How do you enable RIP on all interfaces in a specified range?

To enable Routing Information Protocol (RIP) on all interfaces within a specified range, the command that needs to be used is "network ip-address". This command is executed in the router's configuration mode after entering RIP routing configuration mode. It allows the user to specify the network address that RIP should advertise, as well as enable RIP on all interfaces that fall within that address range.

When you issue the "network ip-address" command, you're essentially instructing the router to start sending and receiving RIP updates on any interface that matches the specified network address. This is a fundamental aspect of RIP configuration, as it allows efficient management of network routing by allowing routers to share routing information dynamically with neighboring routers.

The other choices do not represent valid syntax or commands in the context of configuring RIP. For instance, “enable network ip-address” and “ip network enable” do not relate to the proper command structure for initiating RIP on a given network. Similarly, “interface network ip-address” does not initiate RIP correctly, as this could imply configurations specific to an interface rather than enabling RIP across a network range. Therefore, using "network ip-address" is the appropriate choice for enabling RIP on all relevant interfaces.