SAP-C02 第 76 题
题目
A retail company is hosting an ecommerce website on AWS across multiple AWS Regions. The company wants the website to be operational at all times for online purchases. The website stores data in an Amazon RDS for MySQL DB instance. Which solution will provide the HIGHEST availability for the database?
中文翻译:
一家零售公司在多个 AWS 区域的 AWS 上托管一个电子商务网站。该公司希望该网站能够随时运行以进行在线购买。该网站将数据存储在 Amazon RDS for MySQL 数据库实例中。哪种解决方案将为数据库提供最高的可用性?
选项
A. Configure automated backups on Amazon RDS. In the case of disruption, promote an automated backup to be a standalone DB instance. Direct database traffic to the promoted DB instance. Create a replacement read replica that has the promoted DB instance as its source.
中文翻译:
在 Amazon RDS 上配置自动备份。在发生中断的情况下,将自动备份提升为独立的数据库实例。将数据库流量引导至升级的数据库实例。创建以升级的数据库实例作为源的替换只读副本。
B. Configure global tables and read replicas on Amazon RDS. Activate the cross-Region scope. In the case of disruption, use AWS Lambda to copy the read replicas from one Region to another Region.
中文翻译:
在 Amazon RDS 上配置全局表和只读副本。激活跨区域范围。如果出现中断,请使用 AWS Lambda 将只读副本从一个区域复制到另一个区域。
C. Configure global tables and automated backups on Amazon RDS. In the case of disruption, use AWS Lambda to copy the read replicas from one Region to another Region.
中文翻译:
在 Amazon RDS 上配置全局表和自动备份。如果出现中断,请使用 AWS Lambda 将只读副本从一个区域复制到另一个区域。
D. Configure read replicas on Amazon RDS. In the case of disruption, promote a cross-Region and read replica to be a standalone DB instance. Direct database traffic to the promoted DB instance. Create a replacement read replica that has the promoted DB instance as its source.
中文翻译:
在 Amazon RDS 上配置只读副本。在发生中断的情况下,将跨区域和只读副本提升为独立的数据库实例。将数据库流量引导至升级的数据库实例。创建以升级的数据库实例作为源的替换只读副本。
答案
D
解析
正确答案:D 解析: 本题应选择 D。 正确选项: D. 在 Amazon RDS 上配置只读副本。在发生中断的情况下,将跨区域和只读副本提升为独立的数据库实例。将数据库流量引导至升级的数据库实例。创建以升级的数据库实例作为源的替换只读副本。 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、可靠性、可扩展性、安全性、RTO/RPO、合规要求等。...