Q21 — AWS SOA-C02 Ch.1

Question 21 of 100 | ← Chapter 1

A SysOps administrator is required to monitor free space on Amazon EBS volumes attached to Microsoft Windows-based Amazon EC2 instances within a company's account. The administrator must be alerted to potential issues. What should the administrator do to receive email alerts before low storage space affects EC2 instance performance?

• A. Use built-in Amazon CloudWatch metrics, and configure CloudWatch alarms and an Amazon SNS topic for email notifications.
• B. Use AWS CloudTrail logs and configure the trail to send notifications to an Amazon SNS topic.
• C. Use the Amazon CloudWatch agent to send disk space metrics, then set up CloudWatch alarms using an Amazon SNS topic. ✓
• D. Use AWS Trusted Advisor and enable email notification alerts for EC2 disk space.

Correct Answer: C. Use the Amazon CloudWatch agent to send disk space metrics, then set up CloudWatch alarms using an Amazon SNS topic.

Explanation

Amazon CloudWatch默认不监控EC2实例级别的磁盘使用情况，需安装CloudWatch代理收集自定义指标（如磁盘空间）。AWS文档指出，对于Windows实例，需配置CloudWatch代理将磁盘空间数据发送至CloudWatch，然后基于自定义指标创建警报。选项A错误，因内置指标不含磁盘空间；选项B的CloudTrail用于API跟踪，无关监控；选项D的Trusted Advisor不提供实时磁盘监控。正确选项为C。