An organization plans to deploy Exchange Server 2010 in multiple Active Directory Domain Services (AD DS) sites. The locations of the Client Access servers are as shown in the following table.
Server name AD DS site Internet facing
CAS01 Chicago Yes
CAS02 New York No
Users will access Autodiscover, Outlook Web App (OWA), Exchange ActiveSync, and Outlook Anywhere only over the Internet through the URL mail.contoso.com. Users must be able to connect to all of the services via an SSL connection without receiving errors or warning messages. You need to recommend an SSL certificate configuration. In addition, you need to minimize the number of certificates purchased.
Which two actions should you recommend? (Each correct answer presents part of the solution. Choose two.)
A.
Use the existing self-signed certificate on CAS01.
B.
Use the existing self-signed certificate on CAS02.
C.
Purchase a third-party SSL certificate for CAS01 containing the autodiscover.contoso.com and mail.contoso.com FQDNs.
D.
Purchase a third-party SSL certificate for CAS02 containing the autodiscover.contoso.com and mail.contoso.com FQDNs.