单项选择题 You have an Exchange Server 2010 server named Server1.Server1 hosts a mailbox database named DB1 that contains 25 user mailboxes.You create a new public folder database named PUB2.You need to configure PUB2 as the default public folder database for each mailbox on DB1. Which properties should you modify？（）

单项选择题 Your company has a main office and a branch office.The branch office administrators are the only members of a custom management role group.The role group is configured to allow members to manage recipients. You notice that the branch office administrators can manage recipients in both offices.You need to ensure that the branch office administrators can manage recipients in the branch office only. What should you do？（）

单项选择题 You have an Exchange Server 2010 organization that contains 20 Mailbox servers. You plan to create 10 mailbox databases on each Mailbox server.You need to create a naming convention for all mailbox databases. What should you include in your naming convention？（）