Chad is the administrator of a Windows Server 2003 computer named Server 2. Server 2 is a domain member server that has the DNS service installed. It is configured with two network interfaces named NIC1 and NIC2. Routing is not enabled between the two network interfaces. NIC1 and NIC2 are configured as shown in the image.
Resources on the Engineering network segment use the same fully qualified domain names (FQDNs) as resources in the Sales network. The TCP/IP properties on client computers in the Engineering environment are controlled by individual developers.
Using the DNS console on S1, what should Chad do to ensure that the users in the Engineering environment cannot resolve FQDNs from the Sales network?