Which command shows the details of the prefix advertised by a neighbor?

The command that shows the details of the prefix advertised by a neighbor is indeed the command to retrieve specific information about BGP neighbors and their advertised prefixes. This command provides valuable insights into the routing information shared between BGP peers.

When you use the command that specifies the neighbor's IP address along with the "advertise" argument, you are effectively asking the router to display the prefixes that this particular neighbor has advertised to it. This is crucial for network operators who need to understand which routes are being received from their BGP peers and to diagnose routing issues.

The other options do not specifically target the advertised prefixes from a neighbor in such a direct manner. Instead, they may provide more general information or not include the necessary detail about specific prefixes, which makes the correct command the most effective choice for this inquiry.