SOA-C02 · Question #153
A SysOps administrator is setting up a fleet of Amazon EC2 instances in an Auto Scaling group for an application. The fleet should have 50% CPU available at all times to accommodate bursts of…
The correct answer is B. Create a target tracking scaling policy that runs when the CPU utilization is higher than 50%. A target tracking scaling policy that maintains a 50% CPU threshold ensures that the fleet automatically adjusts its capacity based on actual load, keeping sufficient available CPU. Adding scheduled scaling policies to proactively scale out at 09:00 and scale in at 17:00…
Question
A SysOps administrator is setting up a fleet of Amazon EC2 instances in an Auto Scaling group for an application. The fleet should have 50% CPU available at all times to accommodate bursts of traffic. The load will increase significantly between the hours of 09:00 and 17:00, 7 days a week. How should the SysOps administrator configure the scaling of the EC2 instances to meet these requirements?
Options
- ACreate a target tracking scaling policy that runs when the CPU utilization is higher than 90%.
- BCreate a target tracking scaling policy that runs when the CPU utilization is higher than 50%.
- CSet the Auto Scaling group to start with 2 instances by setting the desired instances maximum
- DCreate a scheduled scaling policy that ensures that the fleet is available at 09.00.
How the community answered
(59 responses)- A3% (2)
- B76% (45)
- C14% (8)
- D7% (4)
Explanation
A target tracking scaling policy that maintains a 50% CPU threshold ensures that the fleet automatically adjusts its capacity based on actual load, keeping sufficient available CPU. Adding scheduled scaling policies to proactively scale out at 09:00 and scale in at 17:00 ensures that the fleet is appropriately sized before and after the predictable period of high load, thereby meeting the requirement to always have 50% CPU available for handling bursts.
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