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A company's application on EC2 instances relies on a Single-AZ RDS for MySQL DB instance. The SysOps administrator needs to ensure failover to minimize downtime.
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The SysOps administrator needs to address high disk I/O issues during EC2 instance bootstrap in an Auto Scaling group.

Question 59 - SOA-C02 discussion

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A company has a stateless application that is hosted on a fleet of 10 Amazon EC2 On-Demand Instances in an Auto Scaling group. A minimum of 6 instances are needed to meet service requirements. Which action will maintain uptime for the application MOST cost-effectively?

A.
Use a Spot Fleet with an On-Demand capacity of 6 instances.
Answers
A.
Use a Spot Fleet with an On-Demand capacity of 6 instances.
B.
Update the Auto Scaling group with a minimum of 6 On-Demand Instances and a maximum of 10 On-Demand Instances.
Answers
B.
Update the Auto Scaling group with a minimum of 6 On-Demand Instances and a maximum of 10 On-Demand Instances.
C.
Update the Auto Scaling group with a minimum of 1 On-Demand Instance and a maximum of 6 On-Demand Instances.
Answers
C.
Update the Auto Scaling group with a minimum of 1 On-Demand Instance and a maximum of 6 On-Demand Instances.
D.
Use a Spot Fleet with a target capacity of 6 instances.
Answers
D.
Use a Spot Fleet with a target capacity of 6 instances.
Suggested answer: A

Explanation:

Amazon EC2 Auto Scaling allocates your Spot Instances from the N number of pools per Availability Zone that you specify and from the Spot Instance pools with the lowest price in each Availability Zone.

Reference: https://docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-mixed-instances-groups.html

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asked 16/09/2024
Duc Hai
45 questions
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