Which action should the SysOps administrator take to meet this requirement?

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 SysOps administrator must make the application highly available.

Which action should the SysOps administrator 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.

View Answer

Answer: C

Explanation:

To make the application highly available, update the Auto Scaling group to launch new instances in a second Availability Zone within the same AWS Region.

Understand High Availability Requirements:

High availability involves distributing instances across multiple Availability Zones to ensure the application remains accessible even if one Availability Zone experiences issues.

Reference: Regions, Availability Zones, and Local Zones

Update Auto Scaling Group Configuration:

Navigate to the EC2 console.

Select "Auto Scaling Groups" and choose the Auto Scaling group for your application.

Update the "Network" section to include additional subnets from different Availability Zones within the same region.

Reference: Configuring your Auto Scaling group to launch instances in multiple Availability Zones Adjust Capacity Settings:

Ensure the desired and minimum capacity settings are configured to distribute instances across multiple Availability Zones.

Save the changes.

By launching instances in multiple Availability Zones, the application can handle failures in one zone, achieving high availability.