Exhibit:Referring to the exhibit, which routing configuration is required for these two users to access...

The network topology illustrates two distinct IP subnets, 10.1.1.0/24 and 10.1.2.0/24 , separated by a Layer 3 router. For hosts on the first subnet to communicate with the server on the second subnet, an intermediary device must perform inter-subnet routing. The router acts as the exit point for each local segment, utilizing its interfaces assigned with the .254 host address as the logical path to external networks.

The fundamental requirement for this communication is the configuration of a default gateway on all end-nodes. When the users (on 10.1.1.0/24 ) attempt to send data to the server (on 10.1.2.0/24 ), their local TCP/IP stack recognizes the destination is not on the local wire. Without a defined default gateway, the hosts would simply drop the traffic as unroutable. By setting the default gateway to 10.1.1.254 for users and 10.1.2.254 for the server, the hosts are instructed to forward all off-net traffic to the router. The router then consults its routing table—which contains these directly connected routes—and forwards the packets to the appropriate egress interface. While VLAN tagging or routing protocols could exist in more complex environments, the primary necessity for basic reachability between these two specific segments is a correctly configured gateway on the terminal devices. Reference: Networking Fundamentals, IP Routing Basics, Default Gateway Configuration.

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