Topic 1 Question 4
A company is running a two-tier web-based application in an on-premises data center. The application layer consists of a single server running a stateful application. The application connects to a PostgreSQL database running on a separate server. The application’s user base is expected to grow significantly, so the company is migrating the application and database to AWS. The solution will use Amazon Aurora PostgreSQL, Amazon EC2 Auto Scaling, and Elastic Load Balancing. Which solution will provide a consistent user experience that will allow the application and database tiers to scale?
Enable Aurora Auto Scaling for Aurora Replicas. Use a Network Load Balancer with the least outstanding requests routing algorithm and sticky sessions enabled.
Enable Aurora Auto Scaling for Aurora writers. Use an Application Load Balancer with the round robin routing algorithm and sticky sessions enabled.
Enable Aurora Auto Scaling for Aurora Replicas. Use an Application Load Balancer with the round robin routing and sticky sessions enabled.
Enable Aurora Scaling for Aurora writers. Use a Network Load Balancer with the least outstanding requests routing algorithm and sticky sessions enabled.
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コメント(13)
C.
- Aurora writers is a distractor.
- Single master mode only has read replica - with Aurora replicas.
- Multi master mode, not in the options
- NLB does not support round robin and least outstanding algorithm
https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/Aurora.Integrating.AutoScaling.html
👍 14robertohyena2022/12/10- 正解だと思う選択肢: C
The best solution to provide a consistent user experience that will allow the application and database tiers to scale would be option C:
C. Enable Aurora Auto Scaling for Aurora Replicas. Use an Application Load Balancer with the round robin routing and sticky sessions enabled.
This solution involves enabling Aurora Auto Scaling for Aurora Replicas to automatically add and remove read replicas to match the application's workload. The solution also uses an Application Load Balancer to distribute traffic to the application layer, with the round robin routing algorithm to balance the traffic evenly across multiple instances. Sticky sessions should be enabled to maintain session affinity for each user, allowing for a consistent user experience.
👍 8c73bf382023/02/14 - 正解だと思う選択肢: C
Correct ans is c
👍 2Arun_Bala2022/12/17
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