11.  Topic 2, Contoso, Ltd 
Case study
To answer the questions included in a case study, you will need to reference information that is provided in the case study. Case studies might contain exhibits and other resources that provide more information about the scenario that is described in the case study. Each question is independent of the other questions in this case study. 
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To start the case study
Overview
Existing Environment
The AD DS domain contains the domain controllers shown in the following table. 
Contoso recently purchased an Azure subscription.
The contoso.com domain contains the users shown in the following table. 
The contoso.com domain has the Group Policy Objects (GPOs) shown in the following table. 
The contoso.com domain has the Password Settings Objects (PSOs) shown in the following table. 
Server Infrastructure
By using Windows Firewall with Advanced Security, the servers have isolation connection security rules configured as shown in the following table. 
Server4 has no connection security rules. 
Server4 Configurations
Server4 has the disk configurations shown in the following exhibit. 
Virtualization Infrastructure
Technical Requirements
Which domain controller should be online to meet the technical requirements for DC4?