SAP-C02 第 354 题
题目
A solutions architect is reviewing an application's resilience before launch. The application runs on an Amazon EC2 instance that is deployed in a private subnet of a VPC. The EC2 instance is provisioned by an Auto Scaling group that has a minimum capacity of 1 and a maximum capacity of 1. The application stores data on an Amazon RDS for MySQL DB instance. The VPC has subnets configured in three Availability Zones and is configured with a single NAT gateway. The solutions architect needs to recommend a solution to ensure that the application will operate across multiple Availability Zones. Which solution will meet this requirement?
中文翻译:
解决方案架构师正在应用程序启动前审查其弹性。该应用程序在部署在 VPC 的私有子网中的 Amazon EC2 实例上运行。 EC2 实例由 Auto Scaling 组预置,该组的最小容量为 1,最大容量为 1。该应用程序将数据存储在 Amazon RDS for MySQL 数据库实例上。 VPC 在三个可用区中配置了子网,并配置了单个 NAT 网关。解决方案架构师需要推荐一个解决方案,以确保应用程序能够跨多个可用区运行。哪种解决方案可以满足这个要求?
选项
A. Deploy an additional NAT gateway in the other Availability Zones. Update the route tables with appropriate routes. Modify the RDS for MySQL DB instance to a Multi-AZ configuration. Configure the Auto Scaling group to launch the instances across Availability Zones. Set the minimum capacity and maximum capacity of the Auto Scaling group to 3.
中文翻译:
在其他可用区中部署额外的 NAT 网关。使用适当的路由更新路由表。将 RDS for MySQL 数据库实例修改为多可用区配置。配置 Auto Scaling 组以跨可用区启动实例。设置Auto Scaling组的最小容量和最大容量为3。
B. Replace the NAT gateway with a virtual private gateway. Replace the RDS for MySQL DB instance with an Amazon Aurora MySQL DB cluster. Configure the Auto Scaling group to launch instances across all subnets in the VPC. Set the minimum capacity and maximum capacity of the Auto Scaling group to 3.
中文翻译:
将 NAT 网关替换为虚拟专用网关。将 RDS for MySQL 数据库实例替换为 Amazon Aurora MySQL 数据库集群。配置 Auto Scaling 组以跨 VPC 中的所有子网启动实例。设置Auto Scaling组的最小容量和最大容量为3。
C. Replace the NAT gateway with a NAT instance. Migrate the RDS for MySQL DB instance to an RDS for PostgreSQL DB instance. Launch a new EC2 instance in the other Availability Zones.
中文翻译:
将 NAT 网关替换为 NAT 实例。将 RDS for MySQL 数据库实例迁移到 RDS for PostgreSQL 数据库实例。在其他可用区启动新的 EC2 实例。
D. Deploy an additional NAT gateway in the other Availability Zones. Update the route tables with appropriate routes. Modify the RDS for MySQL DB instance to turn on automatic backups and retain the backups for 7 days. Configure the Auto Scaling group to launch instances across all subnets in the VPC. Keep the minimum capacity and the maximum capacity of the Auto Scaling group at 1.
中文翻译:
在其他可用区中部署额外的 NAT 网关。使用适当的路由更新路由表。修改RDS for MySQL实例开启自动备份,并保留备份7天。配置 Auto Scaling 组以跨 VPC 中的所有子网启动实例。 Auto Scaling组的最小容量和最大容量保持为1。
答案
A
解析
正确答案:A 解析: 本题应选择 A。 正确选项: A. 在其他可用区中部署额外的 NAT 网关。使用适当的路由更新路由表。将 RDS for MySQL 数据库实例修改为多可用区配置。配置 Auto Scaling 组以跨可用区启动实例。设置Auto Scaling组的最小容量和最大容量为3。 选择理由: 该选项最直接地满足题干中的关键约束。做 SAP-C02 题目时,需要同时对照题干里的限定词,例如最高性能、最低运维开销、成本效益、...