Cisco Certified Network Associate (200-301 CCNA) – Question206

In a CDP environment, what happens when the CDP interface on an adjacent device is configured without an IP address?

A. CDP becomes inoperable on that neighbor
B. CDP uses the IP address of another interface for that neighbor
C. CDP operates normally, but it cannot provide IP address information for that neighbor
D. CDP operates normally, but it cannot provide any information for that neighbor

Correct Answer: C

Explanation:

Explanation:
Although CDP is a Layer 2 protocol but we can check the neighbor IP address with the “show cdp neighbor detail” command. If the neighbor does not has an IP address then CDP still operates without any problem. But the IP address of that neighbor is not provided.