Correct Answer: Upgrade all of the Windows NT Workstation 4.0 computers and Windows 98 computers to Windows 2000 Professional
Explanation:
To achieve optimum functionality of the client computers, you must upgrade all of them to Windows 2000. Upgrading some of them and/or installing the Directory Service Client will gain some functionality, but the question specifically states that "optimum functionality" is the required result.
Discussion & Comments