What is the default administrative distance of OSPF?

A.
90

B.
100

C.
110

D.
120

Explanation:
Administrative distance is the feature that routers use in order to select the best path when
there are two or more different routes to the same destination from two different routing
protocols. Administrative distance defines the reliability of a routing protocol. Each routing
protocol is prioritized in order of most to least reliable (believable) with the help of an
administrative distance value.
Default Distance Value Table
This table lists the administrative distance default values of the protocols that Cisco supports: