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Answer: Update the Auto Scaling group to launch new instances in a second Availability Zone in the same AWS Region.
To make the application highly available, the application must be distributed across multiple Availability Zones in the same AWS Region. Updating the Auto Scaling group to launch instances in a second Availability Zone achieves high availability by ensuring that if one Availability Zone goes down, the application remains available in the other.
Author: Ritesh Yadav
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Question #26
A company has an internal web application that runs on Amazon EC2 instances behind an Application Load Balancer. The instances run in an Amazon EC2 Auto Scaling group in a single Availability Zone. A CloudOps engineer must make the application highly available.
Which action should the CloudOps engineer take to meet this requirement?
A
Increase the maximum number of instances in the Auto Scaling group to meet the capacity that is required at peak usage.
B
Increase the minimum number of instances in the Auto Scaling group to meet the capacity that is required at peak usage.
C
Update the Auto Scaling group to launch new instances in a second Availability Zone in the same AWS Region.
D
Update the Auto Scaling group to launch new instances in an Availability Zone in a second AWS Region.
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