AWS认证SAA-C03每日一题

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【SAA-C03助理级解决方案架构师认证】

A global company hosts its web application on Amazon EC2 instances behind an Application Load Balancer (ALB).The web application has static data and dynamic data. The company stores its static data in an Amazon S3 bucket The company wants to improve performance and reduce latency for the static data and dynamic data. The company is using its own domain name registered with Amazon Route 53.What should a solutions architect do to meet these requirements?
A :   Create an Amazon CloudFront distribution  that has the S3 bucket and theALB as origins. Configure Route 53to route traffic to the CloudFront distribution.
B :   Create an Amazon CloudFront distribution that has the ALB as an origin. Create an AWS Global Accelerator standard accelerator that has the S3 bucket as an endpoint Configure Route 53to route traffic to the CloudFront distribution.
C :   Create an Amazon CloudFront distribution that has the S3 bucket as an origin. Create an AWS Global Accelerator standard accelerator that has the ALB and the CloudFront distribution as endpoints.Create a custom domain name that points to the accelerator DNS name. Use the custom domain name as an endpoint for the web application.
D :   Create an Amazon CloudFront distribution that has the ALB as an origin. Create an AWS Global Accelerator standard accelerator that has the S3 bucket as an endpoint Create two domain names.
Point one domain name to the CloudFront DNS name for dynamic content. Point the other domain name to the accelerator DNS name for static content. Use the domain names as endpoints for the web application.
正确答案   A
Answer is A
Explanation - AWS Global Accelerator vs CloudFront
.They both use the AWS global network and its edge locations around the world
.Both services integrate with AWS Shield for DDoS protection.·CloudFront
·Improves performance for both cacheable content (such as images and videos)
·Dynamic content (such as API acceleration and dynamic site delivery)
.Content is served at the edge·Global Accelerator
.Improves performance for a wide range of applications over TCP or UDP
·Proxying packets at the edge to applications running in one or more AWS Regions.
·Good fit for non-HTTP use cases, such as gaming (UDP), loT (MQTT), or Voice over IP
·Good for HTTP use cases that require static IP addresses
.Good for HTTP use cases that required deterministic, fast regional failover