单项选择题
A.a Discovery Management role group
B.a legal hold
C.administrator audit logging
D.Mailbox journaling
单项选择题 You have an Exchange Server 2010 organization that contains Windows Mobile 5.0 devices. Your company plans to replace all mobile devices with Windows Mobile 6.5 devices. You need to identify which users accessed their mailboxes by using Windows Mobile 5.0 devices in thepast month. What should you do？（）
单项选择题 You have an Exchange Server 2010 organization. You plan to delegate Exchange administrative rights to some users in the organization. You need to recommend a solution that tracks all changes made to the Exchange organization. What should you include in the solution？（）
单项选择题 You have an Exchange Server 2010 organization that contains five Hub Transport servers， five Mailboxservers and one Edge Transport server. You need to provide a solution to ensure that users can prevent legitimate inbound e-mail messages frombeing classified as spam. What should you do？（）