Question

What loop-prevention mechanism will prevent a route from being advertised out an interface from which it was learned?

a) Split horizon
b) Hold-down timer
c) Poison reverse
d) Route summarization

Answer 1

The loop-prevention mechanism that stops a route from being advertised out of the interface it was learned from is split horizon.

Step-by-step explanation:

The loop-prevention mechanism that will prevent a route from being advertised out an interface from which it was learned is a) Split horizon. Split horizon is a technique used in networking to prevent routing loops. It operates on the principle that it is never useful to send information about a route back in the direction from which the original packet came. This mechanism helps to minimize the possibility of forming routing loops.