Your network contains a subnet named Subnet1. Subnet1 contains a DHCP server named Server1.  You deploy a new subnet named Subnet2. On Subnet2， you deploy a new server named 5erver2  that runs Windows Server 2012 R2. You need to configure Server2 to route DHCP broadcast from  Subnet2 to Server1. Which server role should you install on Server2？ To answer， select the appropriate role in the answer area.

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