What is the purpose of using the ip ospf message-digest-key key md5 password command and the area area-id authentication message-digest command on a router?
- to encrypt OSPF routing updates
- to enable OSPF MD5 authentication on a per-interface basis
- to configure OSPF MD5 authentication globally on the router
- to facilitate the establishment of neighbor adjacencies
Explanation: To configure OSPF MD5 authentication globally, the ip ospf message-digest-key key md5 password interface configuration command and the area area-id authentication message-digest router configuration command are issued. To configure OSPF MD5 authentication per interface, the ip ospf message-digest-key key md5 password interface configuration command and the ip ospf authentication message-digest interface configuration command are issued. Authentication does not encrypt OSPF routing updates. The requirements to establish OSPF router neighbor adjacencies are separate from authentication.
Exam with this question: Network Security 1.0 Practice Final Exam Answers
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