Explanation:

Reference:
https://docs.microsoft.com/en-us/azure/active-directory/conditional-access/location-condition
Location offer your country set, IP ranges MFA trusted IP and corporate network VPN gateway IP address: This is the public IP address of the VPN device for your on-premises network. The VPN device requires an IPv4 public IP address. Specify a valid public IP address for the VPN device to which you want to connect. It must be reachable by Azure Client Address space: List the IP address ranges that you want routed to the local on-premises network through this gateway. You can add multiple address space ranges. Make sure that the ranges you specify here do not overlap with ranges of other networks your virtual network connects to, or with the address ranges of the virtual network itself.
Topic 3, Overview
A Datum Environment
The on-premises network of A. Datum contains an Active Directory Domain Services (AD DS) forest named adatum.com.
The tenant contains the users shown in the following table.
Problem Statements
* Multiple users in the sales department have up to five devices. The sales department users report that sometimes they must contact the support department to join their devices to the Azure AD tenant because they have reached their device limit.
* A recent security incident reveals that several users leaked their credentials, a suspicious browser was used for a sign-in, and resources were accessed from an anonymous IP address,
* When you attempt to assign the Device Administrators role To IT_Group1, the group does NOT appear in the selection list.
* Anyone in the organization can invite guest users, including other guests and non-administrators.
* The helpdesk spends too much time resetting user passwords.
* Users currently use only passwords for authentication.
Requirements
A, Datum plans to implement the following changes;
* Configure self-service password reset {SSPR}.
* Configure multi-factor authentication (MFA) for all users.
* Configure an access review for an access package named Package1.
* Require admin approval for application access to organizational data.
* Sync the AD DS users and groupsoflitware.com with the Azure AD tenant.
* Ensure that only users that are assigned specific admin roles can invite guest users.
* Increase the maximum number of devices that can be joined or registered to Azure AD to 10.
Technical Requirements
* Users assigned the User administrator role must be able to request permission to use the role when needed for up to one year.
* Users must be prompted to register for MFA and provided with an option to bypass the registration for a grace period.
* Users must provide one authentication method to reset their password by using SSPR. Available methods must include:
* Email
* Phone
* Security questions
* The Microsoft Authenticator app
* Trust relationships must NOT be established between the adatum.com and litware.com AD DS domains.
* The principle of least privilege must be used.

Reference:
https://docs.microsoft.com/en-us/azure/active-directory/conditional-access/howto-conditional-access-policy-all-users-mfa