Q79 — AWS ANS-C01 Ch.1

Question 79 of 100 | ← Chapter 1

A company is developing an application in which IoT devices will report measurements to the AWS Cloud. The application will have millions of end users. The company observes that the IoT devices cannot support DNS resolution. The company needs to implement an Amazon EC2 Auto Scaling solution so that the IoT devices can connect to an application endpoint without using DNS. Which solution will meet these requirements MOST cost-effectively?

• A. Use an Application Load Balancer (ALB)-type target group for a Network Load Balancer (NLB). Create an EC2 Auto Scaling group. Attach the Auto Scaling group to the ALB. Set up the IoT devices to connect to the IP addresses of the NLB.
• B. Use an AWS Global Accelerator accelerator with an Application Load Balancer (ALB) endpoint. Create an EC2 Auto Scaling group. Attach the Auto Scaling group to the ALB, Set up the IoT devices to connect to the IP addresses of the accelerator.
• C. Use a Network Load Balancer (NLB). Create an EC2 Auto Scaling group. Attach the Auto Scaling group to the NLB. Set up the IoT devices to connect to the IP addresses of the NLB. ✓
• D. Use an AWS Global Accelerator accelerator with a Network Load Balancer (NLB) endpoint. Create an EC2 Auto Scaling group. Attach the Auto Scaling group to the NLB. Set up the IoT devices to connect to the IP addresses of the accelerator.

Correct Answer: C. Use a Network Load Balancer (NLB). Create an EC2 Auto Scaling group. Attach the Auto Scaling group to the NLB. Set up the IoT devices to connect to the IP addresses of the NLB.

Explanation

答案C是最符合成本效益的解决方案。因为对于IoT设备不支持DNS解析的情况，使用NetworkLoadBalancer(NLB)可以直接处理基于IP的流量，无需依赖DNS。创建EC2AutoScaling组并将其附加到NLB上，然后让IoT设备直接连接到NLB的IP地址，这种方式简单直接，能够有效地满足需求，并且相对其他选项在成本和实现复杂度上更具优势。 查看全部