Exam AWS Certified Solutions Architect - Associate SAA-C02 topic 1 question 442 discussion

Exam question from Amazon's AWS Certified Solutions Architect - Associate SAA-C02

Question #: 442
Topic #: 1

[All AWS Certified Solutions Architect - Associate SAA-C02 Questions]

A company has two VPCs that are located in the us-west-2 Region within the same AWS account. The company needs to allow network traffic between these
VPCs. Approximately 500 GB of data transfer will occur between the VPCs each month.
What is the MOST cost-effective solution to connect these VPCs?

A. Implement AWS Transit Gateway to connect the VPCs. Update the route tables of each VPC to use the transit gateway for inter-VPC communication.
B. Implement an AWS Site-to-Site VPN tunnel between the VPCs. Update the route tables of each VPC to use the VPN tunnel for inter-VPC communication.
C. Set up a VPC peering connection between the VPCs. Update the route tables of each VPC to use the VPC peering connection for inter-VPC communication.
D. Set up a 1 GB AWS Direct Connect connection between the VPCs. Update the route tables of each VPC to use the Direct Connect connection for inter-VPC communication.

Show Suggested Answer

Suggested Answer: C 🗳️

by dumdumex at May 31, 2021, 6:05 a.m.

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corlu

Highly Voted 3 years, 9 months ago

I agree with C. https://docs.aws.amazon.com/whitepapers/latest/building-scalable-secure-multi-vpc-network-infrastructure/transit-gateway-vs-vpc-peering.html Lower cost — With VPC peering you only pay for data transfer charges. Transit Gateway has an hourly charge per attachment in addition to the data transfer fees.

upvoted 49 times

Rajjay

3 years, 8 months ago

To support the point above: https://www.google.com/search?q=which+is+cheaper-+Vpc+peering+or++vpc+transit+gateway&sxsrf=AOaemvItPrICl2RfeUOBRWuhILEbndjvzg%3A1636894080081&ei=gAWRYaGtBLOdwbkPqLSc0Aw&oq=which+is+cheaper-+Vpc+peering+or++vpc+transit+gateway&gs_lcp=Cgdnd3Mtd2l6EAMyBQgAEM0CMgUIABDNAjIFCAAQzQIyBQgAEM0COgYIABAHEB46CAgAEAgQBxAeOgoIABAIEAcQChAeOgUIABCGAzoECCEQCkoECEEYAFAAWIdtYKlxaAJwAngAgAFJiAHEEJIBAjM1mAEAoAEBwAEB&sclient=gws-wiz&ved=0ahUKEwih7bXR8Zf0AhWzTjABHSgaB8oQ4dUDCA8&uact=5

upvoted 3 times

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kaylaychy

Highly Voted 3 years, 10 months ago

Answer should be C. The question did not mention Data center, so there is no need for a Direct connect connection. A VPC peering should be enough. Kindly correct me if I am wrong

upvoted 11 times

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