You are the network administrator for a small office.
The office has a single-server domain that runs Microsoft Windows Small Business Server 2003, Premium Edition with Microsoft Internet Security and Acceleration (ISA) Server 2000 enabled. There are 25 Windows 2000 Professional desktop computers

Twenty of the desktop computers and the server do not have current Windows critical and security updates installed. The other five desktop computers run antivirus programs, all of which have expired definitions. The ISA Firewall Client is not enabled on any of the desktop computers. The latest updates for ISA Server are not installed on the server

You need to implement a solution that eliminates the two biggest security risks to the network
What should you do? (Each correct answer presents part of the solution. Choose two.)

A.
Update Windows critical and security updates on all the desktop computers and on the server.

B.
Install and update the antivirus program definitions on all the desktop computers and on the server.

C.
Enable the ISA Firewall Client on the desktop computers.

D.
Install the latest updates for ISA Server 2000.