What is the best approach to achieve the goal?

A corporate environment includes client computers running Windows 7 Enterprise. Remote access to the corporate network utilizes Network Access Protection (NAP) and

DirectAccess.

You need to recommend an approach for providing support technicians with the ability to easily determine the cause of client-side remote access issues.

What is the best approach to achieve the goal? (More than one answer choice may achieve the goal. Select the BEST answer.)

A.
Run network tracing for DirectAccess on client computers.

B.
Grant the support technicians access to the DirectAccess Management Console.

C.
Deploy the DirectAccess Connectivity Assistant (DCA) to client computers.

D.
Run Windows Network Diagnostics on client computers.

Explanation:
Reference:

http://technet.microsoft.com/en-us/library/dd391869(v=WS.10).aspx#bkmk_NDF