Which RIP stability feature prevents a router from having incorrect route updates when its link fails?

The feature that prevents a router from having incorrect route updates when its link fails is Split Horizon. This technique enhances the stability of the Routing Information Protocol (RIP) by preventing a router from advertising a route back out the interface from which it was learned.

When a router receives an update about a network, the split horizon rule dictates that it cannot send that same information back to the router from which it got it. This is particularly useful in scenarios where a link fails because it helps to avoid loop conditions that could arise from incorrect routing updates being sent out immediately after a failure.

For example, if Router A learns about a route to a certain network from Router B, Split Horizon prevents Router A from sending that route back to Router B, even if it receives an update saying that the route is unreachable (due to a failure). This minimizes the risk of routing loops or inconsistent routing information circulating between routers, thereby enhancing network stability.

In contrast, other options like Poison Reverse, Holddown Timers, and Route Summarization serve different purposes. Poison Reverse allows routers to inform neighbors about the failure of a route, while Holddown Timers temporarily disable route updates for routes being monitored for instability. Route Summarization, on the other hand