Your network contains an Active Directory forest named fabrikam.com. All servers run Windows Server 2008 R2 SP1.

You have two servers named Mail1 and Edge1. Mail1 is located on the internal network. Edge1 is located on the perimeter network. The internal network and the perimeter network are separated by a firewall.

You plan to deploy Exchange Server 2010 SP1 to Mail1 and Edge1. Mail1 will have the Mailbox, Hub Transport, and Client Access server roles installed. Edge1 will have the Edge Transport server role installed.

You need to ensure that you can install the Edge Transport server role on Edge1. The solution must minimize the amount of software installed on Edge1.

What should you install on Edge1? (Choose all that apply).

A.
The Web Server (IIS) server role.

B.
The SMTP Server feature.

C.
Microsoft .NET Framework 3.5 SP1.

D.
Remote Server Administration Tools (RSAT).

E.
Active Directory Lightweight Directory Services (AD LDS).

Explanation:
Reference:

http://technet.microsoft.com/en-us/library/bb691354.aspx