Microsoft Azure Architect Design (AZ-301) Practice Exam

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Which Azure service is recommended to provide a secure private connection with high availability between on-premises networks and Azure virtual networks?

ExpressRoute
Virtual network peering
VPN Gateway
Azure Load Balancer

The correct answer is: ExpressRoute

The recommended Azure service for providing a secure private connection with high availability between on-premises networks and Azure virtual networks is ExpressRoute. This service creates a dedicated, private connection that bypasses the public internet, ensuring a more secure and reliable connection. ExpressRoute offers improved performance and latency reduction compared to other connectivity options. It supports data transmission for both private and public Azure services, making it a versatile choice for enterprises looking to integrate on-premises environments with cloud resources securely. Additionally, ExpressRoute is designed with redundancy and high availability in mind, ensuring that businesses can maintain consistent connectivity even in the face of potential issues. The other options, while useful in their contexts, do not meet the specific requirements of a dedicated high-availability secure connection between on-premises and Azure environments. For example, Virtual Network Peering connects different virtual networks but is not a direct solution for on-premises network connectivity. VPN Gateway does provide secure connections but typically relies on the public internet, which may introduce variability in performance and security. Azure Load Balancer is focused on distributing workloads across resources within Azure and does not facilitate direct secure connections between on-premises networks and Azure.