Your network contains an Active Directory domain. The domain contains one site.
You have an Exchange Server 2010 Service Pack 1 (SP1) organization that contains two
Client Access servers, two Hub Transport servers, and three Mailbox servers. The mailbox
servers are members of a database availability group (DAG) named DAG1.
You have a mailbox database named DB1.
You configure two mailbox database copies of DB1.
You verify that both mailbox database copies have a status of Healthy.
You need to ensure that an administrator is notified when the health status of a mailbox
database copy changes.
What should you run from the Exchange Management Shell?

A.
Test-ReplicationHealth

B.
Get-MailboxDatabase

C.
Test-MapiConnectivity

D.
Test-MailFlow

E.
Test-Senderld

F.
Test-SystemHealth

G.
Test-OutlookWebServices

H.
Test-AvailabilityService

I.
Get-SenderIdConfig

J.
Test-WebServicesConnectivity
K.
Test-SmtpConnectivity
L.
Retry-Queue
M.
Get-MailboxDataboxCopyStatus
N.
checkdatabaseredundancy.ps1

Explanation:
http://gallery.technet.microsoft.com/scriptcenter/8833b4db-8016-47e5-b747-951d28faafe7