Refer to the exhibit.

Which statement is correct?

A.
OSPF peers are using Type 1 authentication

B.
OSPF peers are using Type 2 authentication

C.
Authentication is used, but there is a password mismatch

D.
The OSPF peer IP address is 172.16.10.36

Explanation:
These are the three different types of authentication supported by OSPF.
Null Authentication—This is also called Type 0 and it means no authentication information is
included in the packet header. It is the default.
Plain Text Authentication—This is also called Type 1 and it uses simple clear-text passwords.
MD5 Authentication—This is also called Type 2 and it uses MD5 cryptographic passwords.
Authentication does not need to be set. However, if it is set, all peer routers on the same segment
must have the same password and authentication method. The examples in this document
demonstrate configurations for both plain text and MD5 authentication.

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