You recently connected two Catalyst 2960 access-layer switches, SwitchA and SwitchB, and an external router to your network. Now you need to use the external router for a router-on-a-stick configuration for inter-VLAN routing between VLANs 2 and 4. Both VLANs are already configured on SwitchA and SwitchB and have interfaces assigned to the respective VLANs. Complete the following tasks: Configure GigabitEthernet 0/1 on SwitchA and GigabitEthernet 0/1 on SwitchB as trunk ports. Configure FastEthernet 0/24 on SwitchA as a trunk port. Configure the following on the external router: Enable FastEthernet 0/1 For VLAN 2, configure the following subinterface details: Subinterface: FastEthernet 0/1.2 Encapsulation: 802.1q IP address and subnet mask: 192.168.2.1 255.255.255.0 For VLAN 4, configure the following subinterface details: Subinterface: FastEthernet 0/1.4 Encapsulation: 802.1q IP address and subnet mask: 192.168.4.1 255.255.255.0 Save your changes to the startup-config file on each device.