Oracle Cloud Infrastructure 2022 Architect Professional — Question 45

You work for a bank as the lead Oracle Cloud Infrastructure architect. You designed a highly scalable solution for your company's banking application. The architecture includes a load balancer, application servers with autoscaling configuration based on CPU utilization, and an Autonomous Database with Transaction Processing workload type running in a Virtual Cloud Network (VCN).
During the peak utilization period, the application users complain that the application runs slow.
What are two possible reasons for the application running slow at times? (Choose two.)

Answer options

• A. Instance pool in autoscaling configuration for the Autonomous Database did not scale out due to misconfigured scaling policy.
• B. Instance pool in autoscaling configuration for the application servers did not scale out due to compartment quota breach of the VM shapes used by the application servers.
• C. The load balancer is not configured correctly to send traffic to all the listeners of the application servers in the backend set.
• D. Instance pool in autoscaling configuration for the application servers did not scale out due to service limit breach of the VM shapes used by the application servers.
• E. The VCN does not have a Network Security Group configured to allow traffic from the load balancer to all the application servers in the backend set.

Correct answer: B, D

Explanation

The correct answers are B and D because if the instance pool for application servers does not scale out due to a compartment quota breach (B) or a service limit breach (D), it can lead to insufficient resources to handle peak loads. Options A, C, and E do not directly explain the application's performance issues during high utilization periods, as they pertain to different configurations that would not specifically cause slow performance.