Exam ANS-C00 topic 1 question 203 discussion

Please note, the question is asking for the INCORRECT answer not the correct one

what about C? The question asks what is incorrect. Guarantee for capacity can be ensured by creating a Capacity Reservation. https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/cr-cpg.html What C suggests creating all the instances at once doesn't help and is clearly not the way to ensure capacity demands in the future. So I think it's C.

A is the right answer

A is false on 14th JAN-22 https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/placement-groups.html#placement-groups-spread ***A spread placement group can span multiple Availability Zones in the same Region. You can have a maximum of seven running instances per Availability Zone per group.*** for those who looking B see below https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/placement-groups.html If you stop an instance in a placement group and then start it again, it still runs in the placement group. However, if you are not using a Capacity Reservation for your cluster placement group, the instance start fails if there is insufficient capacity. so you can overcome instance frailer by using a Capacity Reservation for your cluster placement group that turns B as TRUE.

I will go with A

A - they are physically in same AZ... I dont know why many ppl say placement group can spread cross AZs.. https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/placement-groups.html Both Spread, Cluster, Partition are in same AZ. Cluster - in same rack Partition - each groups are separated in rack but instances in same group if they are in same rack Spread - each instance are separated in rack B - the instance will be placed in same placement group even stop and start...although it will have capacity error...as no free instance for the setup

A. A spread placement group creates instances in different Availability Zones. B. It will always means most of times, but not all the time. I am leaning toward A.

A. A spread placement group can span multiple Availability Zones in the same Region. You can have a maximum of seven running instances per Availability Zone per group. https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/placement-groups.html

Old question. A and B both are correct now

A is incorrect, spread placement group can span AZs https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/placement-groups.html

Ans: A

B. If you stop an instance in a placement group and then start it again, it still runs in the placement group. However, the start fails if there isn't enough capacity for the instance.

I am leaning towards B too but A is not right anymore since the placement group can go across AZ now too

https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/placement-groups.html If you stop an instance in a placement group and then start it again, it still runs in the placement group. However, the start fails if there isn't enough capacity for the instance.