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Welcome to the Administer Virtual Networking lesson. This module is part of the AZ-104 course and teaches the core Azure networking capabilities you need to design, secure, and operate virtual networks. You’ll learn practical configuration steps and design considerations so your cloud resources can communicate reliably and securely. What this lesson covers:
  • Configuring virtual networks
    • Create and configure Azure Virtual Networks (VNets), define IP address spaces, and design subnets to segment traffic and isolate workloads.
  • Configuring Network Security Groups (NSGs)
    • Create and apply NSGs and rules to allow or deny inbound and outbound traffic to resources, improving the security posture of your VNets.
  • Azure DNS
    • Configure Azure DNS zones and records, manage domain names, and ensure reliable name resolution for services and applications.
This module focuses on hands-on configuration and common operational tasks. Familiarity with basic Azure concepts—subscriptions, resource groups, and the Azure Portal—will help you follow along more effectively.
Why this matters
  • Reliable networking is foundational for Azure workloads; VNets, subnets, NSGs, and DNS together determine reachability, segmentation, and access control.
  • Correct IP addressing and subnet design reduce overlapping address issues and simplify scaling.
  • NSGs enforce boundary-level security while Azure DNS provides stable name resolution for services and automation.
Quick reference — what you’ll learn Prerequisites
  • Basic familiarity with Azure Portal or Azure CLI.
  • An Azure subscription and permission to create resources (VNets, NSGs, DNS zones).
Links and references With that overview complete, we’ll now move on to configuring virtual networks.

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