Microsoft Azure Architect Design (AZ-304) Practice Test

What is the best solution to host a multi-tier application consisting of Docker images, ensuring public access for the front end and restricted access between back-end containers?

1. Azure Kubernetes Service (AKS)

2. Azure Service Fabric

3. Azure Container Instances

4. Azure Virtual Machines

The correct answer is: Azure Container Instances

The most appropriate solution for hosting a multi-tier application that consists of Docker images, with the requirement for public access for the front end and restricted access between back-end containers, is Azure Kubernetes Service (AKS). AKS provides robust orchestration for containerized applications, which makes it ideal for managing multi-tier applications. It enables you to deploy, scale, and manage Docker containers efficiently. With AKS, you can create different services and manage networking between them, allowing you to expose the front-end service to the public while keeping back-end services isolated and secure. AKS also includes native support for networking features such as Network Policies, which can be used to restrict the communication between different sets of containers. This allows you to enforce strict security policies that ensure only authorized services can communicate with each other. The other options, while capable of running Docker containers, do not offer the same level of control and orchestration that AKS provides. Azure Container Instances, for instance, is more suited for ephemeral workloads or simpler applications where networking complexity is minimal. Azure Service Fabric offers microservices hosting but can be more complex to manage and set up for certain use cases. Azure Virtual Machines can run Docker containers but lack the orchestration capabilities needed for a multi-tier architecture,