SAA-C03 Question 518
Select 2A company is designing a network architecture for a new web application hosted in AWS. The application will serve a global user base and requires high availability and low latency. Additionally, the company wants to minimize data transfer costs while ensuring secure communication between the application and users. Which combination of design choices will achieve these requirements?
- A
Use Amazon CloudFront with an S3 bucket as the origin to cache content closer to users.
- B
Deploy the application in a single Availability Zone to reduce operational costs.
- C
Enable AWS Direct Connect for all users to access the application securely.
- D
Use AWS Global Accelerator to optimize routing and improve latency for global users.
- E
Implement VPC endpoints for secure data transfer between application components.
Show answer and explanation
Correct answers: A, D
Explanation
To design a cost-optimized network architecture for a global application, Amazon CloudFront helps reduce latency and data transfer costs by caching content at edge locations closer to users. AWS Global Accelerator ensures low latency and high availability by routing traffic to the optimal endpoints. These solutions together achieve the requirements of high availability, low latency, and cost optimization for the global user base.
- A. Correct.
Using Amazon CloudFront with an S3 bucket as the origin reduces latency by caching content at edge locations closer to users. It also minimizes data transfer costs due to CloudFront's reduced data transfer pricing.
- B. Incorrect.
Deploying the application in a single Availability Zone does reduce costs, but it compromises high availability. For a global application, high availability is critical and requires using multiple Availability Zones or regions.
- C. Incorrect.
AWS Direct Connect provides a dedicated network connection, but it is costly and not a cost-effective solution for serving a global user base. It is more suited for hybrid architectures where on-premises data centers need to connect to AWS.
- D. Correct.
AWS Global Accelerator improves latency by routing traffic to the optimal AWS endpoint for users worldwide. It also enhances availability and performance, making it a suitable choice for global applications.
- E. Incorrect.
VPC endpoints are used for secure communication within a VPC, but they do not address latency or data transfer costs for a global user base.