A SysOps administrator must provision a fault-tolerant set of Amazon EC2 instances for a high-performance computing workload that needs the lowest possible latency between nodes. Which steps should the administrator perform to satisfy these constraints? (Choose two.)
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Correct answer: Place the EC2 instances in an Auto Scaling group within a single subnet., Launch the EC2 instances into a cluster placement group..
Why this is the answer
To achieve the lowest possible latency between nodes for a high-performance computing workload, launching EC2 instances into a cluster placement group is crucial. This ensures instances are physically close together within a single Availability Zone, maximizing network throughput and minimizing latency. Placing these instances in an Auto Scaling group within a single subnet provides fault tolerance by automatically replacing unhealthy instances while maintaining the low-latency benefits of the cluster placement group. Creating an Amazon EFS file system is for shared storage, not directly for low-latency instance communication. A Multi-AZ Network Load Balancer distributes traffic across multiple Availability Zones, which would increase latency between the instances themselves. A partition placement group separates instances into logical partitions to reduce correlated failures, but it doesn't guarantee the lowest latency between all instances compared to a cluster placement group.
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