What are two reasons to enable OSPF routing protocol authentication on a network? (Choose two.)​

What are two reasons to enable OSPF routing protocol authentication on a network? (Choose two.)​

• to ensure more efficient routing
• to ensure faster network convergence
• to prevent data traffic from being redirected and then discarded
• to prevent redirection of data traffic to an insecure link
• to provide data security through encryption
  

  Answers Explanation & Hints: The reason to configure OSPF authentication is to mitigate against routing protocol attacks like redirection of data traffic to an insecure link, and redirection of data traffic to discard it. OSPF authentication does not provide faster network convergence, more efficient routing, or encryption of data traffic.