Conditional Access policies enforce registration, requiring unregistered users to complete registration at first sign-in, an important security consideration.
References:
https://docs.microsoft.com/en-us/azure/active-directory/authentication/howto-mfa-getstarted

References: https://docs.microsoft.com/en-us/azure/architecture/reference-architectures/n-tier/n-tier-sql-server

Explanation

Step 1: New-AzureRmNetworkSecurityRuleConfig
Step 2: New-AzureRmNetworkSecurityGroup
Step 3: New-AzureRmVirtualNetworkSubnetConfig
Step 4: New-AzureRmVirtualNetwork
Example: Create a virtual network with a subnet referencing a network security group New-AzureRmResourceGroup -Name TestResourceGroup -Location centralus
$rdpRule = New-AzureRmNetworkSecurityRuleConfig -Name rdp-rule -Description "Allow RDP" -Access Allow -Protocol Tcp -Direction Inbound -Priority 100 -SourceAddressPrefix Internet -SourcePortRange *
-DestinationAddressPrefix * -DestinationPortRange 3389
$networkSecurityGroup = New-AzureRmNetworkSecurityGroup -ResourceGroupName TestResourceGroup
-Location centralus -Name "NSG-FrontEnd" -SecurityRules $rdpRule
$frontendSubnet = New-AzureRmVirtualNetworkSubnetConfig -Name frontendSubnet -AddressPrefix
"10.0.1.0/24" -NetworkSecurityGroup $networkSecurityGroup
$backendSubnet = New-AzureRmVirtualNetworkSubnetConfig -Name backendSubnet -AddressPrefix
"10.0.2.0/24" -NetworkSecurityGroup $networkSecurityGroup
New-AzureRmVirtualNetwork -Name MyVirtualNetwork -ResourceGroupName TestResourceGroup
-Location centralus -AddressPrefix "10.0.0.0/16" -Subnet $frontendSubnet,$backendSubnet References:
https://docs.microsoft.com/en-us/powershell/module/azurerm.network/new-azurermvirtualnetwork?view=azurer

Reference:
https://docs.microsoft.com/en-us/azure/azure-resource-manager/resource-group-using-tags

Explanation
Scenario: Litware must meet technical requirements including:
Ensure that VM3 can establish outbound connections over TCP port 8080 to the applications servers in the Montreal office.
IP flow verify checks if a packet is allowed or denied to or from a virtual machine. The information consists of direction, protocol, local IP, remote IP, local port, and remote port. If the packet is denied by a security group, the name of the rule that denied the packet is returned. While any source or destination IP can be chosen, IP flow verify helps administrators quickly diagnose connectivity issues from or to the internet and from or to the on-premises environment.
References:
https://docs.microsoft.com/en-us/azure/network-watcher/network-watcher-ip-flow-verify-overview
Topic 3, Contoso Ltd
Overview
Contoso, Ltd. is a manufacturing company that has offices worldwide. Contoso works with partner organizations to bring products to market.
Contoso products are manufactured by using blueprint files that the company authors and maintains.
Existing Environment
Currently, Contoso uses multiple types of servers for business operations, including the following:
* File servers
* Domain controllers
* Microsoft SQL Server servers
Your network contains an Active Directory forest named contoso.com. All servers and client computers are joined to Active Directory.
You have a public-facing application named App1. App1 is comprised of the following three tiers:
* A SQL database
* A web front end
* A processing middle tier
Each tier is comprised of five virtual machines. Users access the web front end by using HTTPS only.
Requirements
Planned Changes
Contoso plans to implement the following changes to the infrastructure:
Move all the tiers of App1 to Azure.
Move the existing product blueprint files to Azure Blob storage.
Create a hybrid directory to support an upcoming Microsoft Office 365 migration project.
Technical Requirements
Contoso must meet the following technical requirements:
* Move all the virtual machines for App1 to Azure.
* Minimize the number of open ports between the App1 tiers.
* Ensure that all the virtual machines for App1 are protected by backups.
* Copy the blueprint files to Azure over the Internet.
* Ensure that the blueprint files are stored in the archive storage tier.
* Ensure that partner access to the blueprint files is secured and temporary.
* Prevent user passwords or hashes of passwords from being stored in Azure.
* Use unmanaged standard storage for the hard disks of the virtual machines.
* Ensure that when users join devices to Azure Active Directory (Azure AD), the users use a mobile phone to verify their identity.
Minimize administrative effort whenever possible.
User Requirements
Contoso identifies the following requirements for users:
* Ensure that only users who are part of a group named Pilot can join devices to Azure AD.
* Designate a new user named Admin1 as the service administrator of the Azure subscription.
* Admin1 must receive email alerts regarding service outages.
* Ensure that a new user named User3 can create network objects for the Azure subscription.