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（）

A.Create a Retention Policy.
B.Create a managed folder mailbox policy.
C.Modify the properties of the mailbox database.
D.Modify the properties of the Mailbox server object.

A.From the properties of DB1， configure options on the Limits tab.
B.From the properties of each mailbox， modify the storage quotas.
C.From the properties of Server1， configure options on the Messaging Records Management tab.
D.From Managed Default Folders， modify the properties of the Entire Mailbox managed folder.

A.Restart the Microsoft Exchange Mail Submission service
B.Run the ESEUTIL utility on the Exchange databases
C.Exclude *.edb and *.log files from the virus scanner
D.Restart the Microsoft Exchange Transport service
E.Restart the Microsoft Exchange Information Store service