Consider the following instructions on VNet creation for NC2 on Azure. • Sign in to your Azure portal... Create Virtual networks... • Click next, IP…

After defining the VNet's overall IPv4 address space, the critical next step for an NC2 on Azure deployment is to create the required subnets (for Management, Prism Element, and User VMs). A fundamental principle of IP networking, and a strict requirement for this setup, is that these subnets must have unique, non-overlapping IP address ranges within the VNet. Overlapping IPs would cause routing conflicts and prevent the cluster from deploying or functioning correctly. This is a crucial piece of information missing from the high-level instructions provided.

A. This is incorrect. Azure Virtual Network names must be unique within a resource group, but they can be duplicated across different resource groups within the same subscription.

B. While technically true that VNet names don't have to be unique across resource groups, this is not a critical instruction or a common point of failure compared to IP configuration.

D. This is incorrect. Overlapping IP address ranges for subnets within the same VNet is a fundamental network misconfiguration that would cause communication failures.

1. Nutanix University. (2023). Nutanix Cloud Clusters on Azure Administration (NCAA) v6.7 Student Guide. Chapter 3: Deploying a Nutanix Cluster on Azure, Lesson: Preparing the Azure Environment, Section: "Azure Networking," states the requirement to create multiple subnets and emphasizes that they must not have overlapping IP addresses.

2. Microsoft Azure Documentation. (2023). Virtual network and subnets. "Each subnet must have a unique address range, specified in CIDR format, within the address space of the VNet."