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Home Forums AWS AWS Certified DevOps Engineer Professional Please explain “route table to allow Route 53 to send requests” part Reply To: Please explain “route table to allow Route 53 to send requests” part

  • Nikee-TutorialsDojo

    Administrator
    February 3, 2025 at 9:16 am

    Hello Viktor,

    Thank you for your question! In the context of Route 53 health checks, it’s essential to understand the role of both the network access control list (NACL) and the route table when setting up DNS failover.

    The reason why option 3 is correct is that Amazon Route 53 needs to send health check requests to the endpoints you specify in your configuration. To do this, the route table must be properly configured to ensure that Route 53 can reach those endpoints. Specifically, if the health check endpoints are in a Virtual Private Cloud (VPC) or any other network segment, the route table must include the correct routes that allow traffic to reach the appropriate IP addresses or resources. Without these correct routes, Route 53 wouldn’t be able to perform the health checks and determine whether the endpoints are healthy or not.

    In addition to the route table, the network access control list (NACL) plays a critical role in controlling the flow of traffic to and from your endpoints. You need to ensure that the NACLs allow the appropriate inbound and outbound traffic for health check requests, otherwise, Route 53 will not be able to verify the health status of your endpoints, which could affect the failover process.

    By configuring both the route table and the NACL, you’re making sure that Route 53 has the proper network access to perform health checks and automatically failover to a secondary endpoint if necessary, thus fulfilling the requirement for automatic DNS failover in the event of an outage or service degradation.

    I hope this helps clarify the reasoning behind the correct answer! If you have any more questions, feel free to ask.

    Regards,

    Nikee @ Tutorials Dojo

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