A network technician is troubleshooting connectivity issues on a network. A specific subnet cannot be reached from various hosts on the network. The technician suspects an issue with the configuration of the routers. Which action should the technician take FIRST to address this problem?
Verify that the subnet is correctly listed in the router's routing table.
Reconfigure network settings on all hosts in the affected subnet.
Enable a dynamic routing protocol on all routers within the network.
Check all cables between the affected hosts and the non-reachable subnet.