Câu 80: ANS-C00: AWS Certified Advanced Networking - Specialty

A company has an application running on Amazon EC2 instances in a private subnet that connects to a third-party service provider's public HTTP endpoint through a NAT gateway. As request rates increase, new connections are starting to fail. At the same time, the ErrorPortAllocation Amazon CloudWatch metric count for the NAT gateway is increasing. Which of the following actions should improve the connectivity issues? (Choose two.)

1. A. Allocate additional Elastic IP addresses to the NAT gateway.
2. B. Request that the third-party service provider implement HTTP keepalive.
3. C. Implement TCP keepalive on the client instances. — đáp án hiện tại
4. D. Create additional NAT gateways and update the private subnet route table to introduce the new NAT gateways. — đáp án hiện tại
5. E. Create additional NAT gateways in the public subnet and split client instances into multiple private subnets, each with a route to a different NAT gateway.