Exam AWS Certified Solutions Architect - Associate SAA-C02 topic 1 question 531 discussion

B D is for sure

i would go for BE~

B and D are the answers

BD. B Spread prevent groups of nodes from sharing the same underlying hardware and D AutoScaling support a highly scalable solution.

DE. I spent a lot of time googling and reading to really understand the difference between partition and spread... in partition: more than one EC2 instance (up to 7 if in same AZ) can share the same hardware… so AWS will logical groups EC2 instances, operate groups by hardware/rack.. so yes it be over multiple AZs but of course same region In spread: every EC2 instance must run on separate hardware/rack Ab/c the questions clearly mentioned that “prevent groups of nodes from sharing the same underlying hardware”. It’s talking about partition

Spread – strictly places a small group of instances across distinct underlying hardware to reduce correlated failures. https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/placement-groups.html#placement-groups-partition

B and D makes sense

About "processes massive amounts of data" in quesiton, Partition – spreads your instances across logical partitions such that groups of instances in one partition do not share the underlying hardware with groups of instances in different partitions. This strategy is typically used by large distributed and replicated workloads, such as Hadoop, Cassandra, and Kafka. https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/placement-groups.html#placement-groups-partition

D and E D for Scalability E over B because B has a limitation of 7 nodes per AZ

Too much of confusion and different answers.

Correct answer B and D

The question says 2 actions in combination : B for distinct underlying hardware and D for scalability.

it says "avoid groupings of nodes having the same underlying hardware". Grouping of Nodes means the group can have same underlying hardware but each group should have separate hardware. So cant be B it has to be E

I will go with BD. How can we place in both the placement group together.

I would say this question is to test your knowledge of EC2 instance Placement, and attempt to confuse you with a similar topic of Auto Scaling. Depending on the type of workload, you can create a placement group using one of the following placement strategies: Cluster, Partition, Spread. How is using an auto scaling group going to help "avoiding grouping of nodes having the same underlying hardware"? Reference: https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/placement-groups.html

An instance can be launched in ""one"" =.=''' placement group at a time; it cannot span multiple placement groups. B D is correct 2022-03-08 https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/placement-groups.html

Please go through 1st option once.