正确答案:
解析:
Place 1: No server is needed.
Existing clients are able to use RIS. There is therefore no need to install any services on the subnet which includes the Domain Controller, RIS server and DNS server.
Place 2: DHCP Relay Agent.
The router is not RFC 1542 compliant. It will not relay DHCP traffic. The new clients will not receive IP configurations and they are therefore unable to use the RIS service. We must therefore install a DHCP relay agent on the new subnet. The DHCP relay agent will enable the new clients to receive IP configurations and use RIS.