At this level, individuals are expected to have a basic understanding of what virtual networks are and how they function. They should be familiar with the Azure portal and have a rudimentary knowledge of IP addressing and subnets. This is the stage of initial exposure to the concept without any practical experience.

Novices can create a virtual network using the Azure portal and configure a basic network security group. They understand the role of network interfaces and can set up a simple virtual network peering. At this stage, they are beginning to apply their theoretical knowledge in a controlled environment.

Intermediate users are capable of implementing and managing virtual networking. They can configure VNet-to-VNet connections and understand how to implement an Azure load balancer. They can manage private IP addresses and configure network security groups and application security groups. This level indicates a transition from supervised to independent practice.

Advanced users can design and deploy ARM templates for virtual networks and implement Azure VPN and ExpressRoute circuits. They can configure Azure Virtual Network service endpoints and implement Azure Traffic Manager. They also understand and can implement Azure Front Door Service. At this level, they can handle complex tasks and troubleshoot common issues.

Experts can troubleshoot virtual network connectivity issues and design and implement multi-site or complex network infrastructure. They can secure virtual network resources using advanced NSG and ASG configurations and optimize network performance and availability. They can also integrate Azure virtual networks with on-premises networks. This level signifies mastery and the ability to innovate within the field.