AWS Certified Advanced Networking Specialty Practice Exam

Which of the following is not considered a best practice for an application requiring low latency and high bandwidth on AWS?

1. Use a placement group to ensure low latency

2. Utilize multiple availability zones

3. Implement Auto Scaling for the application

4. Monitor application performance continuously

The correct answer is: Use a placement group to ensure low latency

The best practice for an application requiring low latency and high bandwidth on AWS involves making architectural choices that optimize performance. Utilizing a placement group is indeed a recommended strategy when it's critical to minimize latency. Placement groups provide a way to place instances close together within a single Availability Zone, which facilitates high-speed communication between them and reduces latency significantly. On the other hand, utilizing multiple Availability Zones is a best practice focused on resilience rather than direct performance improvement. While it can enhance availability and fault tolerance, it might introduce additional latency since data would need to traverse different zones. Implementing Auto Scaling is another key practice for ensuring that applications can handle varying loads effectively. It allows the application to dynamically adjust the number of running instances based on traffic demands, which is beneficial for maintaining performance but is not specifically aimed at reducing latency or maximizing bandwidth. Monitoring application performance continuously is fundamental to ensuring the application is meeting its performance goals. By tracking metrics and logs, you can make informed decisions and optimizations over time. Thus, of the options listed, utilizing multiple Availability Zones does not fit as a direct best practice for achieving low latency and high bandwidth, while the other practices focus more on enhancing those specific performance attributes.