Which statements about split horizon in IP routing are correct? (Choose two.)

Split horizon is a fundamental routing loop prevention mechanism. It works by preventing a router from advertising a route back out the same interface through which it learned that route. This stops a route from being re-advertised into the network segment where it originated, effectively breaking simple routing loops. It is particularly relevant for distance-vector routing protocols like RIP and IGRP. Incorrect options: Split horizon is not used to filter customer routes in an ISP network; that's typically done with access control lists (ACLs) or routing policies. Split horizon can generally be disabled on interfaces, including WAN interfaces, if specific network designs require it, though it's usually not recommended due to the risk of routing loops. Split horizon does apply to EIGRP networks, where it's a key component of its loop-free operation, often in conjunction with other mechanisms like DUAL.