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Exam AWS Certified Solutions Architect - Associate SAA-C03 topic 1 question 899 discussion

Exam question from Amazon's AWS Certified Solutions Architect - Associate SAA-C03
Question #: 899
Topic #: 1
[All AWS Certified Solutions Architect - Associate SAA-C03 Questions]

A company is migrating five on-premises applications to VPCs in the AWS Cloud. Each application is currently deployed in isolated virtual networks on premises and should be deployed similarly in the AWS Cloud. The applications need to reach a shared services VPC. All the applications must be able to communicate with each other.

If the migration is successful, the company will repeat the migration process for more than 100 applications.

Which solution will meet these requirements with the LEAST administrative overhead?

  • A. Deploy software VPN tunnels between the application VPCs and the shared services VPC. Add routes between the application VPCs in their subnets to the shared services VPC.
  • B. Deploy VPC peering connections between the application VPCs and the shared services VPC. Add routes between the application VPCs in their subnets to the shared services VPC through the peering connection.
  • C. Deploy an AWS Direct Connect connection between the application VPCs and the shared services VPAdd routes from the application VPCs in their subnets to the shared services VPC and the applications VPCs. Add routes from the shared services VPC subnets to the applications VPCs.
  • D. Deploy a transit gateway with associations between the transit gateway and the application VPCs and the shared services VPC. Add routes between the application VPCs in their subnets and the application VPCs to the shared services VPC through the transit gateway.
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Suggested Answer: D 🗳️
by Hkayne at May 9, 2024, 10:04 a.m.
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Scheldon
Highly Voted 10 months, 1 week ago
Selected Answer: D
Answer: D https://aws.amazon.com/transit-gateway/ Looks like the best solution would be transit gateway. It will allow for inter-VPC communication for all 5 applications/VPC, reach shared resource/VPC and in the future it will be easy to allow for inter-communication between even 100 VPCs (applications)
upvoted 5 times
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LeonSauveterre
Most Recent 2 months, 4 weeks ago
Selected Answer: D
A - VPN Tunnels: High administrative overhead. Requires individual tunnel setup and routing configuration for each VPC, making scaling to 100+ VPCs inefficient. B - VPC Peering: Moderate overhead. Requires manual peering for each pair of VPCs and routing configurations, which becomes harder to manage as more VPCs are added. C - Direct Connect: High cost and complexity. Direct Connect is typically used for hybrid cloud setups or data center connectivity but is costly and harder to manage at large scale. Not suitable for connecting numerous VPCs in the AWS Cloud. D - Transit Gateway: Lowest overhead. Acts as a centralized hub for managing inter-VPC communication and simplifies the process of routing between VPCs. It is highly scalable and reduces the complexity of adding new VPCs, and optimal for managing large-scale environments.
upvoted 1 times
LeonSauveterre
2 months, 4 weeks ago
I copied this from somewhere else for your references.
upvoted 1 times
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mk168898
5 months, 1 week ago
each application needs to be in their own VPC and can communicate with each other => transit gateway
upvoted 2 times
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muhammadahmer36
8 months, 2 weeks ago
Selected Answer: D
D. Deploy a transit gateway with associations between the transit gateway and the application VPCs and the shared services VPC. Add routes between the application VPCs in their subnets and the application VPCs to the shared services VPC through the transit gateway.
upvoted 2 times
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emakid
9 months ago
Selected Answer: D
AWS Transit Gateway: Centralized Connectivity: AWS Transit Gateway provides a hub-and-spoke model for connecting multiple VPCs, simplifying network management by providing a single point of connectivity for all VPCs. Scalability: It is designed to handle many VPCs, making it suitable for scaling beyond the initial five applications to more than 100 applications. Reduced Administrative Overhead: Managing VPC peering connections or VPN tunnels for each pair of VPCs would become complex and difficult to manage at scale. Transit Gateway simplifies this by providing centralized routing and connectivity.
upvoted 3 times
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DanielWuTRT
9 months, 1 week ago
Selected Answer: D
the LEAST administrative overhead = transit gateway
upvoted 2 times
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0bdf3af
10 months, 1 week ago
D. https://docs.aws.amazon.com/whitepapers/latest/building-scalable-secure-multi-vpc-network-infrastructure/transit-gateway.html
upvoted 3 times
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Hkayne
10 months, 3 weeks ago
Selected Answer: B
Correct answer is B
upvoted 1 times
dragossky
3 months, 1 week ago
not possible, vpc peerings can have up to 125 connections and the request is for 100 apps, meaning 100(100-1)/2 connections...
upvoted 1 times
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