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Answer: Amazon EC2 Auto Scaling works with both Application Load Balancers and Network Load Balancers, Amazon EC2 Auto Scaling cannot add a volume to an existing instance if the existing volume is approaching capacity
Overall explanation Correct options: Amazon EC2 Auto Scaling is a fully managed service designed to launch or terminate Amazon EC2 instances automatically to help ensure you have the correct number of Amazon EC2 instances available to handle the load for your application. Amazon EC2 Auto Scaling cannot add a volume to an existing instance if the existing volume is approaching capacity - A volume is attached to a new instance when it is added. Amazon EC2 Auto Scaling doesn't automatically add a volume when the existing one is approaching capacity. You can use the EC2 API to add a volume to an existing instance. Amazon EC2 Auto Scaling works with both Application Load Balancers and Network Load Balancers - Amazon EC2 Auto Scaling works with Application Load Balancers and Network Load Balancers including their health check feature. Incorrect options: EC2 Auto Scaling groups are regional constructs. They span across Availability Zones and AWS regions - This is an incorrect statement. EC2 Auto Scaling groups are regional constructs. They can span Availability Zones, but not AWS regions. Every time you create an Auto Scaling group from an existing instance, it creates a new AMI (Amazon Machine Image) - This is an incorrect statement. When you create an Auto Scaling group from an existing instance, it does not create a new AMI.
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As a mentor for a new recruit trying to understand the nuances of EC2 Auto Scaling, a critical component of managing scalable applications on AWS, you have been asked to guide them in identifying and explaining the correct statements about Auto Scaling.
Can you identify and explain the correct statements about Auto Scaling to the new recruit? (Select two).
A
Amazon EC2 Auto Scaling works with both Application Load Balancers and Network Load Balancers
B
You cannot use Amazon EC2 Auto Scaling for health checks (to replace unhealthy instances) if you are not using Elastic Load Balancing (ELB)
C
Amazon EC2 Auto Scaling cannot add a volume to an existing instance if the existing volume is approaching capacity
D
Every time you create an Auto Scaling group from an existing instance, it creates a new AMI (Amazon Machine Image)
E
EC2 Auto Scaling groups are regional constructs. They span across Availability Zones and AWS regions