AWS Certified Advanced Networking Specialty Practice Exam

What is a recommended approach to scale up network performance for high throughput transfers?

1. Increase the network bandwidth

2. Distribute the flows across many instances

3. Switch to a different AWS region

4. Optimize application code for network efficiency

The correct answer is: Distribute the flows across many instances

Distributing the flows across many instances is a recommended approach to scale up network performance for high throughput transfers because it allows for parallel processing of data. When multiple instances handle different parts of the workload, the overall throughput can significantly improve. This technique takes advantage of horizontal scaling, which effectively balances the load and can help achieve higher bandwidth utilization. By leveraging multiple instances, you not only spread out the demands on your network but also take advantage of the capacity of each instance, allowing for simultaneous transfers. This is particularly applicable in scenarios where data can be processed in parallel, thereby reducing bottlenecks that might occur if a single instance were to manage all the traffic. Increasing network bandwidth is a valid consideration but may not always be feasible or cost-effective, and simply enhancing bandwidth doesn’t necessarily mean that the actual data transfer will improve if it's bottlenecked by limited processing capabilities or inefficient coding practices. Switching to a different AWS region does not inherently improve network performance, as it may introduce additional latencies and complexities due to geographical distance and routing. Furthermore, optimizing application code for network efficiency is crucial but usually addresses inefficiencies rather than scaling throughput in a direct manner. Thus, distributing flows across many instances effectively enhances scalability and performance for high throughput transfers, making it