Fabrikam, Ltd. has an Exchange Server organization that contains two servers. The servers are configured as
shown in the following table.

Recently, the internal and external namespaces named mail.fabrikam.com and autodiscover.fabrikam.com
were changed to point to EX2.
You configure all of the users on EX2 to access their mailbox by using Microsoft Outlook from the Internet.
You enable Outlook Anywhere on EX1.
You need to ensure that users who have mailboxes on EX1 can connect to their mailbox from the Internet.
What should you do on EX1?

A.
Set the ExternalHostName value to NULL.

B.
Set the ExternalClientAuthenticationMethod value to Basic and NTLM.

C.
Set the IISAuthenticationMethods value to Basic and NTLM.

D.
Set the InternalHostName value to NULL

Explanation:
Enable and configure Outlook Anywhere
To allow your Exchange 2013 Client Access server to proxy connections to your Exchange 2007 and
Exchange 2010 servers, you must enable and configure Outlook Anywhere on all of the Exchange 2007 and
Exchange 2010 servers in your organization. If some Exchange 2007 or Exchange 2010 servers in your
organization are already configured to use Outlook Anywhere, their configuration must also be updated to
support Exchange 2013.
When you use the steps below to configure Outlook Anywhere, the following configuration is set on each
Exchange 2007 and Exchange 2010 server:
The Outlook Anywhere external URL is set to the external hostname of the Exchange 2013 server. Client
authentication, which is used to allow clients like Outlook 2013 to authenticate with Exchange, is set to Basic.
Internet Information Services (IIS) authentication, which is used to allow Exchange servers to communicate, set
to NTLM and Basic.
The Outlook Anywhere external URL is set to the external hostname of the Exchange 2013 server.
Client authentication, which is used to allow clients like Outlook 2013 to authenticate with Exchange, is set to
Basic.
Internet Information Services (IIS) authentication, which is used to allow Exchange servers to communicate, set
to NTLM and Basic.
Get-ExchangeServer | Where {($_.AdminDisplayVersion -Like “Version 14*”) -And ($_.ServerRole –Like
“*ClientAccess*”)} | Get-ClientAccessServer | Where {$_.OutlookAnywhereEnabled -Eq $False} | EnableOutlookAnywhere -ClientAuthenticationMethod Basic -SSLOffloading $False –
ExternalHostName $Exchange2013HostName -IISAuthenticationMethods NTLM, Basic