Because of security concerns, a network administrator wants to set up authentication between two routers. Which of the following commands will configure Router_A to trust Router_B with a clear text password of apollo?
Router_A(config-if)# ospf authentication-key apollo
Router_A(config-if)# ip authentication-key apollo
Router_A(config-if)# ip ospf authentication apollo
Router_A(config-if)# ip ospf authentication-key apollo*
Router_A(config-if)# ospf authentication-key apollo
Router_A(config-if)# ip authentication-key apollo
Router_A(config-if)# ip ospf authentication apollo
Router_A(config-if)# ip ospf authentication-key apollo*