4Implement and Manage Virtual Networking

• 4.1Virtual Networks (VNet) and Subnets

  Understand the foundation of Azure networking: virtual networks (VNet) and address space, subnetting (public/private), and IP address basics.

• 4.2Network Security Groups (NSG)

  Understand allowing/denying inbound/outbound traffic with NSGs, evaluation by priority, 5-tuple rules, and applying NSGs to subnets/NICs.

• 4.3Network Connectivity and Name Resolution

  Understand VNet-to-VNet connectivity with peering, on-prem connectivity via VPN/ExpressRoute, Azure Load Balancer, and name resolution with Azure DNS.