AWS Certified Solutions Architect – Associate (SAA-C03)Design Cost-Optimized ArchitecturesMedium
A global online gaming company hosts its game servers on Amazon EC2 instances. These servers require extremely low latency and high packet per second (PPS) performance to provide a smooth gaming experience. The company wants to optimize network performance while keeping costs in mind. Which networking feature should they prioritize when selecting EC2 instances?
- AEnhanced Networking with Elastic Network Adapter (ENA).
- BPlacement Groups for instance co-location.
- CJumbo Frames for larger MTU.
- DElastic Fabric Adapter (EFA) for HPC workloads.
Show answer & explanationAnswer & explanation
Correct answer: A. Enhanced Networking with Elastic Network Adapter (ENA).
Enhanced Networking with ENA provides significantly higher PPS, lower network latency, and lower jitter for EC2 instances. This is crucial for real-time applications like online gaming where network performance directly impacts user experience, while being a standard feature on many instance types.
Why the other options are wrong
- B. Placement Groups reduce network latency between instances but don't enhance the raw network performance (PPS, bandwidth) of the instances themselves.
- C. Jumbo frames help with throughput but don't directly address latency and PPS as effectively as ENA for general networking.
- D. EFA is for high-performance computing (HPC) and machine learning workloads, offering OS bypass capabilities, which is overkill and more expensive for typical gaming server needs compared to ENA.
EC2 Enhanced Networking (ENA)
Enhanced Networking provides significantly higher packet per second (PPS) performance, lower network latency, and lower jitter using specialized network interfaces like Elastic Network Adapter (ENA) or Intel 82599 Virtual Function (VF) interface.
- Boosts network performance (PPS, latency, jitter).
- Uses ENA on most modern instance types.
- Essential for performance-sensitive applications like gaming or HPC.
Memory trick: ENA: Your network's turbo boost for a smooth game host.