Q49 — AWS SOA-C02 Ch.1

Question 49 of 100 | ← Chapter 1

A company has an Auto Scaling group of Amazon EC2 instances that scale based on average CPU utilization. The Auto Scaling group events log indicates an InsufficientInstanceCapacity error. Which actions should a SysOps administrator take to remediate this issue? (Choose two.)

• A. Change the instance type that the company is using.
• B. Configure the Auto Scaling group in different Availability Zones. ✓
• C. Configure the Auto Scaling group to use different Amazon Elastic Block Store (Amazon EBS) volume sizes.
• D. Increase the maximum size of the Auto Scaling group.
• E. Request an increase in the instance service quota. ✓

Correct Answer: B. Configure the Auto Scaling group in different Availability Zones., E. Request an increase in the instance service quota.

Explanation

Auto Scaling组的InsufficientInstanceCapacity错误通常由特定可用区或实例类型的容量不足引起。AWS文档指出，此类错误可通过切换实例类型（选项A）来尝试其他可能有容量的实例，或扩展至更多可用区（选项B）以利用不同区域的资源。选项A直接解决实例类型容量问题，选项B通过跨可用区分布提升资源获取概率。选项D和E未直接解决当前可用区/实例类型的即时容量限制，而选项C的EBS卷大小调整与实例启动容量无关。