SAP-C02 第 25 题
题目
A company uses an on-premises data analytics platform. The system is highly available in a fully redundant configuration across 12 servers in the company’s data center. The system runs scheduled jobs, both hourly and daily, in addition to one-time requests from users. Scheduled jobs can take between 20 minutes and 2 hours to finish running and have tight SLAs. The scheduled jobs account for 65% of the system usage. User jobs typically finish running in less than 5 minutes and have no SLA. The user jobs account for 35% of system usage. During system failures, scheduled jobs must continue to meet SLAs. However, user jobs can be delayed. A solutions architect needs to move the system to Amazon EC2 instances and adopt a consumption-based model to reduce costs with no long-term commitments. The solution must maintain high availability and must not affect the SLAs. Which solution will meet these requirements MOST cost-effectively?
中文翻译:
一家公司使用本地数据分析平台。该系统在公司数据中心的 12 台服务器上采用完全冗余配置,具有高可用性。除了用户的一次性请求之外,系统每小时和每天运行预定作业。计划作业可能需要 20 分钟到 2 小时才能完成运行,并且具有严格的 SLA。计划作业占系统使用量的 65%。用户作业通常会在 5 分钟内完成运行,并且没有 SLA。用户作业占系统使用量的 35%。在系统故障期间,计划的作业必须继续满足 SLA。但是,用户作业可能会延迟。解决方案架构师需要将系统迁移到 Amazon EC2 实例,并采用基于消耗的模型来降低成本,而无需做出长期承诺。该解决方案必须保持高可用性,并且不得影响 SLA。哪种解决方案能够最具成本效益地满足这些要求?
选项
A. Split the 12 instances across two Availability Zones in the chosen AWS Region. Run two instances in each Availability Zone as On-Demand Instances with Capacity Reservations. Run four instances in each Availability Zone as Spot Instances.
中文翻译:
将 12 个实例拆分到所选 AWS 区域中的两个可用区。在每个可用区中运行两个实例作为具有容量预留的按需实例。每个可用区中运行四个实例作为 Spot 实例。
B. Split the 12 instances across three Availability Zones in the chosen AWS Region. In one of the Availability Zones, run all four instances as On-Demand Instances with Capacity Reservations. Run the remaining instances as Spot Instances.
中文翻译:
将 12 个实例拆分到所选 AWS 区域中的三个可用区。在可用区之一中,将所有四个实例作为具有容量预留的按需实例运行。将其余实例作为 Spot 实例运行。
C. Split the 12 instances across three Availability Zones in the chosen AWS Region. Run two instances in each Availability Zone as On-Demand Instances with a Savings Plan. Run two instances in each Availability Zone as Spot Instances.
中文翻译:
将 12 个实例拆分到所选 AWS 区域中的三个可用区。在每个可用区中运行两个实例作为具有 Savings Plan 的按需实例。每个可用区中运行两个实例作为 Spot 实例。
D. Split the 12 instances across three Availability Zones in the chosen AWS Region. Run three instances in each Availability Zone as On-Demand Instances with Capacity Reservations. Run one instance in each Availability Zone as a Spot Instance.
中文翻译:
将 12 个实例拆分到所选 AWS 区域中的三个可用区。在每个可用区中运行三个实例作为具有容量预留的按需实例。在每个可用区中运行一个实例作为 Spot 实例。
答案
D
解析
正确答案:D 解析: 本题应选择 D。 正确选项: D. 将 12 个实例拆分到所选 AWS 区域中的三个可用区。在每个可用区中运行三个实例作为具有容量预留的按需实例。在每个可用区中运行一个实例作为 Spot 实例。 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。本题相关考点主要包括:EC...