I have a Win2K3 AD design transcender question in which you have two LANs connected by a WAN link. A requirement of the DHCP implementation is to provide redundancy in case of the failure of one server. Two possibile answers are: b) - Install a DHCP server in each office. On each server configure a single scope and an exclusion range. d) - Install a DHCP server in each office. On each server configure two scopes, for each scope configure an exclusion range. The recommended answer is (d). I do not understand this answer. Let's say that I have two subnets: LAN1 - 10.0.15.0/24 LAN2 - 10.0.16.0/24 connected by a WAN link. The DHCP server on LAN1 is set up to service DHCP requests from LAN2 as well as LAN1. Fine. But how will it know not to assign LAN2 IP addresses to local computers. If it does that the local computer will belong to the wrong subnet and will not be able to access any local resources? TIA eddiec :-)