Practice Test

True or False: Data transfer costs refer to the expense of moving data from one physical location to another within an AWS environment.

Answer: True

Explanation: Data transfer costs in the AWS environment refer to expenses associated with moving data between different services, regions or availability zones.

Which of the following would incur data transfer costs in AWS?

  • A. Transferring data between two S3 buckets in the same region
  • B. Transferring data from an EC2 instance to an S3 bucket in the same region
  • C. Transferring data from an EC2 instance in one region to an S3 bucket in another region
  • D. Transferring data within an Amazon S3 bucket located in the same region

Answer: C

Explanation: Data transfers within the same region do not generally incur data transfer costs. However, transferring data between regions will incur costs.

True or False: Data transfer out of AWS is generally more expensive than data transfer in.

Answer: True

Explanation: AWS usually charges for outbound data transfer but does not charge for incoming data transfer or data transfer within the same region.

Which of the following is not a key factor that affects the cost of data transfers in AWS?

  • A. The volume of data being transferred
  • B. The distance between the source and destination of the data transfer
  • C. The speed of the data transfer
  • D. Whether the transfer is inbound or outbound

Answer: C

Explanation: The speed of the data transfer does not impact the cost in AWS. However, the volume and distance of data transfer as well as direction (inbound or outbound) can affect the cost.

Data transfer within the same AWS region incurs a charge.

Answer: False

Explanation: Data transfers within the same AWS region do not generally incur costs.

True or False: Transferring data between AWS services in different regions always incurs data transfer fees.

Answer: True

Explanation: As per AWS’s pricing model, transferring data between services located in different regions does incur data transfer fees.

In AWS, incoming data transfer costs refer to the charges associated with moving data:

  • A. From one AWS Region to another
  • B. From a non-AWS location into AWS
  • C. Within the same Region
  • D. From AWS to a non-AWS location

Answer: B

Explanation: Incoming or inbound data transfer refers to the process of moving data from a location outside of AWS into AWS.

AWS charges data transfer costs on a per GB basis.

Answer: True

Explanation: AWS data transfer costs are generally levied based on the data volume, charged on a per GB basis.

Which of the following does not incur data transfer charges in AWS?

  • A. Data transferred in from the internet
  • B. Data transferred out to the internet
  • C. Data transferred between AWS regions
  • D. Data transferred within an AWS region

Answer: A

Explanation: AWS does not charge for inbound data transfer or for data transferred within a region.

With reference to AWS, users have to pay for data transfer within an Availability Zone.

Answer: False

Explanation: Data transfer within an AWS Availability Zone does not incur any cost. AWS charges for data transfer between different Availability Zones within the same region.

Interview Questions

What is incoming data transfer cost in AWS?

Incoming data transfer cost in AWS refers to the costs associated with transferring data into an AWS region from another region or from the internet.

How does AWS charge for outgoing data transfer within the same region?

AWS does not charge for data transfer between services within the same region provided they use a private IP address.

How does AWS charge for the incoming data transfer from the internet to an AWS region?

As of AWS’s current pricing model, all data transfers into AWS are free of charge. This includes incoming data transfers from the internet to an AWS Region.

What are Inter-Region data transfer costs in AWS?

Inter-Region data transfer costs apply when data is transferred between AWS regions. The data transfer is charged on both sides; when the data leaves one region and when it arrives in the other region.

What is the cost for data transfer between Amazon EC2 and Amazon S3 in the same region?

If the traffic stays within the same region, meaning for Amazon EC2 and Amazon S3 transfer, there are no data transfer costs.

How much does AWS charge for data transfer out from EC2 instances to the internet?

AWS charges a fee for data transferred out from EC2 instances to the Internet. The rate varies based on the total amount of data transferred out per month.

Do I get charged for the data transfer between services within the same Availability Zone?

No. In AWS, data transfer between services within the same Availability Zone is free.

Do AWS charge for the data transferred between different AWS accounts in the same region?

Yes, data transfer between different AWS accounts in the same region is treated as data transfer out, and thus has associated costs.

Does AWS charge for data transfer between EC2 and RDS in the same region?

No, data transfer between Amazon EC2 and Amazon RDS within the same region is free of cost.

What is the cost of data transfer out from Amazon S3 to the internet?

The cost of data transfer out from Amazon S3 to the internet varies based on the total volume of data transferred out.

Are data transfers between regions charged by AWS?

Yes, data transfers between AWS regions are charged on both sides, outgoing from one region, and incoming to another.

If I have replicated data across multiple regions, will I be charged for data transfer?

Yes, inter-region data transfer costs apply when you replicate data across multiple AWS regions.

How can I minimize data transfer costs in AWS?

You can minimize data transfer costs by attempting to keep your data and the services that access that data within the same region and availability zone where possible.

How is the data transfer between Amazon EC2 and Amazon Glacier charged?

Data transfer INTO Amazon EC2 from Amazon Glacier within the same region is free of charge. Data transfer OUT of Amazon EC2 to Amazon Glacier within the same region is also free of charge. However, data transfer between different regions has associated costs.

Does AWS charge for data transfer between EC2 instances in a peered VPCs in the same region?

No, AWS does not charge for the transfer of data between two EC2 instances in peered VPCs within the same region.

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