Which command is required to advertise a network in a particular routing protocol before redistributing into BGP?

To advertise a network in a particular routing protocol before redistributing it into BGP, the command that is required is the one that specifies the network to be included in the routing updates. This is achieved using the command that follows the specific syntax of the routing protocol, which includes the network address and associated subnet mask or wildcard mask.

In this context, the command that is correct integrates the network address and its respective mask, allowing that specific network to be included in the routing updates that are advertised to other routers. This is fundamental for ensuring that the desired networks become part of the routing table and can be redistributed into BGP effectively.

Other commands listed may play roles in the configuration process but do not directly serve the purpose of advertising a network for redistribution into BGP. For example, entering "router bgp ASN" initializes the BGP process for configuration, while "config t" enables global configuration mode, and "redistribute routing protocol" facilitates the redistribution of learned routes, but without first advertising the relevant networks, the redistribution would not have the necessary networks to work with. The successful advertisement of a network is crucial for proper BGP updates and routing functionality.