Which command correctly starts routing process in cisco router?

To start the routing process on a Cisco router, you typically enter the command router [routing_protocol] in global configuration mode, where [routing_protocol] could be protocols like rip, ospf, or eigrp. For example, to start the OSPF routing process, you would use the command router ospf [process_id], where [process_id] is a unique identifier for the OSPF process. This command enables the routing protocol and allows for configuration of related settings.