Your network contains a perimeter network and an internal network. You are designing an Exchange
organization for a company named Contoso, Ltd. All servers in the organization will have Exchange
Server 2010 Service Pack 1 (SP1) installed. Contoso plans to use a third-party message hygiene
solution on the Internet to relay all inbound SMTP e-mail to the Exchange servers. You need to
recommend an inbound SMTP e-mail deployment solution for the Exchange organization. The
solution must ensure that all Exchange servers can be managed by using Group Policies. Which of
the following solutions is the best recommendation? (More than one answer choice may achieve the
goal. Select the BEST answer.)

A.
Deploy Edge Transport servers on the perimeter network
Deploy Hub Transport servers on the internal network
Join the Edge Transport servers to a separate Active Directory forest on the perimeter network
Join the Hub Transport servers to the internal Active Directory forest

B.
Deploy Edge Transport servers and Hub Transport servers on the internal network
Join the Edge Transport servers to a separate Active Directory forest on the perimeter network
Join the Hub Transport servers to the internal Active Directory forest

C.
Deploy a reverse proxy server on the perimeter network
Deploy Edge Transport servers and Hub Transport servers on the internal network
Join the Hub Transport servers and the Edge Transport servers to the internal Active Directory forest.

D.
Deploy a reverse proxy server, Edge Transport servers, and Hub Transport servers on the
perimeter network
Join the Edge Transport servers to a separate Active Directory forest on the perimeter network
Join the Hub Transport servers to the internal Active Directory forest.