Which action does split horizon use to reduce incorrect routing information?
- It limits the number of hops a packet can traverse through the network before the packet should be discarded.
- It marks routes as unreachable in routing updates sent to other routers.
- It prevents routers from accepting higher cost routes to networks previously marked as inaccessible before the timer expires.
- It prevents routers from advertising a network through the interface from which the update came.
Explanation: Advertising a route back to the originating router is known as reverse route. Reverse routes waste network resources, causing routing loops. Split horizon prevents the advertisement of reverse routes.