SAP-C02 第 169 题
题目
A company is running a critical stateful web application on two Linux Amazon EC2 instances behind an Application Load Balancer (ALB) with an Amazon RDS for MySQL database. The company hosts the DNS records for the application in Amazon Route 53. A solutions architect must recommend a solution to improve the resiliency of the application. The solution must meet the following objectives: • Application tier: RPO of 2 minutes. RTO of 30 minutes • Database tier: RPO of 5 minutes. RTO of 30 minutes The company does not want to make significant changes to the existing application architecture. The company must ensure optimal latency after a failover. Which solution will meet these requirements?
中文翻译:
一家公司正在应用程序负载均衡器 (ALB) 后面的两个 Linux Amazon EC2 实例上运行一个关键的有状态 Web 应用程序,其中包含 Amazon RDS for MySQL 数据库。该公司在 Amazon Route 53 中托管应用程序的 DNS 记录。解决方案架构师必须推荐一种解决方案来提高应用程序的弹性。该解决方案必须满足以下目标: • 应用程序层:RPO 为2 分钟。 RTO 为30 分钟 • 数据库层:RPO 为5 分钟。 RTO 为 30 分钟 该公司不想对现有应用程序架构进行重大更改。公司必须确保故障转移后的最佳延迟。哪种解决方案可以满足这些要求?
选项
A. Configure the EC2 instances to use AWS Elastic Disaster Recovery. Create a cross-Region read replica for the RDS DB instance. Create an ALB in a second AWS Region. Create an AWS Global Accelerator endpoint, and associate the endpoint with the ALBs. Update DNS records to point to the Global Accelerator endpoint.
中文翻译:
配置 EC2 实例以使用 AWS Elastic Disaster Recovery。为RDS数据库实例创建跨区域只读副本。在第二个 AWS 区域中创建 ALB。创建 AWS Global Accelerator 终端节点,并将该终端节点与 ALB 关联。更新 DNS 记录以指向 Global Accelerator 端点。
B. Configure the EC2 instances to use Amazon Data Lifecycle Manager (Amazon DLM) to take snapshots of the EBS volumes. Configure RDS automated backups. Configure backup replication to a second AWS Region. Create an ALB in the second Region. Create an AWS Global Accelerator endpoint, and associate the endpoint with the ALBs. Update DNS records to point to the Global Accelerator endpoint.
中文翻译:
配置 EC2 实例以使用 Amazon Data Lifecycle Manager (Amazon DLM) 拍摄 EBS 卷的快照。配置 RDS 自动备份。配置到第二个 AWS 区域的备份复制。在第二个区域中创建 ALB。创建 AWS Global Accelerator 终端节点,并将该终端节点与 ALB 关联。更新 DNS 记录以指向 Global Accelerator 端点。
C. Create a backup plan in AWS Backup for the EC2 instances and RDS DB instance. Configure backup replication to a second AWS Region. Create an ALB in the second Region. Configure an Amazon CloudFront distribution in front of the ALB. Update DNS records to point to CloudFront.
中文翻译:
在 AWS Backup 中为 EC2 实例和 RDS 数据库实例创建备份计划。配置到第二个 AWS 区域的备份复制。在第二个区域中创建 ALB。在 ALB 前面配置 Amazon CloudFront 分配。更新 DNS 记录以指向 CloudFront。
D. Configure the EC2 instances to use Amazon Data Lifecycle Manager (Amazon DLM) to take snapshots of the EBS volumes. Create a cross-Region read replica for the RDS DB instance. Create an ALB in a second AWS Region. Create an AWS Global Accelerator endpoint, and associate the endpoint with the ALBs.
中文翻译:
配置 EC2 实例以使用 Amazon Data Lifecycle Manager (Amazon DLM) 拍摄 EBS 卷的快照。为RDS数据库实例创建跨区域只读副本。在第二个 AWS 区域中创建 ALB。创建 AWS Global Accelerator 终端节点,并将该终端节点与 ALB 关联。
答案
A
解析
正确答案:A 解析: 本题应选择 A。 正确选项: A. 配置 EC2 实例以使用 AWS Elastic Disaster Recovery。为RDS数据库实例创建跨区域只读副本。在第二个 AWS 区域中创建 ALB。创建 AWS Global Accelerator 终端节点,并将该终端节点与 ALB 关联。更新 DNS 记录以指向 Global Accelerator 端点。 选择理由: 该选项最直接地满足题干中的关键约束。做 S...