Which Junos operational mode command displays all BGP routes sent to the 172.16.1.1 peer?

The command that accurately retrieves and displays all BGP routes sent to a specific peer, in this case, 172.16.1.1, is correctly identified as "show route advertising-protocol bgp 172.16.1.1."

This command is part of the operational mode in Junos, where "show route advertising-protocol" specifically focuses on showing the routes that have been advertised to a BGP peer. The term "advertising-protocol" is key here, as it designates the action of sending routes to a BGP neighbor.

In contrast, other commands might pertain to different aspects of route management or display routes in different contexts. For instance, while the terms "send-routes" and "advertised-routes" may sound relevant, they do not directly pertain to the operational mode context that focuses on active route advertisement to peers. Therefore, understanding the specific functional terminology used in the command structure is essential for achieving the desired outcomes in BGP route management.