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ANS-C01 · Question #91

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…

The correct answer is C. Implement TCP keepalive on the client instances. E. Create additional NAT gateways in the public subnet and split client instances into multiple private. https://aws.amazon.com/premiumsupport/knowledge-center/vpc-resolve-port-allocation-errors/ Limit the number of connections that clients can make to a single destination. Keeplive reduce the number of new connection establish.

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Question

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.)

Options

  • AAllocate additional elastic IP addresses to the NAT gateway.
  • BRequest that the third-party service provider implement HTTP keepalive.
  • CImplement TCP keepalive on the client instances.
  • DCreate additional NAT gateways and update the private subnet route table to introduce the new
  • ECreate additional NAT gateways in the public subnet and split client instances into multiple private

How the community answered

(30 responses)
  • A
    7% (2)
  • B
    13% (4)
  • C
    57% (17)
  • D
    23% (7)

Explanation

https://aws.amazon.com/premiumsupport/knowledge-center/vpc-resolve-port-allocation-errors/ Limit the number of connections that clients can make to a single destination. Keeplive reduce the number of new connection establish.

Topics

#AWS NAT Gateway#Network Troubleshooting#CloudWatch Metrics#Network Scaling

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