An ExpressRoute circuit in Azure can terminate on which device? (Select all that apply)

The correct answer is that an ExpressRoute circuit in Azure can terminate on a Virtual Network Gateway. This is fundamental because the Virtual Network Gateway specifically supports the connectivity options for establishing a private connection between an Azure virtual network and on-premises infrastructure.

When you use an ExpressRoute circuit, the primary role of the Virtual Network Gateway is to facilitate the connection to the Azure virtual network, enabling the transfer of data across a private connection rather than over the public internet. This setup enhances security, reliability, and performance for enterprises leveraging Azure services.

Regarding the other options, while an ExpressRoute Gateway is potentially relevant in discussions about ExpressRoute, the correct function of terminating an ExpressRoute circuit depends specifically on the Virtual Network Gateway within an Azure virtual network. As for a VPN gateway, it relates to site-to-site connectivity and is not suitable for direct termination of an ExpressRoute circuit. Network Virtual Appliances (NVA) may also be used in various network configurations but do not serve as direct termination points for an ExpressRoute circuit. Thus, the context of how ExpressRoute functions within Azure infrastructure points toward the Virtual Network Gateway as the valid choice for termination.