You have an Exchange Server 2010 organization. In the AD exists Site 1 and Site 2, with
two CAS Servers each one.
All Mailbox databases are replicated on Mailbox Servers in both sites. All users connect to
their mailboxes using Microsoft Outlook 2003.
The array named array.contoso.com is created in Site 1. Configure all users to connect to
array1.contoso.com.
You verify that all users can connect successfully to array.contoso.com. One month later, all
servers in Site 1 fail.
You need to ensure that users can connect to CAS in Site 2 by using array1.contoso.com.
What should you do?

A.
Create a CAS array named array2.contoso.com in site 2. Rename array2.contoso.com to
array1.contoso.com

B.
Create a CAS array named array2.contoso.com in site 1. Remove all CAS from
array1.contoso.com

C.
Modify A record for array1.contoso.com to point to the IP address of a CAS Server in site
2

D.
Modify A record for autodiscover.contoso.com to point to the IP address of a CAS Server
in site 2

Explanation: