What is the purpose of the passive-interface command?

ccna2-answer
ccna2-exam
dynamic-routing

#1

What is the purpose of the passive-interface command?

  1. allows a routing protocol to forward updates out an interface that is missing its IP address
  2. allows a router to send routing updates on an interface but not receive updates via that interface
  3. allows an interface to remain up without receiving keepalives
  4. allows interfaces to share IP addresses
  5. allows a router to receive routing updates on an interface but not send updates via that interface*