Your company is planning to deploy EC2 Instances across multiple regions. These instances will make calls to the Simple Storage service. You are trying to understand the data transfer costs which are incurred in such an implementation. Which of the following is not charged by AWS?

Answer options:

A.From an Elastic Compute Cloud (Amazon EC2) in eu-west-1 to Amazon Simple Storage Service (Amazon S3) in us-east-1
B.From your on-premises data center to Amazon S3 in us-east-1
C.From Amazon EC2 in eu-west-1 to your on-premises data center
D.From Amazon S3 in us-east-1 to Amazon EC2 in eu-west-1

Answer - B
All data transfer into AWS via the Internet is not charged.
The AWS Documentation mentions the following on data transfer rates.
Billing prices are based on the location of your bucket. There is no Data Transfer charge for data transferred within an Amazon S3 Region via a COPY request. Data transferred via a COPY request between AWS Regions is charged at rates specified in the pricing section of the Amazon S3 detail page. There is no Data Transfer charge for data transferred between Amazon EC2 and Amazon S3 within the same region, for example, data transferred within the US East (Northern Virginia) Region. However, data transferred between Amazon EC2 and Amazon S3 across all other regions is charged at rates specified on the Amazon S3 pricing page, for example, data transferred between Amazon EC2 US East (Northern Virginia) and Amazon S3 US West (Northern California).
Options A, C and D are all invalid because all of the options will incur data charges.
For more information on S3 pricing, please visit the below URL:
https://aws.amazon.com/s3/pricing/
For more information on EC2 pricing, please visit the below URL:
https://aws.amazon.com/ec2/pricing/