Auto Scaling test - AWS Certified Solutions Architect - Associate questions

Question 1

What is the difference between scaling out and scaling up in Amazon EC2 Auto Scaling?

Scaling out moves instances to a different Auto Scaling group, while scaling up modifies the Auto Scaling group configuration Scaling out optimizes the network throughput, while scaling up optimizes the CPU utilization Scaling out launches instances in a different region, while scaling up reboots existing instances Scaling out adds more instances to an Auto Scaling group, while scaling up increases the capacity of existing instances in an Auto Scaling group

Correct Answer: Scaling out adds more instances to an Auto Scaling group, while scaling up increases the capacity of existing instances in an Auto Scaling group

Scaling out adds more instances to an Auto Scaling group, while scaling up increases the capacity of existing instances in an Auto Scaling group. Scaling out is used when there is insufficient capacity to handle the current load, while scaling up is used when increasing the compute power of the existing instances is a more cost-effective option.

Question 2

What is the purpose of a termination policy in Amazon EC2 Auto Scaling?

To specify the order in which instances are terminated when scaling in To specify the load balancer that will be used to distribute traffic To specify the instance type that will be used for scaling activities To specify the order in which instances are launched when scaling out

Correct Answer: To specify the order in which instances are terminated when scaling in

A termination policy is used to specify the order in which Auto Scaling group instances should be terminated when scaling in. The default policy is to terminate the oldest instance first, but you can specify other policies, such as terminating the instance with the lowest CPU utilization, or the instance that is launched closest to the next billing hour.

Question 3

What is the difference between a launch template and a launch configuration in Amazon EC2 Auto Scaling?

Both launch templates and launch configurations are versioned templates that can be updated over time. A launch template is a versioned template that can be modified and updated over time, while a launch configuration is a fixed configuration that cannot be modified once created. A launch template is a fixed configuration that cannot be modified once created, while a launch configuration is a versioned template that can be updated over time. A launch template is used to define scaling policies for an Auto Scaling group, while a launch configuration is used to define the instance types and storage volumes for the group.

Correct Answer: A launch template is a versioned template that can be modified and updated over time, while a launch configuration is a fixed configuration that cannot be modified once created.

Launch templates provide a more flexible and customizable option for configuring Auto Scaling groups, since they can be modified and updated over time, while launch configurations are fixed and cannot be modified once created. Launch templates can also support new features and resource types that are not available in launch configurations.

Auto Scaling

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