You work as an IT professional in an international corporation named Wiikigo. In the company, your job is to configure Microsoft Internet Security and Acceleration Server 2006. And you are experienced in performing and managing networks and operational systems. In addition, you are skilled at deploying ISA Server 2006, configuring firewall settings, and optimizing performance of the ISA Server 2006 cache. There is a head office and branch office in the company. There is a server named ISA01 in the head office. ISA Server 2004 is run by ISA01. There is a server named ISA02 in the branch office. ISA Server 2004 is run by ISA02. 5,000 desktop client computers are contained in the network. The desktop client computers have installed Firewall Client for ISA Server 2000. ISA01 is configured to only permit encrypted Firewall client connections after you have ISA01 upgraded to ISA Server 2006. You receive reports from users in the head office saying that they cannot use Microsoft Office Outlook to access external e-mail services. Since you are the technical support, you have to solve this problem for them. You must make sure that users in the head office are able to use Outlook to access external e-mail servers. So what action should you perform?

A.
The Firewall Client settings should be configured to use an automatic configuration script on ISA01.

B.
The Firewall Client settings should be configured to have the Allow non-encrypted Firewall client connections option enabled on ISA02.

C.
For ISA Server 2006, Firewall Client should be installed on all computers in the main office.

D.
ISA Server 2006 should be removed and ISA Server 2004 should be installed on ISA01.
Configure ISA01 to only allow encrypted Firewall client connections.