A company is deploying an application that processes streaming data in near-real time on Amazon EC2 instances. The network architecture must be configurable to provide the lowest possible latency between nodes. Which combination of network solutions will meet these requirements? (Choose two.)

Enhanced networking, enabled by Elastic Network Adapters (ENA) or Intel 82599 Virtual Function interface, provides higher bandwidth, higher packet per second (PPS) performance, and consistently lower inter-instance latency. This directly addresses the requirement for the lowest possible latency. A cluster placement group ensures that EC2 instances are launched within a single Availability Zone on hardware that shares the same network fabric, further minimizing network latency between instances. Grouping instances in separate accounts would increase network overhead and latency. Attaching multiple ENIs primarily increases network throughput or allows for multiple IP addresses, not necessarily lower latency between instances. EBS-optimized instances improve performance for EBS I/O, which is storage-related, not directly for network latency between instances.