You want to install Windows 2000 Professional on 20 new PXE compliant computers, which do not have operating systems installed. You create a RIS image and load the image onto the RIS server and then start the new computers. You find that the new computers cannot connect to the RIS server. You verify that existing client computers on the network can connect to network servers.   
What should you do?
 

You want to install Windows 2000 Professional on 45 new computers on your company’s network. You first install Windows 2000 Professional on one of the new computers. You log on to the computer by using the local administrator account. 
You install Microsoft Office 97, a virus scanner, and other company-standard applications. You then create a RIS image of the computer you configured. You want to configure the RIS image so that the standard applications will be accessible to the user when the user first logs on to the network. 
What should you do?（）

You are the administrator of your company’s network. You network has five Windows 2000 server computers and 75 Windows 2000 Professional computers. The Windows 2000 Professional computers were installed by using a RIS image on one of the Windows 2000 Server computers. 
You need to upgrade several applications on the Windows 2000 Professional computers. The applications do not have built-in support for scripted installations. You want to accomplish the following goals:   An unattended installation of the upgraded applications will be performed on the Windows 20000 Professional computers.
Existing user environments will be maintained on the Windows 2000 Professional computers. The network name of each Windows 2000 Professional computer will be changed to match its asset tag.
The RIS image and the upgraded applications will be enabled as they are added to the network.
You take the following actions:
Install the RIS image on a Windows 20000 Professional computer named Computer1. Install the upgraded applications on Computers1.
Change the network name of Computer1 to %DMI-SERIAL_NUM%.  Run RIPrep.exe on Computer1 to load the RIS image on to the RIS server. Start all of the Windows 2000 Professional computers, and then load the RIS image from the RIS server. 
Which result or results do these actions produce?()

You are the administrator of a small network supporting Windows NT 4.0 computers. You configure a setup script to automatically upgrade Windows NT Workstation 4.0 computers to Windows 2000 Professional. When you attempt to test the process on a single computer， you receive this error message： 
"The specified Setup script file （path：\unattend.txt） is inaccessible or invalid.  Contact your system administrator."   
Which action will most likely resolve this error？ （）