Final answer:
When configuring RIP on an interface level, the specified version (either RIPv1 or RIPv2) will be enabled for that interface. There are no standard versions such as RIPv3 or RIPv4. The interface configuration overrides any global RIP settings on the router.
Step-by-step explanation:
When configuring RIP (Routing Information Protocol) on an interface level, you effectively configure the version of RIP that will operate on the specified interface. RIP version 1 (RIPv1) and RIP version 2 (RIPv2) are the two versions primarily used and supported. RIPv3 and RIPv4, as listed in the options, do not exist as standard versions of RIP. When you configure either RIPv1 or RIPv2 on an interface, that becomes the operating version for that interface, independent of the default or global RIP configuration on the router.
To clarify with an example, if RIPv2 is configured on an interface, it enables the transmission of RIPv2 messages on that interface, along with RIPv2's features such as support for subnet masks (Variable Length Subnet Masking, VLSM), multicast updates, and authentication. Even if the global configuration is set to RIPv1, the interface-specific configuration overrides the global setting for that interface.