You are the administrator for your company's network. The network is configured as shown in the exhibit. 

You want to install Windows 2000 Professional on 20 new PXE-compliant computers on the marketing segment of your network. The new computers do not have operating systems installed. You create a RIS image. You load the image onto the RIS server. You then start the new computers. You find that the new computers cannot connect to the RIS server. You verify that the new computers cannot connect to the RIS server. You verify that the existing client computers in the network can connect to the network servers, including the RIS server. You want to enable the new computers to connect to the RIS server.  
What should you do? （）

As the administrator of your Windows 2000 corporate network you need to install Windows 2000 Professional on 88 computers, and you would like to do it with the least amount of administrative effort. 
You have 38 PXE-Compliant computers and 50 NON PXE-Compliant computers ready to go. You confirm that all 88 computers and their hardware are included on the current Windows 2000 hardware compatibility list (HCL).You create an RIS image and load it onto a Windows 2000 RIS Server. You then start the 88 computers. You find that the 38 PXE-Compliant computers connect fine to the RIS server, however the 50 NON PXE-Compliant computers cannot connect to the RIS server. 
What should you do to resolve this problem?（）