Your network contains an Active Directory domain named contoso.com. All domain controllers run Windows Server 2012 R2. The forest functional level is Windows Server 2012.
Your company plans to deploy an application that will provide a search interface to users in the company.
The application will query the global catalog for the Employee-Number attribute.
You need to recommend a solution to ensure that the application can retrieve the Employee-Number value from the global catalog.
What should you include in the recommendation?