____ is an open standards, link-state routing protocol that supports classless routing, variable-length subnet masks, and authentication.
A) OSPF
B) EIGRP
C) RIPv1
D) IGRP

Question

Quizplus · Accepted Answer

OSPF is the only option that supports classless routing, variable-length subnet masks, and authentication. EIGRP supports classless routing and variable-length subnet masks, but does not support authentication. RIPv1 only supports classful routing and does not support variable-length subnet masks or authentication. IGRP also only supports classful routing and does not support variable-length subnet masks or authentication.

____ Is an Open Standards, Link-State Routing Protocol That Supports