.

Detailed explanation-2: -With AWS Config, you can discover existing and deleted AWS resources, determine your overall compliance against rules, and dive into configuration details of a resource at any point in time. These capabilities enable compliance auditing, security analysis, resource change tracking, and troubleshooting.

Detailed explanation-3: -AWS CloudFormation lets you model, provision, and manage AWS and third-party resources by treating infrastructure as code.

Detailed explanation-4: -The features work together to help you to build highly scalable and highly available applications. Amazon CloudWatch monitors your Amazon EC2 capacity, Auto Scaling dynamically scales it based on demand, and Elastic Load Balancing distributes load across multiple instances in one or more Availability Zones.

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