Q78 — AWS ANS-C01 Ch.1

Question 78 of 100 | ← Chapter 1

An online retail company is running a web application in the us-wast-2 Region and serves consumers in the United States. The company plans to Expand across several countries in Europe and wants to provide low latency for all its users. The application needs to identify the users’ IP addresses and provide localized content based on the users’ geographic location. The application Uses HTTP GET and POST methods for its functionality. The company also needs to develop a failover mechanism that works for GET and POST Methods and is based on health checks. The failover must occur in less than 1 minute for all clients. Which solution will meet these requirements?

• A. Configure a Network Load Balancer (NLB) for the application in each environment in the new AWS Regions. Create an AWS Global Accelerator accelerator that has endpoint groups that point to the NLBs in each Region.
• B. Configure an Application Load Balancer (ALB) for the application in each environment in the new AWS Regions. Create an AWS Global Accelerator accelerator that has endpoint groups that point to the ALBs in each Region. ✓
• C. Configure an Application Load Balancer (ALB) for the application in each environment in the new AWS Regions. Create Amazon Route 53 Public hosted zones that have failover routing policies.
• D. Configure a Network Load Balancer (NLB) for the application in each environment in the new AWS Regions. Create an Amazon CloudFront Distribution. Configure an origin group with origin failover options.

Correct Answer: B. Configure an Application Load Balancer (ALB) for the application in each environment in the new AWS Regions. Create an AWS Global Accelerator accelerator that has endpoint groups that point to the ALBs in each Region.

Explanation

AWS Global Accelerator与ALB结合使用，可满足低延迟需求。ALB能处理HTTP GET和POST请求，依据用户地理位置提供本地化内容，还可识别用户IP地址。Global Accelerator通过端点组与ALB集成，加速流量，保障全球低延迟与高可用性。其提供的基于健康检查的自动故障转移机制，能在1分钟内完成转移，确保服务持续可用，满足公司业务需求。