SOA-C02 · Question #692
A SysOps administrator is configuring an Auto Scaling group of Amazon EC2 instances for an application. The average CPU utilization of the instances in the Auto Scaling group must remain at…
The correct answer is D. Configure a target tracking scaling policy. Specify a target value of 40 for average CPU utilization. Target tracking automatically adjusts the Auto Scaling group size to hold the specified metric (average CPU utilization) close to the target (40%), without requiring you to define individual alarms or scaling steps. This “set-and-forget” approach is the most operationally…
Question
A SysOps administrator is configuring an Auto Scaling group of Amazon EC2 instances for an application. The average CPU utilization of the instances in the Auto Scaling group must remain at approximately 40% when the load on the application changes. Which solution will meet this requirement in the MOST operationally efficient manner?
Options
- ACreate a scheduled scaling action. Configure the action to run at times when the application
- BConfigure a simple scaling policy. Create an Amazon CloudWatch alarm that enters ALARM state
- CConfigure a step scaling policy. Create an Amazon CloudWatch alarm that enters ALARM state
- DConfigure a target tracking scaling policy. Specify a target value of 40 for average CPU utilization.
How the community answered
(45 responses)- A13% (6)
- B4% (2)
- C7% (3)
- D76% (34)
Explanation
Target tracking automatically adjusts the Auto Scaling group size to hold the specified metric (average CPU utilization) close to the target (40%), without requiring you to define individual alarms or scaling steps. This “set-and-forget” approach is the most operationally efficient way to maintain the desired CPU utilization as load fluctuates.
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