You run a stateless web application with the following components: Elastic Load Balancer (ELB), 3
Web/Application servers on EC2, and 1 MySQL RDS database with 5000 Provisioned IOPS. Average
response time for users is increasing. Looking at CloudWatch, you observe 95% CPU usage on the
Web/Application servers and 20% CPU usage on the database. The average number of database disk
operations varies between 2000 and 2500.
Which two options could improve response times? (Pick 2 correct answers)
A. Use Auto Scaling to add additional Web/Application servers based on a CPU load threshold
B. Choose a different EC2 instance type for the Web/Application servers with a more appropriate
CPU/memory ratio
C. Use Auto Scaling to add additional Web/Application servers based on a memory usage threshold
D. Increase the number of open TCP connections allowed per web/application EC2 instance
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