Nokia Network Routing Specialist II (NRS II) 4A0-112 Question # 4 Topic 1 Discussion
4A0-112 Exam Topic 1 Question 4 Discussion:
Question #: 4
Topic #: 1
Two IS-IS routers are exchanging Hello packets. One is configured to use authentication and the other is not. Which of the following statements is TRUE?
A.
An adjacency will be established with authentication using the default parameters defined for IS-IS routers.
B.
The two routers will negotiate the authentication parameters and the establish an adjacency.
C.
An adjacency will be established without authentication.
IS-IS routers must have matching authentication settings to establish an adjacency. If one router is configured with authentication and the other is not, the routers will not be able to establish an adjacency because their authentication parameters do not match.
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