A corporate environment includes deployments of Exchange Server 2010 in North America and
Europe. All client computers connect to an Active Directory Domain Services (AD DS) domain named
contoso.com. The topology of the Exchange organization is shown in the following table.
Users access Outlook Web App (OWA) by browsing to https://owa.contoso.com/owa. The
configuration of the OWA virtual directory URLs on each Client Access server is shown in the
following table.
Users with mailboxes hosted on server MB02 cannot remotely connect to their mailboxes by using
OWA . You need to recommend a solution that allows the users to remotely connect to their
mailboxes. What should you recommend?

A.
Set the ExternalUrl property on the CAHT01 OWA virtual directory to
https://caht02.contoso.com/owa.

B.
Set the InternalUrl property on the CAHT01 OWA virtual directory to
https://owa.contoso.com/owa.

C.
Set the ExternalUrl property on the CAHT02 OWA virtual directory to $null.

D.
Set the InternalUrl property on the CAHT02 OWA virtual directory to $null.

Explanation: