Which command would you use to view the active routing table on a Junos device?

To view the active routing table on a Junos device, the command used is "show route." This command displays the routing information currently held in the device's routing table, including details such as destination networks, next-hop addresses, and the route preferences.

In the Junos operating system, commands are often concise and specific to the context of the system. "show route" is the standardized command to access routing information, reflecting the streamlined nature of Junos compared to other network operating systems. This command provides a comprehensive overview of all routes the device knows about, their statuses, and any associated administrative distances or route types (like static or dynamic routing).

Other choices presented are not valid in Junos. For instance, "show ip route" is commonly used in Cisco IOS to view the routing table but is not applicable in the Junos context. Similarly, "get route" and "view route" are not recognized commands in the Junos CLI for displaying the routing table. Only "show route" correctly provides the necessary routing table information in a Junos device environment.