Q4
Single choice
You need to configure OSPF on a DNOS 6 switch and have entered the following:
Switch-1(config)# ip routing Switch-1(config)# interface vlan 20 Switch-1(config-if-vlan20)# ip address 10.1.20.1 255.255.255.0
Switch-1(config)# router ospf Switch-1(config-router)# router-id 10.1.1.1 Based on the information referenced above, what is missing from the configuration?