单项选择题

You have an Exchange Server 2010 organization that contains a single Mailbox server.The Mailbox server contains two mailbox databases named DB1 and DB2.You need to restore a backup of DB1.Users must be able to connect to their mailboxes on DB1 during the restore process.What should you create first？（）

A.a database availability group （DAG）
B.a Client Access server array
C.a Recovery Mailbox database
D.a recovery storage group

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单项选择题

Your network contains an Exchange Server 2010 Mailbox server.The server has one mailbox database.A user named User1 reports that he has multiple corrupted e-mail messages in his mailbox.You need to recover User1¯s -mail messages.The solution must not delete any other e-mail messages in the mailbox database.What should you do？（）

A.Create a new Mailbox Recovery Database， restore a backup of the database file， and then run the Export-Mailbox cmdlet.
B.Create a new Mailbox Recovery Database， restore a backup of the database file， and then run the Restore-Mailbox cmdlet.
C.Create a database availability group （DAG）， restore a backup of the mailbox database file， and then run the Restore-Mailbox cmdlet.
D.Create a database availability group （DAG）， restore a backup of the mailbox database file， and then run the Export-Mailbox cmdlet.

单项选择题

You have an Exchange Server 2010 organization.The organization contains two Mailbox servers named Server1 and Server2.Both servers are members of a database availability group （DAG） named DAG1.Server1 and Server2 have a copy of a mailbox database named DB1.You need to remove the copy of DB1 from Server1.What should you do？（）

A.From the Exchange Management Shell， run Clean-MailboxDatabase -Identity DB1.
B.From the Exchange Management Shell， run Remove-MailboxDatabase -Identity DB1\Server1.
C.From the Exchange Management Console （EMC）， right-click the database copy and select Remove.
D.From the Exchange Management Console （EMC）， right-click DAG1 and select Manage Database Availability Group Membership.Remove Server1 from the list and click Manage.

单项选择题

You have an Exchange Server 2010 organization.The organization contains two Mailbox servers named Server1 and Server2.Both servers are members of a database availability group （DAG）.A mailbox database named DB1 has a copy on Server1 and Server2.You need to ensure that Server2 waits three days before applying transaction log files from Server1 to DB1.What should you run？（）

A.Set-MailboxDatabaseCopy -Identity DB1\Server1 -ReplayLagTime 3.0：0：0
B.Set-MailboxDatabaseCopy -Identity DB1\Server1 -TruncationLagTime 3.0：0：0
C.Set-MailboxDatabaseCopy -Identity DB1\Server2 -ReplayLagTime 3.0：0：0
D.Set-MailboxDatabaseCopy -Identity DB1\Server2 -TruncationLagTime 3.0：0：0