Microsoft Azure Architect Design (AZ-304) Practice Test

What network feature ensures secure and efficient distribution of network traffic using round robin routing?

1. Azure Application Gateway

2. Azure Load Balancer

3. Azure VPN Gateway

4. Azure ExpressRoute

The correct answer is: Azure Load Balancer

The Azure Load Balancer is designed to distribute network traffic efficiently across multiple resources, and it fundamentally utilizes round robin routing as part of its load balancing algorithm. This feature allows the Load Balancer to route incoming network traffic to a pool of backend resources in a continuous cycling manner. Each time a new connection is established, the Load Balancer directs the traffic to the next resource in the pool, ensuring a balanced load among back-end servers while maintaining high availability and responsiveness of the application. As connections are distributed evenly, it helps prevent any single resource from becoming a bottleneck due to excessive traffic. While the Azure Application Gateway does provide load balancing capabilities, it is specifically tailored towards HTTP/HTTPS traffic and offers additional features like SSL termination and application layer routing based on the content of the request, which goes beyond just round robin distribution. Azure VPN Gateway is primarily focused on providing secure site-to-site and point-to-site connectivity between on-premises networks and Azure, and does not involve traffic distribution among multiple resources. Azure ExpressRoute is a connectivity service that provides a private connection between your on-premises networks and Azure datacenters, which is suitable for large scale applications but does not involve load balancing or traffic distribution features. Thus, when considering the feature of