Question 1 of 30
In designing a multi-tier application architecture on Azure, you are tasked with ensuring optimal network performance and security. The application consists of a web front-end, an application layer, and a database layer. Each layer is hosted in separate Azure Virtual Networks (VNets) to enhance security and isolation. You need to implement a solution that allows seamless communication between these layers while minimizing latency and ensuring that only necessary traffic is allowed. Which design approach best achieves these objectives?
Implement Azure Virtual Network Peering between the VNets and configure Network Security Groups (NSGs) to restrict traffic based on application requirements.
Use Azure VPN Gateway to connect the VNets and allow all traffic between them for ease of management.
Deploy an Azure Application Gateway in front of the web tier and allow direct access to the database tier from the application layer.
Create a single VNet that encompasses all layers and use subnets to separate them, allowing unrestricted traffic flow between subnets.

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