Exam AWS Certified Solutions Architect - Associate SAA-C02 topic 1 question 352 discussion

A custom endpoint https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/Aurora.Overview.Endpoints.html#Aurora.Endpoints.Custom

This feature is intended for advanced users with specialized kinds of workloads where it isn't practical to keep all the Aurora Replicas in the cluster identical. With custom endpoints, you can predict the capacity of the DB instance used for each connection. When you use custom endpoints, you typically don't use the reader endpoint for that cluster. Answer is A.

A is the answer

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Answer is A

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A - the custom endpoint, will be able to identify which replica had the highest work load. And with report, the Solution Architect will do the needful to increase the capacity if require. https://aws.amazon.com/about-aws/whats-new/2018/11/amazon-aurora-simplifies-workload-management-with-custom-endpoints/#:~:text=A%20custom%20endpoint%20can%20then,helps%20spread%20the%20load%20around.

Answer is A

Custom endpoint for a different set of replica

The Reader Endpoint is generally not used after defining Custom Endpoints

https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/Aurora.Overview.Endpoints.html#Aurora.Endpoints.Custom

Three replicas differ in terms of memory and CPU, this direct us to a custom endpoint, Answer is A.

Cluster endpoint – Connects you to the primary instance and automatically follows the primary instance in case of failover, that is, when the current primary instance is demoted and one of the Aurora Replicas is promoted in its place. • Reader endpoint – Includes all Aurora Replicas in the DB cluster under a single DNS CNAME. You can use the reader endpoint to implement DNS round robin load balancing for read-only connections. • Instance endpoint – Each instance in the DB cluster has its own individual endpoint. You can use this endpoint to connect directly to a specific instance. • Custom endpoints – User-defined DNS endpoints containing a selected group of instances from a given cluster - (Correct Answer A)

answer is A. Aurora uses single reader endpoint for all replica nodes. We can create new custom endpoints for our workloads. So, 3 nodes can share the same custom endpoint and serve the reports. B is out because 3' node cluster clone' does not make sense C-this happens in 'RDS 'where instance endpoints exist and application needs to be updated with connection string D-this would effectively mean using the same endpoint shared by all 6 replica nodes

A Reference: https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/Aurora.Overview.Endpoints.html#Aurora.Overview.Endpoints.Types

yes , C," different compute and memory specification from the rest of the DB cluster",key words different specification must be A.

The answer is A.