You work as the enterprise exchange administrator at Xxx .The Xxx network consists of a domain named xxx . The Xxx network has a mail server named XXX-EX01 that has Windows Server 2008 installed.You receive instruction from Xxx to deploy Exchange Server 2010 on XXX-EX01 to support the following roles： Hub Transport role Client Access role Mailbox role Unified Messaging （UM） server role What action must you take（）