Chapter 10: The Performance Efficiency Pillar

• 1. A, B, D. ECUs, vCPUs, and the Intel AES-NI encryption set are all instance type parameters. Aggregate cumulative cost per request has nothing to do with EC2 instances but is a common key performance indicator (KPI).
• 2. A, B, C. A launch configuration pointing to an EC2 AMI and an associated load balancer are all, normally, essential to an Auto Scaling operation. Passing a startup script to the instance at runtime may not be necessary, especially if your application is already set up as part of your AMI.
• 3. B. Defining a capacity metric, minimum and maximum instances, and a load balancer are all done during the Auto-Scaler configuration. Only the AMI is defined by the launch configuration.
• 4. A. Long-lived, more complex web applications and processes requiring in-depth monitoring and tracking are both more suited for EC2 instances, while processing transactions is a strength of Lambda.
• 5. D. RAID optimization is an OS-level configuration...