
Explanation/Reference:
Explanation:
* SYSVOL is simply a folder which resides on each and every domain controller within the domain. It contains the domains public files that need to be accessed by clients and kept synchronised between domain controllers.
Here File1.text will be stored on both domain controllers in contoso.com (DC1 and DC2).
* User1 will be stored on both domain controllers in adatum.com (DC3 and DC4), and on the global catalog server in contoso.com (DC1).
* The global catalog is the set of all objects in an Active Directory Domain Services (AD DS) forest. A global catalog server is a domain controller that stores a full copy of all objects in the directory for its host domain and a partial, read-only copy of all objects for all other domains in the forest. Global catalog servers respond to global catalog queries.
GPO1 will be stored on the global catalog servers in the forest (Dc1 and DC3) Reference: Understanding the Global Catalog
https://technet.microsoft.com/en-us/library/cc730749.aspx