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SAA-C03 · Question #778

A company runs a non-production Oracle database on an Amazon EC2 instance. The database contains 1 TB of data. The EC2 instance runs in a private subnet of a VPC. A backup of the EC2 instance is…

The correct answer is A. Create a gateway endpoint for Amazon S3 in the VPC. Update the route tables. An S3 gateway endpoint allows EC2 instances in a private subnet to access Amazon S3 directly over the AWS network without using public IP addresses or a NAT gateway. This solution is cost- effective because it avoids NAT gateway data transfer charges and provides secure…

Submitted by diego_uy· Mar 4, 2026Design Cost-Optimized Architectures

Question

A company runs a non-production Oracle database on an Amazon EC2 instance. The database contains 1 TB of data. The EC2 instance runs in a private subnet of a VPC. A backup of the EC2 instance is taken every day and uploaded to an Amazon S3 bucket. The current backup process uses a NAT gateway to access the S3 bucket. The company does not want the backup process to use public IP addresses. Which solution will meet this requirement MOST cost-effectively?

Options

  • ACreate a gateway endpoint for Amazon S3 in the VPC. Update the route tables.
  • BEnable S3 Transfer Acceleration on the S3 bucket. Compress the backup files and use multipart
  • CCreate an Amazon CloudFront distribution, and set the S3 bucket as the origin. Upload the
  • DUse a third-party tool to mount the S3 bucket as a file share on the EC2 instance operating

How the community answered

(29 responses)
  • A
    90% (26)
  • B
    3% (1)
  • C
    7% (2)

Explanation

An S3 gateway endpoint allows EC2 instances in a private subnet to access Amazon S3 directly over the AWS network without using public IP addresses or a NAT gateway. This solution is cost- effective because it avoids NAT gateway data transfer charges and provides secure, private connectivity to S3.

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