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Exam AWS Certified Solutions Architect - Professional topic 1 question 848 discussion

Exam question from Amazon's AWS Certified Solutions Architect - Professional
Question #: 848
Topic #: 1
[All AWS Certified Solutions Architect - Professional Questions]

A company is deploying a distributed in-memory database on a fleet of Amazon EC2 instances. The fleet consists of a primary node and eight worker nodes. The primary node is responsible for monitoring cluster health, accepting user requests, distributing user requests to worker nodes, and sending an aggregate response back to a client. Worker nodes communicate with each other to replicate data partitions.
The company requires the lowest possible networking latency to achieve maximum performance.
Which solution will meet these requirements?

  • A. Launch memory optimized EC2 instances in a partition placement group.
  • B. Launch compute optimized EC2 instances in a partition placement group.
  • C. Launch memory optimized EC2 instances in a cluster placement group
  • D. Launch compute optimized EC2 instances in a spread placement group.
Show Suggested Answer Hide Answer
Suggested Answer: C 🗳️
by mostafasookar at April 21, 2022, 6:28 a.m.
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mostafasookar
Highly Voted 2 years, 5 months ago
C is correct
upvoted 9 times
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janvandermerwer
Most Recent 1 year, 11 months ago
Selected Answer: C
Cluster = Close together for high performance, networking etc. Partition = Spread so they don't share the same underlying hardware Spread = Similar to above, but alot stricter.
upvoted 4 times
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joancarles
2 years ago
Selected Answer: C
The cluster placement group is indicated for high troughput and low network latency, while the partition placement group is used to avoid hw failures separating the instances in groups running over different hardware.
upvoted 4 times
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Sathish1412
2 years ago
Selected Answer: A
distributing user requests to worker nodes, and sending an aggregate response back to a client. Worker nodes communicate with each other to replicate data partitions https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/placement-groups.html
upvoted 3 times
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Enigmaaaaaa
2 years, 2 months ago
Selected Answer: C
C - memory instance + cluster to have lowest possible network latency.
upvoted 3 times
gondohwe
2 years, 2 months ago
yes from correct indeed..a Cluster placement group allows intsances to be grouped together minimizing latency between them
upvoted 1 times
...
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