Exam AWS Certified Solutions Architect - Professional SAP-C02 topic 1 question 283 discussion

You can use two types of VPC endpoints to access Amazon S3: gateway endpoints and interface endpoints (by using AWS PrivateLink). A gateway endpoint is a gateway that you specify in your route table to access Amazon S3 from your VPC over the AWS network. Interface endpoints extend the functionality of gateway endpoints by using private IP addresses to route requests to Amazon S3 from within your VPC, on premises, or from a VPC in another AWS Region by using VPC peering or AWS Transit Gateway.

AC: "The company must send the data privately" = Interface endpoints Gateway endpoints, do not allow access from on premises.

Why not A and D: "Currently, gateway VPC endpoints for Amazon S3 do not support accessing resources in a different Region, in a different VPC, or from an on-premises data center (environment outside of AWS)."

A, C for sure. Interface endpoints extend the functionality of gateway endpoints by using private IP addresses to route requests to Amazon S3 from within your VPC, on premises, or from a VPC in another AWS Region by using VPC peering or AWS Transit Gateway.

Really, really awful question. Agree that the answer they're looking for is AC. However, technically, this element of B if done in isolation will also work and might actually be better: "Set up an AWS Direct Connect connection with a public VIF between the on-premises environment and the private VPC". Just because you're accessing S3 using its public IPs, doesn't mean you're routing over the "public internet". Plus, accessing S3 via its regular public prefixes means no mucking around with `--endpoint-url https://bucket.vpce-1a2b3c4d-5e6f.s3.us-east-1.vpce.amazonaws.com` command line options. Your devs can just use S3 normally with normal DNS hostnames. If they forget then the traffic will route via the internet - oops. So B+anything-else is technically also correct, and arguably preferable.

A. Establish a networking account in the AWS Cloud. Create a private VPC in the networking account. Set up an AWS Direct Connect connection with a private VIF between the on-premises environment and the private VPC. This creates a dedicated, private connection between the on-premises systems and the AWS VPC, ensuring data remains secure and isolated from the public internet. The private VIF further enhances security by preventing access to the S3 buckets from the public internet. E. Establish a networking account in the AWS Cloud. Create a private VPC in the networking account. Peer VPCs from the accounts that host the S3 buckets with the VPC in the network account. This establishes connectivity between the private VPC and the VPCs containing the S3 buckets, enabling private data transfer without crossing the public internet. Peering allows resources in both VPCs to communicate directly, maintaining data security and privacy.

S3 Gateway endpoint is for access inside VPC and not from on-premise.

C: needs to be an endpoint E: Company does NOT have a dedicated network connection so DX answers are out, so peer the VPC's.

AC - DX+Interface endpoint. Both gateway and interface endpoints will use aws backbone, so not internet. However, you cannot access a GW endpoint from onprem. Therefore needs interface (ENIs) endpoints.

Correct AC.

AC of course. see links below

AC - links provided by other members provide very good explanation.

AC - detailed steps under use case 2 -> https://repost.aws/knowledge-center/s3-bucket-access-direct-connect

Endpoint comparison: https://docs.aws.amazon.com/AmazonS3/latest/userguide/privatelink-interface-endpoints.html#types-of-vpc-endpoints-for-s3

AC - Access from on-prem is using S3 Interface Endpoint + Private VIF. https://aws.amazon.com/blogs/networking-and-content-delivery/secure-hybrid-access-to-amazon-s3-using-aws-privatelink/

Seems AC

Amazon S3: interface VPC endpoint and gateway VPC endpoint. Difference : When you configure an interface VPC endpoint, an elastic network interface (ENI) with a private IP address is deployed in your subnet. An Amazon EC2 instance in the VPC can communicate with an Amazon S3 bucket through the ENI and AWS network. Using the interface endpoint, applications in your on-premises data center can easily query S3 buckets over AWS Direct Connect or Site-to-Site VPN. Interface endpoint supports a growing list of AWS services. Consult our documentation to find AWS services compatible with interface endpoints powered by AWS PrivateLink.