Exam AWS Certified Solutions Architect - Associate SAA-C02 topic 1 question 447 discussion

a. vpc shareing is ideal for different account but same organization. it is cost optimized

Yeah, it looks like VPC Sharing is the cost-effective approach. VPC sharing allows multiple AWS accounts to create their application resources, such as Amazon EC2 instances, Amazon Relational Database Service (RDS) databases, Amazon Redshift clusters, and AWS Lambda functions, into shared, centrally-managed virtual private clouds (VPCs). In this model, the account that owns the VPC (owner) shares one or more subnets with other accounts (participants) that belong to the same organization from AWS Organizations.

A is the answer

C is correct for given reference within answer section In this article, we would start with a working AWS Redshift cluster and it’s assumed that you already have the required data in the cluster that is required to be shared with a different AWS account.

in the real world I use a datashare in redshift. in the exam , I don't know what the answer it is.

Answer is C, but this is an old question and there is a better way to do it now: https://aws.amazon.com/blogs/aws/cross-account-data-sharing-for-amazon-redshift/

VPC sharing - Accounts in same organization

A is the correct answer https://docs.aws.amazon.com/vpc/latest/userguide/vpc-sharing.html#:~:text=VPC%20sharing%20allows%20multiple%20AWS%20accounts%20to%20create%20their%20application%20resources%2C%20such%20as%20Amazon%20EC2%20instances%2C%20Amazon%20Relational%20Database%20Service%20(RDS)%20databases%2C%20Amazon%20Redshift%20clusters%2C%20and%20AWS%20Lambda%20functions%2C%20into%20shared%2C%20centrally%2Dmanaged%20virtual%20private%20clouds%20(VPCs)

A IS COST EFFECTIVE

VPC Sharing currently does not allow Redshift as a option to share via Resource Access Manager (RAM)..you can login to AWS console and check yourself. Amen!

Answer:A Question is asking for sharing access to the cluster itself not the data or its snapshot. all just provide oneoff copy of the data but A - A provides access to the cluster itself

https://www.sqlshack.com/share-aws-redshift-data-across-accounts/ In this article, we learned how to configure AWS Redshift snapshots, configure it to provision access to other accounts, and used the shared snapshots to restore an Amazon Redshift cluster.

most cost effective

This is an old question. But it wasn't ever A.

The question mentioned about MOST cost-effective way. Then I'll go with A

C is correct

Answer is C One of the standard methods followed to transfer data across AWS Redshift clusters within as well as across AWS accounts is by creating snapshots of the cluster and then restoring this snapshot in the cluster of choice. In this article, we will learn a mechanism to address this scenario by using AWS Redshift database snapshots, sharing it with the desired accounts and restoring the same into an Amazon Redshift cluster. https://www.sqlshack.com/share-aws-redshift-data-across-accounts/