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Question 234 - SAP-C02 discussion

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A company's solutions architect is analyzing costs of a multi-application environment. The environment is deployed across multiple Availability Zones in a single AWS Region. After a recent acquisition, the company manages two organizations in AWS Organizations. The company has created multiple service provider applications as AWS PrivateLink-powered VPC endpoint services in one organization. The company has created multiple service consumer applications in the other organization.

Data transfer charges are much higher than the company expected, and the solutions architect needs to reduce the costs. The solutions architect must recommend guidelines for developers to follow when they deploy services. These guidelines must minimize data transfer charges for the whole environment.

Which guidelines meet these requirements? (Select TWO.)

A.
Use AWS Resource Access Manager to share the subnets that host the service provider applications with other accounts in the organization.
Answers
A.
Use AWS Resource Access Manager to share the subnets that host the service provider applications with other accounts in the organization.
B.
Place the service provider applications and the service consumer applications in AWS accounts in the same organization.
Answers
B.
Place the service provider applications and the service consumer applications in AWS accounts in the same organization.
C.
Turn off cross-zone load balancing for the Network Load Balancer in all service provider application deployments.
Answers
C.
Turn off cross-zone load balancing for the Network Load Balancer in all service provider application deployments.
D.
Ensure that service consumer compute resources use the Availability Zone-specific endpoint service by using the endpoint's local DNS name.
Answers
D.
Ensure that service consumer compute resources use the Availability Zone-specific endpoint service by using the endpoint's local DNS name.
E.
Create a Savings Plan that provides adequate coverage for the organization's planned inter-Availability Zone data transfer usage.
Answers
E.
Create a Savings Plan that provides adequate coverage for the organization's planned inter-Availability Zone data transfer usage.
Suggested answer: C, D

Explanation:

Cross-zone load balancing enables traffic to be distributed evenly across all registered instances in all enabled Availability Zones. However, this also increases data transfer charges between Availability Zones. By turning off cross-zone load balancing, the service provider applications can reduce inter-Availability Zone data transfer costs. Similarly, by using the Availability Zone-specific endpoint service, the service consumer applications can ensure that they connect to the nearest service provider application in the same Availability Zone, avoiding cross-Availability Zone data transfer charges.

Reference:

https://docs.aws.amazon.com/elasticloadbalancing/latest/network/load-balancer-target-groups.html#cross-zone-load-balancing

https://docs.aws.amazon.com/vpc/latest/userguide/vpce-interface.html#vpce-interface-dns

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asked 16/09/2024
Nathan Phelan
48 questions
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