Cloud · Flashcard
Instances pull terabytes per month from S3 through a NAT gateway. What removes most of that charge?
- AA gateway VPC endpoint for S3, which keeps the traffic off the NAT gateway
- BA larger NAT gateway size, since per-GB processing falls at higher tiers
- CS3 Transfer Acceleration, which routes the traffic over the AWS backbone
- DMoving the bucket to another Region to qualify for lower transfer rates
Why this is the answer
NAT gateways bill per hour and per gigabyte processed, so routing S3 traffic through one is paying to reach a service that is already inside AWS; a gateway endpoint sends it via the VPC route table at no endpoint charge. NAT gateways have no size tiers, Transfer Acceleration is a paid upload optimisation, and moving the bucket to another Region introduces cross-Region transfer charges instead.
Official docsMore AWS Solutions Architect Associate (SAA-C03) flashcards
- Private-subnet instances must reach S3 without traversing the internet, at the lowest cost. Which endpoint type?
- Reporting queries are saturating an RDS primary in a Multi-AZ instance deployment. What actually helps?
- A three-tier web application runs in one Availability Zone. The business needs it to survive the loss of a zone, the reporting queries are saturating the database, and the budget will not stretch to a second Region. What is the smallest set of changes that meets all three?