Exam AWS Certified Solutions Architect - Associate SAA-C02 topic 1 question 199 discussion

The requirement here is to optimize the existing solution. Since the CPU utilization were consistently low, then it means they are "over-proviisoning". The running instances has more capacity that what is actually being consumed or used. Now you'll have to find a way to maximize the use of the instances. One way is to have more traffic coming in or more data coming in to be processed which will consume the instance's CPU. The other way is to change the instance to a much smaller version with capacity enough to handle any load. Since it's an ASG and ASG uses launch configuration, we can change the instance type in the launch configuration. However, we can only modify the launch configuration DURING CREATION. So the best way here is have a new launch configuration with a smaller instance. Correct answer: D

D is ok for me

D is the answer

since min 1 in each az is already the lowest possible while still being HA cannot remove any further.. hence downgrade the CPUs to better utilize the CPU load.

What if the current instances are already the smallest instance type?

We have to ensure maximum utilization with fault tolerance. So, We need at least 2 EC2 with a lower config with auto-scaling.

D. Create a new launch configuration that uses smaller instance types. Update the existing Auto Scaling group.

D. makes a lot of sense. B. makes no sense at all!

D is correct . ASG launch configuration cant be modified once created. So D is correct.

"CPU utilization is consistently low" -> this would mean smaller instance types are to be used Answer is D

The problem with Choosing C is the instances will never scale up as CPU will always be low. Best thing is use smaller instances with auto scaling. That way when CPU is high auto scaling can kick in and add more instances. So D is correct.

D is correct. CPU utilization is under for most cases. It isnt even triggering auto scaling in the first place. Need to reduce instance size

D for sure

Ans=C. Modify the Auto Scaling group scaling policy to scale in and out based on a higher CPU utilization metric.

Answer : D. Tricky question, Already CPU is "low utilization". There is no point in ASG with scale in out policy using HIGH CPU utilization.

Answer: D

Ans. D. They asked us for fault tolerance, we should have at least 2 instances. The only solutions is that we shouls down scale the size of the instances changing the launch configuration.