AWS Certified Advanced Networking – Specialty (ANS-C01) — Question 120
A company has business operations in the United States and in Europe. The company's public applications are running on AWS and use three transit gateways. The transit gateways are located in the us-west-2, us-east-1, and eu-central-1 Regions. All the transit gateways are connected to each other in a full mesh configuration.
The company accidentally removes the route to the eu-central-1 VPCs from the us-west-2 transit gateway route table. The company also accidentally removes the route to the us-west-2 VPCs from the eu-central-1 transit gateway route table.
How can a network engineer identify the misconfiguration with the LEAST operational overhead?
Answer options
- A. Use the Route Analyzer feature for AWS Transit Gateway Network Manager.
- B. Use the AWSSupport-SetupIPMonitoringFromVPC AWS Systems Manager Automation runbook. Push network telemetry data to Amazon CloudWatch Logs for analysis.
- C. Use VPC flow logs in eu-central-1 and us-west-2 to analyze the missing routes.
- D. Use Amazon VPC Traffic Mirroring in eu-central-1 or us-west-2 to take packet captures and troubleshoot the connectivity issues.
Correct answer: A
Explanation
The correct answer is A because the Route Analyzer feature in AWS Transit Gateway Network Manager allows for a straightforward and efficient analysis of route configurations across multiple transit gateways, minimizing operational overhead. The other options, while potentially useful, involve more complex setups or additional analysis steps that would require more effort and time to identify the misconfiguration.