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Difficulty: MediumHigh-Performing and Elastic Compute Solutions

A financial services company is deploying a distributed financial risk modeling application on Amazon EC2 instances. The application nodes must communicate with each other using low-latency, high-throughput network connections with sub-millisecond latencies. A Network Load Balancer (NLB) distributes external simulation traffic to these nodes on TCP port 8443. The architecture must ensure optimal compute performance and accurate health reporting.

Which combination of actions should the solutions architect take to meet these requirements? (Select TWO.)

  1. Deploy the EC2 instances in a cluster placement group within a single Availability Zone.Answer
  2. Configure the target group health check for the Network Load Balancer to use TCP port 8443.Answer
  3. C
    Deploy the EC2 instances in a spread placement group across multiple Availability Zones.
  4. D
    Configure the target group health check to query the default HTTP port 80 to minimize processing overhead on the instances.
  5. E
    Deploy the EC2 instances in a partition placement group to isolate failure domains.

Answer

Deploy the EC2 instances in a cluster placement group within a single Availability Zone, and configure the target group health check for the Network Load Balancer to use TCP port 8443.
The correct architecture uses a cluster placement group to enable low-latency, high-throughput node-to-node communication, and aligns the target group health check port with the application's actual port (8443) to prevent false health check failures.

Step-by-Step Solution

1
Identify the networking performance requirements for the cluster nodes.
Tightly coupled nodes requiring sub-millisecond latencies point to a cluster placement group within a single Availability Zone.
Cluster placement groups logically group instances within a single Availability Zone to enable low-latency, high-throughput networking between nodes.
2
Identify the load balancer health check requirements.
The target group must be configured with a health check port matching the application service port (8443).
Mismatched health check ports (such as using default port 80 when the application runs on port 8443) will cause health checks to fail, marking healthy nodes as unhealthy.

Key Concept

High-Performance Compute Placement and Load Balancer Health Monitoring
Estimated Time:2m 0s
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Topics

High-Performing and Elastic Compute Solutions

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