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Exam AWS Certified Advanced Networking - Specialty ANS-C01 All Questions

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Exam AWS Certified Advanced Networking - Specialty ANS-C01 topic 1 question 151 discussion

Exam question from Amazon's AWS Certified Advanced Networking - Specialty ANS-C01
Question #: 151
Topic #: 1
[All AWS Certified Advanced Networking - Specialty ANS-C01 Questions]

A company is using a shared services VPC with two domain controllers. The domain controllers are deployed in the company's private subnets. The company is deploying a new application into a new VPC in the account. The application will be deployed onto an Amazon EC2 for Windows Server instance in the new VPC. The instance must join the existing Windows domain that is supported by the domain controllers in the shared services VPC.

A transit gateway is attached to both the shared services VPC and the new VPC. The company has updated the route tables for the transit gateway, the shared services VPC, and the new VPC. The security groups for the domain controllers and the instance are updated and allow traffic only on the ports that are necessary for domain operations. The instance is unable to join the domain that is hosted on the domain controllers.

Which combination of actions will help identify the cause of this issue with the LEAST operational overhead? (Choose two.)

  • A. Use AWS Network Manager to perform a route analysis for the transit gateway network. Specify the existing EC2 instance as the source. Specify the first domain controller as the destination. Repeat the route analysis for the second domain controller.
  • B. Use port mirroring with the existing EC2 instance as the source and another EC2 instance as the target to obtain packet captures of the connection attempts.
  • C. Review the VPC flow logs on the shared services VPC and the new VPC.
  • D. Issue a ping command from one of the domain controllers to the existing EC2 instance.
  • E. Ensure that route propagation is turned off on the shared services VPC.
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Suggested Answer: AC 🗳️
by Manh at July 27, 2023, 8:59 a.m.
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Manh
Highly Voted 1 year, 3 months ago
Selected Answer: AC
To identify the cause of this issue with the least operational overhead, you can use AWS Network Manager to perform a route analysis for the transit gateway network. You can specify the existing EC2 instance as the source and one of the domain controllers as the destination. You can repeat the route analysis for the second domain controller. This will help you verify if there is any routing issue between the EC2 instance and the domain controllers through the transit gateway. You can also review the VPC flow logs on the shared services VPC and the new VPC. VPC flow logs capture information about accepted and rejected IP traffic in your VPCs. You can use VPC flow logs to troubleshoot connectivity issues or monitor network traffic in your VPCs. You can view VPC flow logs in Amazon CloudWatch Logs or Amazon S3.
upvoted 10 times
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Marfee400704
Most Recent 9 months ago
I think that it's correct answer is AC according to SPOTO products.
upvoted 1 times
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