Questions 58 to 60
Explanations for questions 58 to 60
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Question 58
An application receives a high traffic load between 7:30 am and 9:30 am daily. The application uses an Auto Scaling group to maintain three instances most of the time, but during the peak period, it requires six instances.
How can a solutions architect configure Auto Scaling to perform a daily scale-out event at 7:30 am, and a scale-in event at 9:30 am to account for the peak load?
- Use a Simple scaling policy.
- Use a Scheduled scaling policy.
- Use a Dynamic scaling policy.
- Use a Step scaling policy.
Correct Answer: 2
Explanation: The following scaling policy options are available:
The Simple policy maintains a current number of instances; you can manually change the ASGs min/desired/max and attach/detach instances.
The Scheduled policy is used for predictable load changes( can be a single event or a recurring schedule).
The Dynamic (event-based) policy scales in response to an event/alarm.
The Step policy configures multiple scaling steps in response to multiple alarms.
INCORRECT: “Use a Simple scaling policy.” is incorrect. Please refer to the description above.
CORRECT: “Use a Scheduled scaling policy.” is the correct answer.
INCORRECT: “Use a Dynamic scaling policy.” is incorrect. Please refer to the description above.
INCORRECT: “Use a Step scaling policy.” is incorrect. Please refer to the description above.
References: https://docs.aws.amazon.com/autoscaling/ec2/userguide/schedule_time.html
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