Cisco 100-105 Exam

An administrator issues the show ip interface s0/0 command and the output displays that interface Serial0/0 is up, line protocol is up. What does “line protocol is up” specifically indicate about the interface?

  • A. The cable is attached properly.
  • B. CDP has discovered the connected device.
  • C. Keepalives are being received on the interface.
  • D. A carrier detect signal has been received from the connected device.
  • E. IP is correctly configured on the interface.
Answer: Option C.

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