Networking is a fundamental concept of computing workloads or data centers to the cloud. Your resources must communicate with each other and stay resistant against any outside threats or cyber events.

1. What is Azure Virtual Network?
Introduction
Networking is a fundamental concept of computing workloads or data centers to the cloud. Your
resources must communicate with each other and stay resistant against any outside threats or
cyber events. Virtual networking facilitates communication between numerous computers,
virtual servers and machines, or devices across offices and data centers. Virtual networks utilize
traditional tools such as switches and network adapters, making routing and network
configuration seamless.
Virtual networking enables network administrators to effectively modify the network without
switching out or buying new hardware, flexibility in network provisioning, and the ability to move
data across networks without worrying about security or availability. It is the base for cloud
architectures and applications as it helps access, connect, modify, and secure cloud resources.
Why use an Azure Virtual Network?
The major reason you should go for the Azure virtual network is that it enables Azure resources
to communicate.
There are some key scenarios as well that you can accomplish with a VNet, such as-
• Communication of Azure resources with the internet

2. • Filtering network traffic
• Communication between Azure resources
• Integration with Azure services
• Communication with on-premises resources
• Routing network traffic
Apart from these network options, you can also change the communication settings to allow only
inbound communication from the internet. That means you set up rules to add a Load Balancer
or a public IP.
Virtual Network Limits and Availability
• Limits
Azure Virtual Network has certain limits for Azure resources that you can deploy to the cloud. In
most Azure Virtual Networks, the networking limits are set to maximum, but you can increase
the limits if there's a need. For increasing networking limits, you can refer to the VNet limits page.
• Availability
The Azure Virtual Networks and the subnets span come with all availability zones in a region.
When there's a need to accommodate zonal resources, you don't have to divide them by
availability zones.
Azure offers various services and tools to manage the cloud infrastructure. Azure Resource
Manager is one of its key services that Azure Administrators rely on to manage the cloud resources
effectively. Read the blog on Azure Resource Manager to learn how the service helps in moving
resources in the cloud.
Elements of Azure Virtual Networks
There are multiple functionalities and services that Azure VNets provide when you connect to
Azure resources. These services are brought all together so that organizations have all the
required tools in one place for smooth cloud deployment.
• Address Space
This comes first when you create a VNet; it means assigning a private IP address space in the
range: RFC 1918. Further, this IP address space will contain other familiar IP addresses, like
192.168.0.0, 10.0.0.0, and 172.16.0.0. you may notice that more than one IP address ranges in a
virtual network to create additional subnets.
• Subnets

3. The smaller segment of the virtual network is called Subnets. The main use of these Subnets is to
VNet portions to specific (target) resources.
• Network Security Groups
Network Security Groups (NSG) protect subnets in the Virtual Network, and help filter out traffic
from the network. For filtering the traffic, you first need to define the source and then
destination; after that, you have to select the port and protocol for traffic identification.
• Routing and Peering
Azure is designed to automatically create the best routes between subnets, on-premises
networks, virtual networks, and the internet. However, you can implement route tables that will
help control traffic for each subnet.
For creating an Azure Virtual Network, you must be a Microsoft Azure Administrator.
Microsoft certified Azure Administrators create virtual networks and support the cloud team with
their activities. Check out our Azure Administrator guide blog to learn more about their
responsibilities and the training required.
AZ-104T00: Microsoft Azure Administrator: Overview
This is among Microsoft's most demanding courses for IT Professionals, as it teaches how
to become an Azure Administrator and learn everything related-
• Azure subscriptions
• Configure virtual networking
• Secure identities
• Administer the infrastructure
• Manage network traffic
• Implement storage solutions
• Connect Azure and on-premises sites
• Implement web apps and containers
• Monitoring your solution.
• Create and scale virtual machines
• Backup and share dataLearn how to use Azure Active Directory and how to secure
identities to implement groups and users.
• Managing your subscriptions and accounts, and using Role-Based Access Control.
• The major tools required to manage infrastructure by an Azure Administrator.
• Virtual networking concepts from a very basic level.
• Basic storage features
• Azure virtual machines
• Features of intersite connectivity, including VNet Peering.

4. • Serverless computing in virtual networks.
Apart from the learning track, this Microsoft Azure Administrator webinar will help you
implement, monitor, and maintain Azure solutions.
Prerequisites
• Basic understanding of the Active Directory concepts.
• Understanding network configuration and technical terms such as virtual private
networks (VPNs), TCP/IP, encryption technologies, Domain Name System (DNS), and
firewalls.
• Knowledge about on-premises virtualization technologies and VMs.
• Must know about backup, restore operations, and disaster recovery.
Why should you choose NetCom Learning?
Azure Virtual Network enables Azure resources to communicate and expertise in implementing,
monitoring, and managing a Microsoft Azure environment.
NetCom Learning brings you the best Microsoft Azure Administrator training course. This course
will teach you to manage your Azure subscriptions, secure identities, administer the Azure
infrastructure, configure, create and scale virtual networking, implement web apps, manage
network traffic, and more.