Topic 1 Question 276

AWS Certified Solutions Architect - Associate

Topic 1 Question 276
A company has a multi-tier application deployed on several Amazon EC2 instances in an Auto Scaling group. An Amazon RDS for Oracle instance is the application’ s data layer that uses Oracle-specific PL/SQL functions. Traffic to the application has been steadily increasing. This is causing the EC2 instances to become overloaded and the RDS instance to run out of storage. The Auto Scaling group does not have any scaling metrics and defines the minimum healthy instance count only. The company predicts that traffic will continue to increase at a steady but unpredictable rate before leveling off.

What should a solutions architect do to ensure the system can automatically scale for the increased traffic?

2 つ選択
- Configure storage Auto Scaling on the RDS for Oracle instance.
- Migrate the database to Amazon Aurora to use Auto Scaling storage.
- Configure an alarm on the RDS for Oracle instance for low free storage space.
- Configure the Auto Scaling group to use the average CPU as the scaling metric.
- Configure the Auto Scaling group to use the average free memory as the scaling metric.
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- 正解だと思う選択肢: AD
  A) Configure storage Auto Scaling on the RDS for Oracle instance. = Makes sense. With RDS Storage Auto Scaling, you simply set your desired maximum storage limit, and Auto Scaling takes care of the rest.
  
  B) Migrate the database to Amazon Aurora to use Auto Scaling storage. = Scenario specifies application's data layer uses Oracle-specific PL/SQL functions. This rules out migration to Aurora.
  
  C) Configure an alarm on the RDS for Oracle instance for low free storage space. = You could do this but what does it fix? Nothing. The CW notification isn't going to trigger anything.
  
  D) Configure the Auto Scaling group to use the average CPU as the scaling metric. = Makes sense. The CPU utilization is the precursor to the storage outage. When the ec2 instances are overloaded, the RDS instance storage hits its limits, too.
  
  👍 10
  klayytech2023/04/01
- 正解だと思う選択肢: AD
  a and d
  
  👍 3
  Ja132023/02/21
- 正解だと思う選択肢: AD
  a and d
  
  👍 2
  GwonLEE2023/02/21
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