You are the Exchange administrator of the Xxx Corporation’s Exchange 2010 organization.You need to retrieve all messages from Ann’s mailbox that have the word "classified" in the message body and the subject of "New Project." The message may be either in the Calendar or Inbox folders. What should you do？（）

You are the Exchange administrator of the Xxx Corporation’s Exchange 2010 organization.You are 
concerned about the total size of items that are stored in a public folder namedExpenseReport.Click the Exhibit （s） button to view the public folder configuration. Which of the following techniques should you use to determine the size of items and the attachments in the public folder？（）

You are the Exchange administrator for the Xxx Corporation’s Exchange 2010 organization.People from outside your organization make inquiries to the Xxx’s Tax department.You create a Tax distribution group that contains all members of the Tax department so people can send questions to the members of the department.You have a number of additional requirements： 
（1）Only authorized questions should be sent to the Tax department.You must determine what an authorized question is. 
（2）All users in the Tax department， except the department supervisor named George， must receive authorized questions. 
（3）George must be able to send feedback to the Tax department. 
What should you do？（）